toi-di-code-dao-ebook-demo.pdf

1

!"#$ "&' "()*+

,(-. -#( /0 12 34! 567*" 89:* ;<& !"=9 ,"> ?9@5 ,(-.

!"#$ "&' "()*+

,(-. -#( /0 12 34! 567*" 89:* ;<& !"=9 ,"> ?9@5 ,(-.

1

!"#$ "&' "()*+

,(-. -#( /0 12 34! 567*" 89:* ;<& !"=9 ,"> ?9@5 ,(-.

1

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

*") A&B5 ?=* 569 5"C,

2

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

3

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

3D9 +9E9 5"9F& "#$% &'& ()*+ ,-*# .$ /#), 012 0%$*3+  ,56 (.%3 78 ,9*3 6:* 8;< =< &%>? >)%@ 0m* 78 #
!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

rm2 .$ &1j* L'&# >12 *#V6 6DE 6F1*3 C$% E#b* J^ *]*3 ,K, ,$ ,s< .DE 6F-*# C<:* &b* &B@ r< Jt, CO< &#l*3 *#U*3 J^ *]*3 &i*3 =HI& =l& JT6 c19 J<*# *3#$2 &5, 6%$* &#U+ *5< >1*3 L'&# =HI& &#<9 .$, *#d >Y,+ =N& J#;*3 #K &i*3 *#\& *#H L'&# J^ 6#1D6 ,$ .)< FV6 >w 6w >$*3 Lj*3 LB6 C$ 6#]*3 6
5

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

$G, 3G, 5H$ 5I5 *J9 -&*+ !"K* L M /N *O*+ $P$ $P$ P|7 a}7 g0~•€Q P| rQ0 0‚ƒQv "0„Q 8…‚}Qv "0† "‡" ˆ‰Q 8…Š a‹/ 8…ŒQ0 P7€Q " "ŽQ 0„" r‰7 0„" 0e• g0Qvq 0e7 ue7 aŽ aƒQ Q0‘8 8…†Qv ’~‡ 8…ŒQ0 0„" a‹/ 8…ŒQ0 r‚“" vŒ ‘8 vŒ g07 0„" a‹/ 8…ŒQ0 ˆ”Qv 87Qv P7–8 87 r— 0„" 87Qv eQ0 Q0‚ 80 Q|† 0„" 80~‹8 8†‡Q r˜ a| "‡7 ’~‡7 vŒq Q0™Qv r7š~ 8…‚}Qv r‰7 0„" g0Qv k‰• ˆ‰Q 8‰† r›Qv aœ" 0„" 8‹/ P| a| P7–"  už" ‰Q0 "Ÿe 807 ’~Q 80œ" 8…‰Qv 0„" a‹/ 8…ŒQ0 "Ÿe ›8 u¡ 80eQ0 Q7€Q 07–Q Qe• 80e• a}7 ~¡Q Q7  v¢7 8ƒ7 Q0™Qv Qv‚}7 80£Q •€~ "Ÿe ¤7 a‹/ 8…ŒQ0 P7€Q 0„" QvQ Qv™ a‹/ 8…ŒQ0 Q|† ˆ£• v7} "‡"0 87/ "‹Q ¥ QvQ Qv™¦"Qv Qv0– ƒ7 8†/ "‡" §8…‚}Qv k‰• "†k¨ †Qa7Q "0† "‡" kPa†/… g© QªQv "ŽQ " "Ÿe ›8 «ˆ kPa†/… 8¬Qv ’~eQ Pš a‹/ 8…ŒQ0 žQv kQv k7 r›Qv ~Q QŠ† r‚}Qv 8Œ P7–" "†Q r‚}Qv /0‡8 8…7˜Q uœ Qv07–/ n"e…… /e80o "0† kPa†/… ®8 8¡7 "Ÿe Qv|Q0 "Qv Qv07–/ 78  /0ŽQ ¥ 8†/ ¥¯ ue7 aŽ | "‡" a‹/ 8…ŒQ0 P7€Q §Q†Q 8…Š¨ 0e• °" /0±7 r²Qv "†7 QvQ Qv™ a‹/ 8…ŒQ0 Q0‚ 8Q v7‡†

6

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

a‹/ 8…ŒQ0 P7€Q Q€Q r„" Q0™Qv u‡"0 vŒq uœ 80‹8 r°Qv a³Qv´ r7 g07 "° rŽ~ Qvµ7 "†k a| "‡"0 ¶ Qv~ Q0‘8 r˜ v7±7 ’~•8 P‘Q rš !"K* Q M /N *O*+ ,R*+ ,C*+ ·e ¸ Pš ev7a P| u"…~ 8¬Qv ’~eQ Pš ~7¦~· 8…†Qv Qv|Q0 a‹/ 8…ŒQ0 ›8 ˆ~88†Q 8… v7‡ ¹{{ 8…7–~ r  "‡7 Q0ŒQ g0‡" Pš v7e† k7–Q P| "0ž" QªQv a~‹Q Pš 8"0Q7"ea kˆ8  Q“ g7/ Q|•+ k~•€Q g7/ 8…‚ƒ" v7±7 80º"0 r»Q v7±Q Pš "7  "†Q87Q~†~u 7Q8v…e87†Q n8º"0 0“/ a7€Q 8"o uœ g0‡" ˆ7–8 v7™e «ˆ u78 P| «ˆ e//a7"e87†Q a~‹Q Pš "†Q8 "†k n/0†Qv "‡"0 g7 07–/o Q0‹/ Q ku7vQ /e88…Q n/0†Qv "‡"0 g7 07–/o u†a7k a| vŒ  ‡/ kQv "‡" Qv~•€Q a¼ u†a7k r˜ 8…¢ 80|Q0 a‹/ 8…ŒQ0 P7€Q "†k §"žQv¨ u7Qva …u/†Qu7ˆ7a78• /…7Q"7/a  Qv~•€Q a¼ r»Q 8…‡"0 Q07– †/Q¦"a†uk /…7Q"7/a  Qv~•€Q a¼ rQv¦¢ a7ug†P u~ˆu878~87†Q /…7Q"7/a  Qv~•€Q a¼ 80e• 80 a7ug†P 7Q8…½e" uv…ve87†Q /…7Q"7/a  Qv~•€Q a¼ /0£Q 8‡"0 7Q8…½e" k/QkQ"• 7QP…u7†Q /…7Q"7/a  Qv~•€Q a¼ r±† Qv‚“" k/QkQ"• k/QkQ"• 7Q¾"87†Q P| 7QP…u7†Q †½ "†Q8…†a ue7 aŽ 0e• v®/ "Ÿe a‹/ 8…ŒQ0 P7€Q ƒ7 P| Q0™Qv ‡Q0 g0 "Ÿe "‡" a‹/ 8…ŒQ0 P7€Q P© r‰7

7

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

ˆº gº/ r˜ 8…¢ 80|Q0 §"e† 80Ÿ¨ 8…†Qv P7–" ½7· ˆ~v "0~•–Q Pš Q0™Qv §¬ v|¨ 8…€Q "†Q r‚}Qv a‹/ 8…ŒQ0 r7š~ vŒ QvªQ "±Q ˆ‰Q r‰8 "±Q0 v7ƒ7 8¡7 "e† 8…†Qv §"†k 0„"¨q /0ŽQ ¹  gº uœ "†k k‰† 8‰ ˆ7–8 eu«7v  r7 k³Qv 8£ uœ "Ÿe "0|Qv ¾~Q7†… kPa†/… "0~•–Q rŽ~ Qª  aŽQ rŽ~ r7 /0¿Qv P‘Q ·7Q P7–" Q»7 r‘8 g0‡"0 ’~€ Qv‚}7 Qv|• rŽ~ r7 "†k k‰† Q»7 r‘8 g0‡"0 ’~€ Qv‚}7 8‰ ˆ7–8 aeQ"eu8… 7uu  8‰ g8 80À" g7/ "†k k‰† Q»7 ·ž Qv‚}7 3D9 ,&S9 1T," +9=9 5"0," ,T, 5"&45 *+U 56(*+ 1T," 39*/ =*" 8) 5)9 39F& 5"V$ /"=(

8

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

5H$ 5I5 *J9 -&*+ Q5< >1*3 &1j* L'&# 3f, ¹ E#b* &#d*#´ /#b* ¥ 6DE 6F1*3 C$% *#U*3 J^ *]*3 ,K, C$ 6#'< =5 ,s< .DE 6F-*# C<:* &b* &B 6F:* (9 c1Á*3 =H_*3´ 8#1G &S* *3f< 3#T *#$ 6FH_*3+ J#< L\E F9 6FH_*3 C$ J#< (\6 =b1 =< .$,@ 812 CD2+ &'& ()* L<*# C<:* &B 6#X =N& E#b* §.$, C)2 #%Ã& &#Ä =HI& >)2 J#' LW L$< G *#Å* =T* CÉ*3 *#É L<*# =5*3+ *3;* 6[ >w #É*3 6F%*3 *3$*# 78 Lh =HI& .w 6-, #
•

•

9

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

!"K* L M /N *O*+ $P$ $P$ r9 E#b* &'& ()* L<*# C<:* 6#H_*3 *3#^ FÊ*3 &#Ä &b* #N& 3w >$*3 J? 39*# 3<'+ 3$*# F9 E#b* =b1 &1j* L'&# =X 6DE 6F1*3 C$% *#U*3 J^ *]*3 ,K, ,$ .DE 6F-*# C<:* &b* &B+ *:* &B C$ E#`< &B =X 6FG 6#$*# ,56 .DE 6F-*# C<:* n>?C?.%E?Fo :* *3#
+WXW YZ[\ L M "]^ _`\_ rm2 .$ 3<9< =%)* ()* &b* 6DE 6F1*3 #N& &'& J
10

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

8)9 3D9 /"&':* 8) ;a*" "RE*+ ,"b* 56RD*+ ,"( ,T, ?#* 56c "#N* 6FH_*3 =)< #N& C$ &#N* *3$*# #N& .$ ,56 *3HÍ*3 &È9 J#' c19* 6FN*3 &49 &15& =_<@ "B .h =9 E#b* ()* =N& &49 L'&# .$ L<*# C<:* =)< #N&+ #%Ã& =Á =< .$, *:* &#\& Lh J#;*3 &b* =N& ($< *$2@ 812 *#<:*+ #Á2 =H9 *B &#% ?,¦&#'1 ()* #%Ã& E#É #12*# &49 &'& ?,@ ˆ$< C)2 C$ #N& G &49 &'& 6FH_*3 *Â< 69*# 6% &#V6 .HI*3 =b1 C$% &9% *:* ()* Lh E#`< #N& #$*# C$ &)*# 6F9*# CO< *#U*3 ()* (t 3HO< &'< 6:* 6#<:* 6$< #92 c1'< CD6o@ QT1 J#;*3 =4 3w .$, ()* *`* .S*3 6#%'< &#d@ "#H9 JX+ >% &'& 3<'% C<:* =Á c1?* CO< C)2 >s #N& L<*# 6#;*3 ,<*#+ &B 6#X #N Lh 3<`*3 3<`< CO< 6j& =5 *#9*# #W*+ J#B #% ½/8 &B #N& (Â*3 Î{Ï+ ,56 E#b* .$ >% ,-*# J#;*3 ,1j* (Y c1' *#w >$*3 =i*3 =b1 .OE+ =HI& *#w >$*3 x<* 6#H 31 #N&@

11

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

3dW e_fgh\ k_r _XWj 5s _]^ YWt e_u\n XW v[g w[\ Yxfy a_< J#12:* 6#i #9< .$´ gÉ*3 *392 C$% &;*3 C)2 ,$ J#;*3 (É*3+ &#Ì*3 .$, =HI& 3-@ 8#92 C- &#_ =HI& 6#b2 &; >)2+ #Á2 6D* >É*3 *#U*3 JÉ*3 *#U*3 6#i C[9 #N& =X 6)% F9 ,56 L`* E#Æ, 3- =B+ ()* Lh 6#V2 6#d&# #N& *392 6#;<@ "S* *U9+ *#O E#`< 6DE 6F1*3 6F91 >f< 6M*3 E#b* ,K, *:* ()* =HI& #N& 6#:, ¥ Lj *3$*# *#H´ ’1< 6F-*# E#'6 6FÉ*3+ •

•

rN& J^ #W* 6F%*3 ($< C)2 ()*¨ 1

2

 Mình có chia s ! kinh nghi "m h#c và thi trong bài “Tôi $ã h#c ti%ng Anh nh& th% nào”

12

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

CM*3 ,56 #A 6#j*3@ u<*# C<:* 6j6 *3#?C?.%E?Fo@ "† k_Š\n k_u\n kW\ 9\ˆZl}XkWZ\ 1gqkƒ}„´ Q3$*# *$2 6#<:* CK E#m* 6d&# 6#M9 6#?% 2:1 &b1 &49 J#'&# #$*3@ ˆ)* Lh E#`< #N& ,56 Lj ,;* .<:* c19* 6O< 8#HW*3 ,)< =%9*# *3#)2 CK &W LG #) 6b*3 ,)*3+ &'&# .\E =Ã6 #A 6#j*3+ C¶C@ V2 ('& 6j6 *3#)%+ (V, &'E >)%+ LÈ9 ,%>?,+ c1`* .Ë L?FC?F+ 6#H_*3 3N< .$ 78 0?.E>?LJ@ 0N .$ *#U*3 *3H_< #Ò*3 6#b, .Ã*3+ 3U .
•

•

•

5} kŽkj Q:* &#N* 6FH_*3 C[9 Li& =X ()* &B 6#X *Ê, 6F%*3 6jE =b1 .OE "b* Ft* .12A* J#` *]*3 6M #N&@ 8F%*3 *3$*# *$2+ 6M #N& .$ &#d*#+ J
•

13

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

"V9 1V9 3K$ 3E* *"B5 56(*+ &T 567*" "b, 34! 567*" ˆ$< C< =5*3 &W+ "ÔÔ .$, =HI& J#;*3 9*#q -*#´ g#;*3 ?, *#y+ ,1j* .$, Ñ?( 6#- #N& 08a¦"uu¦¾u@ u91 =B &B 6#X X* c19 .$, #2(F<> 9EE ,%(<.? ¹ + #%Ã& #N& e*>F%<> =X C)2 9*# W)2 "+ 6FH_*3 ?, &#Ä >)2 ¾9C9+ ,V2 6#b2 &; J#;*3 >)2 08a #92 .$, «?(¶ -*# =Á 6[*3 *B< G =b1 L'&#+ =)< #N& &#Ä &#% ()* &'& J)2 ()* &'&# &%>? *#H 6#T *$%+ &'&# .$, CÉ*3 ,56 *3;* *3U #%Ã& ÐF9,?Ñ%FJ F9 L9%+ ,$ ()* Lh E#`< 6M >)2 ,-*#pp@ 8#'< =5 6FH_*3 J#;*3 >)2 *:* J#;*3 ()2 &#% ()* &'< 3-+ ,$ .$ ()* &B 6#X #N& =HI& &'< 3-p 8#'< =5 *3f< &#_ L1*3 FÉ*3+ &B *3H_< >)2 ,O< #N& *$2 Lh &`* 6FG ()* 6F:* &%* =H_*3 6-, #
•

•

• •

3

 Xem thêm trong bài “T 'ng quan v ( l) p trình *ng d+ng di $,ng”

14

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

JÉ*3 &#Ä &b* (% 6M #N&@ 8#i >12 *#V6 ()* E#`< *#O .$´ 6#b2 &; #92 6F1*3 6m, &Z*3 J#;*3 6#X C' .s #Â*3 J)2 &#% ()* 6H_*3 6D* =HI&+ ,$ &#d*# ()* ,O< .$ *3H_< *s .M& #VE 6#1+ ()2 3- #N& *V2¨+ ()* Lh J#;*3 &B =4 J^ *]*3 &b* 6#w .$, ()* 6
15

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

-*# #92 =N& L'&# 8%*2 ˆ1Â< u'*3+ &B *#U*3 ($< CHI*3¨+ CÅ* &B *#U*3 =%)* C]* &#y, 3m* >Á .$ E#`< (w >$*3 C$ *#9*# &#B*3@ 0< CN*3+ L91 ($< C)2¨ *U9@ 8#92 C$% =B+ ,-*# #< CN*3 Lh =HI& *3#? &m1´ §, =9*3 6M 6-, #
16

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

5} kŽkj r[*3 6F%*3 &#_ C$% C)2 &#% ()* J
•

17

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

+WXW YZ[\ Q M 6X YdW rm2 .$ 3<9< =%)* ()* 3b* F9 6FH_*3+ L\E =< .$,@ ¢ 3<9< =%)* *$2+ >% =Á &B J
18

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

"b, *+—* *+U 34! 567*" *)( ?<' +9D~ rm2 ,56 &m1 #Y< ,$ ,-*# 6#H_*3 *#D* =HI& 6[ &'& ?, L<*# C<:* ,O< F9 6FH_*3+ ,O< C$% =)< #N&+ #%Ã& &#H9 (U .)2 "+ "ÔÔ+ ¶ 3<_ ?, &b* #N& *3;* *3U 3- =X >w J>?> n.DE 6F-*# *#l*3o+ Ñ?( C$ ,%(<.?@ 8#R E#b* ,`*3 v9,? J#' *#Y *:* ,-*# J#;*3 *#\& =T*@ $›\n ƒ}wƒvvƒv´ 2:1 &b1 J#' &9% CK 6F-*# =5+ LÈ >É*3 *3;* *3U .DE 6F-*# "+ "ÔÔ+ &B 6#X >Ò*3 ¾9C9@ QT1 ()* .$ .DE 6F-*# C<:* "ÔÔ &i*3+ ,i& .HW*3 FV6 J#' C$ ,i& =5 &)*# 6F9*# &Z*3 J% *#F%<> Cw #N&+ =5 E#Â (É*3 F5*3@ PO< J nkÒ*3 08a¦"uu C$ *3;* *3U •

•

•

4

 Xem k  -  h. n trong “T'ng quan v( l) p trình *ng d+ng di $,ng”

19

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

¾9C9u&F n"Õ+ ¾9C9+ /0/o×@ QT1 ,1j* #N& =X J?C?.%E?F *3;* *3U =B@ 0?C?.%E?F *:* .HW*3 6F1*3 (-*# &49 /0/ >?C?.%E?F #W< 6#VE L% CO< Lj &S* .)<@ Q3%$< F9+ ,56 Lj *3;* *3U *#H …9<.L+ /26#%*+¶ d6 *3H_< #N&+ >?C?.%E?F #É*3 &#% *3H_< *#$+ (`* 6#m* C¶@C@ rm2 .$ &m1 6F` ._< ,-*# *#D* =HI& 6[ ,56 Lj ()* #N& 6$< &#d*# *3m* #$*3+ J<*# 6T+¶ QT1 ()* ,1j* .$, ,56 i*3 >É*3 >< =5*3+ ¾9C9 .$ .M9 &#N* 6j6 *#V6@ rX 6)% Ñ?(L<6?+ #Å* 6)% Ñ?(L<6? (Ê*3 ¾%%,.9+ kF1E9.+ «', &#\& 6#Ê*3 *$2 J#;*3 E#`< &%>?F+ E#'* *#H 6#'*#¨@ 8FHO& J#< *y, ='+ #Á2 (-*# 6^*# *3#? ,-*# 3<`< 6#d&# C$ 6F-*# ($2@ -*# &Z*3 6[*3 .$ L<*# C<:* 78 *#H &'& ()*@ ;* =b1 6<:* CK .DE 6F-*# ,-*# =HI& #N& J#< C$% =)< #N& .$´ §"W (`* .DE 6F-*# CO< "¨@ -*# 6[*3 =<:* =b1 CO< J#9< ('% (
 Xem k  -  h. n trong “K  -  n/ng c0n có c 1a Web Developer”

20

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

P- L9%q 0Á2 6M x?, .)< JU .U .?L<3* g#< ,O< 6w >$*3@ "#l*3 69 #N& 3- J#< #N& ,56 *3;* *3U .DE 6F-*# ,OU .+ >?.?396?+ ?C?*6 7k E#Ò #IE+ &'&# (1<.>+ >?(13 "'& ÐF9,?Ñ%FJ+ &'&# LÈ >É*3+ ¶@ QT1 ()* =Á (% =B CM*3 …?L6e/7 (Ê*3 uEF<*3 &49 ¾9C9 &Z*3 J#;*3 c1' J#'& (% ,-*# #N& *#9*# CD2 .$ C-´ -*# =Á &B J969 L6F1&61F? ¶@o -*# (
• • • • • •

•

•

•

21

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

6#'*3 #%Ã& #W*¨@ P- 6#V2 6j* *#M9 6#?% J<*# *3#É*3 =HI& &#% ,`*3 ?,(?>>?> L2L6?,o´ ¶ 5} kŽk 8FHO& J#< #Y< §"b* #N& *3;* *3U 3-q¨+ #Á2 6M 6F` ._< §0N& .DE 6F-*# =X .$, 3-q¨ r[*3 .% &#N* L9< *3;* *3U =X #N&+ #N& ,56 *3;* *3U ,O< FV6 =W* 3<`* r[*3 &#)2 6#?% &;*3 *3#A+ #Á2 6DE 6F1*3 C$% JH 6#_< 3<9*+ #Á2 6DE 6F1*3 C$% #N& ¾9C9u&F
•

•

•

22

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

$&—* *c( ;RD*+ 57$ 89F, g#;*3 *#H &'& *3$*# *3#K J#'&+ *3$*# .DE 6F-*# .$ ,56 *3$*# J#' >w x<* C? J#9 J#'+ &'& ()* L<*# C<:* &B 6#X >w >$*3 x<* C
!_i\ Lj 5{} oW†^ o` oW’k ,8 5{} oW†^ ¡ Yxf~ "'& 6F9*3 Ñ?( >HO< =m2 .$ *#U*3 6F9*3 Ñ?( CK CÉ*3 C$ *3H_< 6-, C% =B ,-*# J#12:* &'& ()* =9*3 6-, C<*´ #66EL´¦¦ÑÑÑ@.<*J?><*@&%,¦ PÉ*3@ am1 .m1 CÅ* &B *#D* =HI& =7*+ &#i& *]*3 &%**?&6 &49 6F9*3 *$2 &#% E#yE ()* JT6 *j< CO< *#Å* C
23

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

6#;*3 6<* 3-+ #Á2 6-, ,56 "P ,Å1 &#% CR 6Fd &49 ,-*# nC> ()* .$ Ø1*<%F >?C?.%E?F #Á2 x?, "P ,Å1 &49 ¥ Ø1*%F >?C+ 6HW*3 6M CO< Ø1*<%F ’"o+ &#Ä*# LÈ9 .)< &#% E#Ò #IE@ ½%F,96 "P &49 .<*J?><* &Z*3 J#' Â*Ö &#Ä &b* (: &'& E#b* 6[ 6F:* .<*J?><* CK+ &#Ä*# LÈ9 ,56 &#l6 .$ ()* =Á &B ,56 "P J#'
Æ*@ 56 =M '* .<:* c19* 6O< "Õ .:* =b1 6F%*3 "P@ Q£ ,•^_ kl{\_ w`g "P J#;*3 &b* E#`< =ÜE .5*3 .Å2 *#H*3 E#`< FÛ F$*3 C$ *3\* 3N*@ "Í &#U *:* E#Ò #IE .$ ¥zÙ¥Ú+ LÈ >É*3 Ð%*6 &W (`* *#H 8<,?L Q?Ñ …%,9* #%Ã& eF<9.@ "'& E#b* =K ,É& *:* CÉ*3 &Z*3 J#;*3 c1' (\6 (Ç CK ,Ã6 #-*# 6#i&+ *#H*3 &'& ()* *:* &#R1 J#B &9*# 6#Ì*3 #$*3 6#Ì*3 .j<+ =f*3 6#_< L%'6 J^ &'& .s< &#d*# 6`@ Q#U*3 =HO< >)*3 /k½ =X ,'2 *$% &Z*3 ,G =HI&@ "P *:* =Ã6 6:* 6#?% Ð%F,96 §¤5h\ o¥ kl€¦ 5h\ w[\§+ 3É*3 >w =N& C$ E#m* .%)< n0%Ã& ()* =Ã6 6:* 6#?% Ð%F,96 ,$ *#$ 612X* >É*3 =H9 F9 6F%*3 c1`*3 &'% 612X* >É*3o@ §£ $k qŠ qXW |i} _Xg n‚  =Z km¡\n qr^ }[\_´ g#;*3 (<96?+ xE?F6+ #%Ã& 9L6?F+ >Ò &#Ä ,O< F9 6FH_*3+ &#Ä ,O< .$, ¥+z &'< =f '* &#i &#H9 .$, >M '* .O* *$%@ QT1 =Á 6[*3 .$, c19 ,56 &;*3 *3#A *$%+ &'& ()* *:* 3#< 6#_< 3<9* =Á 6É*3@ "'&# *$2 6#H_*3 3m2 6'& >É*3 *3HI&@ 0N &B 6#X c1]*3 "P &49 ()* C$% LN6 F'& J#;*3 6#HW*3 6
•

24

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

•

,_©} nW´ -*# 6[*3 3ÃE 6FH_*3 #IE &B ()* &#y, 3
!_i\ Qj 5_X} nWX ‚_–\n oª\ ‘ 5} kŽk Q3$*# 78 FV6 >w 6-, CÒ*3´ <6C<*+ CÉ*3@ 0Á2 6F-*# ($2 FÛ F$*3+ *5< >1*3 &#m* 6#D6+ J#;*3 6#Â< E#Â*3 J#` *]*3 &49 (`* 6#m*@ 8FHO& J#< E#Y*3 CV*+ #Á2 &#R1 J#B 6-, #
•

•

•

25

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

!_i\ § M 3`} oW†^ u91 J#< 6j6 *3#M '* 6#M& 6T+ 61m* 6#?% c1< 6F-*#+ .$, C
26

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

,(* ;RD*+ !"T5 569«* 12 *+"9F! ,V6..6 !V5"„ ,"( -.8.3(!.6 "'& ()* L<*# C<:* &S* =9*3 #N& #%Ã& ,O< F9 6FH_*3 Lh J#B #-*# >1*3 =HI& CK *#U*3 CR 6Fd C$ &#i& >9*# 6F%*3 *3$*# .DE 6F-*#@ ˆ$< C9*# 3-+ &;*3 C? .m1 6#- .:* =HI& &#i& 3-+ .HW*3 &B &9% J#;*3q , &#Ä 6#d&# &%>? 6#;<+ J#;*3 6#d&# .$, 6FHG*3 *#B,+ ?, *:* =R*# #HO*3 6#T *$%@ 0?C?.%E?F+ &'& ()* Lh >w =R*# #-*# E#'6 6Ff* Li& C$% &%* =H_*3 ,-*# =Á &#N*@ -*# &#Ä .?C?.%E?F C- (`* 6#m* ,-*# &Z*3 .$ >?C?.%E?F@ "%* =H_*3 &49 ¥ 6?L6?F n’e ?*3<*??Fo &Z*3 &B ,56 Lj &#i& >9*# 6HW*3 6M *#H*3 .:* &9% Lh J#'&@ "'& &#i& CÉ Lh =HI& ,<:1 6` 6#?% 6#i 6M 6[ 6#VE .:* &9% *#y@ 3mf ¨´ i& .HW*3 =K &DE 6F%*3 ($< >M9 6#?% ,i& .HW*3 C$ c1`*3 &'% 612X* >É*3 &49 &'& &;*3 62 G 8/@ 0"+ G &'& 6Ä*# 6#$*# J#'& Lh &B ,56 Lj &#:*# .A&#@ ¬lƒq_ƒl”f\WZl -ƒoƒ|Z‚ƒl "'& ()* L<*# C<:* =< 6#M& 6DE #%Ã& ,O< F9 6FH_*3 6#H_*3 =HI& &#i& >9*# *$2@ g<*# *3#9% =5*3 6F%*3 J#%`*3 ¹{{Ù×{{Þ@ k% &#H9 &B J<*# *3#)2 *#M '* #
27

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

&%>? &'& ,%>1.? =W* 3<`*+ Ð?+ &'&# 6#i& .$, C? =HI& ,56 6#_< 3<9* J#%`*3 ¥Ùz *],+ &'& ()* Lh =HI& 3N< .$ k?C?.%E?F nQ#?F #%Ã& u?*<%F 6Ò2 C$% &;*3 62o@ ¢ 3<9< =%)* *$2+ ()* =Á .$, c19 ,56 Lj EF%Ø?&6+ J#' F$*# CK ,56 Lj &;*3 *3#A@ i& .HW*3 &49 >?C?.%E?F C$% J#%`*3 Ý{{Ùß{{Þ@ /#Y*3 CV* &#% >?C?.%E?F >^ *#<:* .$ J#B #W* Ø1*<%F@ Q3H_< E#Y*3 CV* Lh #Y< ()* CK *#U*3 >M '* ()* =Á .$,+ &'& J#B J#]* ()* =Á 3ÃE E#`< C$ &'&# 3<`< c12T6q Q3%$< F9+ (1Â< E#Y*3 CV* Lh 6DE 6F1*3 C$% *#U*3 &;*3 *3#A ()* =Á 3#< 6F%*3 "P@ P- >?C?.%E?F =Á &B J<*# *3#9*# *3#^9 Ø1*<%F =X #Y<+ *#_ C` #92 ,\& .s< *U9@ ¢ 3<9< =%)* *$2+ ()* =Á =HI& &%>? ,56 Lj ,%>1.? E#i& 6)E #W*+ 6#9, 3<9 #NE+ &%>? F?Cf* *y* JM*3 >9*# 6?C?.%E?F+ *#D* &` *#U*3 C? C$ J^ 6#1D6+ ()* &B 6#X =< 6#?% #HO*3 J^ 6#1D6´ u?*<%F k?C?.%E?F àá 8?&#*<&9. a?9> àá u%Ð6Ñ9F? eF&#<6?&61F?@ QT1 ,1j* .$, C àá /F%Ø?&6 9*93?F àá 9*93?F@ ¢ 3<9< =%)* =b1+ .Ê* F9*# 3
28

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

"m˜\n œf›\ |¨ $X\Xnƒ}ƒ\k„

"m˜\n e… k_fŒk 5ƒ^_\W^X|„

5ƒX} 3ƒXvƒl ˆ)* 6FG 6#$*# 6FHG*3 ,56 *#B, *#% *#Y J#%`*3 ¹ÙÝ 6#$*# C<:*@ Q3%)< 6F[ &%>?+ ()* &S* E#`< #NE #$*# CO< &VE 6F:*+ ('% &'% CO< J#'&# #$*3+ c1`* .Ë &VE >HO<@ ¢ 3<9< =%)* *$2+ ()* Lh >b* #N& 6#:, ,56 Lj J^ *]*3 .Á*# =)%+ J^ *]*3 c1`* .Ë C¶C@ ¢ ,56 Lj &%*3 62 *#Y+ >?C?.%E?F .m1 *], C$ &B J<*# *3#?F@ ˆ)* CÅ* &S* J#' *#?+ &%>? 3?F 6#H_*3 C$% J#%`*3 ¥{{{Ù¥×{{Þ

1ƒ\WZl -ƒoƒ|Z‚ƒl u91 ,56 6#_< 3<9* .$, C? §6#b* 6#'*#¨+ ()* &S* E#`< (?L<3* C$ L%.16<%*@ Q3%$< F9+ ()* &S* E#`< #HO*3 >Å* &#Ä (`% &'& ?, Ø1*<%F ,O< C$%+ &Z*3 *#H 6#9, 3<9 &%>? F?C?C &Z*3 J<:, .1;* CR 6Fd 6?9, .?9>?F+ >% =B ()* &Z*3 &b* ,56 &#l6 J^ *]*3 >
!lZ®ƒ^k $X\Xnƒl a:* =T* CR 6Fd *$2+ ()* Lh &B FV6 d6 #%Ã& #b1 *#H J#;*3 &B 6#_< 3<9* &%>?@ r9 E#b* 6#_< 3<9* &49 ()* >Ò*3 =X =N& ('%+ .HO6 C%â+ .HO6 Ñ?(6F?6#% ¶@ rÒ9 =V2+ &;*3 CHO<+ ('% &'% CO< J#'&# #$*3 C$ &VE 6F:* CK 6M '*+ .m1 .m1 ()* &S* E#`< =< E#Y*3 CV* ,56 Lj i*3 C<:*

5ƒ^_\W^X| 3ƒXvƒl ˆ)* &b* #M '*@ Q#U*3 c12T6 =R*# .O* CK 6#? ¶ Lh >% ()* &#R1 6F'&# *#Å*+ 3<`< 6#d&#¶ P- L9%

29

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

=X 612X* 6#$*# C<:* &#% >M '* *U9@ ˆ)* .$ *3H_< c12T6 =R*# LM 6#$*# ()< &49 ,56 >M '*+ >% =B *T1 >M '* 6#$*# &;*3 ()* Lh =HI& 6#HG*3 ,56 J#%`* (%*1L J#9 J#' 6Ò2 6#?% &#d*# L'&# &;*3 62@ i& .HW*3 &#% / C$% J#%`*3 ¥{{{Ùz{{{Þ@

'q g#< =H9 F9 CV* =K 6#- E#`< 3<`< 6#d&# #IE .Ë+ 6#$*# C<:* J#'& *B ,O< #
$X\Xnƒl”-Wlƒ^kZl "#l& ,[*3+ G CR 6Fd *$2 ()* =Á =HI& 3N< .$ LTE+ &VE 6F:*+ .Á*# =)%+¶ al& *$2 ()* Lh J#;*3 &B 6#_< 3<9* ,$ &%>?@ PM*3 c1< 6F-*# .$, CÉ*3+¶ "#T =5 =Á< *35 &#% CR 6Fd *$2 &#:*# .A&# J#' .O* 6Ò2 &;*3 62 C$ &VE (D& ,9*93?F *:* ,-*# J#;*3 &B &%* Lj &É 6#X@

1Zˆk‰Xlƒ Vl^_Wkƒ^k 1j* =)6 &#i& >9*# *$2+ d6 *#V6 ()* E#`< &B J#' *#M*3 ,56 6?9,+ .$, C =X 6#Ò J#;*3 &B c12K* c1`* .Ë+ *#H*3 .)< &B J#' *#
Q3%$< *#U*3 &%* =H_*3 6F:*+ &'& ()* &B 6#X =< 6#?% #HO*3 u9.?L+ g^ LH &b1 *j< nˆFuo+ ˆ1L<*?LL e*9.2
30

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

5} kŽk "B J#' *#?C?.%E?F+ 6?L6?F+ ˆe@ O< =< .$,+ ()* Lh =HI& 3N< .$ ÐF?L#?F #%Ã& Ø1*<%F@ a$, C?C?.%E?F+ >^ *#<:* .$ &Z*3 .:* .HW*3@ ˆ)* &B 6#X E#'6 6F
•

•

31

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

34! 567*" 89:* *:* ;b, *"U*+ 1T," +7~ Q#?C?.%E?F 6#- &b* 3- E#`< =N& L'&#+ &%>? *#? >G ,$ J#;*3 &#R1 6-, &'&# &`< 6#?+ &i &%>? #%$< ,s< JG &B@ s< &1j* L'&# >Ò #92 #92 >G =K1 .$, ,-*# *35 F9 =HI& C$< =? "%,E.?6? &#% 6#V2 6F1*3 (-*# ,56 >?C?.%E?F =N& d6 #W* ,56 &1j* L'&# ,s< *],+ G P?C?.%E?F &S* .)< Ff< *#y@ ˆ$< C?+ &B .l& ()* Lh 3ÃE &'& 6FH_*3 #IE *#H´ 6'&# ,?6#%> 6#T *$%+ &#<9 &.9LL F9 L9%+ =Ã6 6:* (Å* 6[ 6Â*3 c19* *#H´ xm2 >M*3 J
32

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

Q£ ,|ƒX\ ,Zvƒj V "X\vwZZe Zˆ VnW|ƒ 1Zˆk‰Xlƒ ,lXˆkq}X\q_W‚ -*# =N& ".?9* "%>? 6F%*3 6#_< 3<9* &S* .$, C?C?.%E?F@ -*# J#12:* &'& ()* *:* ,19 (`* 3j&+ C[9 =X =N&+ C[9 =X E#S*3 J#< 3ÃE =f*3 *3#? *31+ &B 6#X &b, &1j* *$2 =DE C$% =b1 *B C$ (\6 *B =N&@ Q#H &'< 6:* §".?9* "%>?¨+ =m2 .$ &1j* L'&# #HO*3 >Å* &'& ()* >?C?.%E?F C? L)&#¨@ 8#T *$% .$ &%>? L)&#q 8#?% =R*# *3#^9 &49 L'&#+ =B .$ &%>? >w =N&+ >w #w LÈ9 &#U9 C$ (`% 6F-@ "B ()* Lh x- ,Z< (`%´ v<_<+ &B 3- =m1+ &'< =V2 9< &%>? &#` =HI&@ _< ()* 6#È =N& .)< &%>? &49 ,56 >M '* ,-*# =Á .$, &'&# =m2 ¹ÙÝ 6#'*3+ x?, &B #? &49 ()* &#H9 =HI& L)&# .\, =m1@ "1j* L'&# Lh 6#92 =Â< &'&# *3#^ &Z*3 *#H &'&# C? &49 ()*@ 1•^_ o‡ k_W’k e’ o` &9”&A §£ -Z\¯k }Xeƒ }ƒ k_W\e 56 &1j* L'&# FV6 #92 CK 6#É*3 6F%*3 6#Ò*3 FV6 .H_<+ #Á2 6#Ò*3 d6 L12 *3#^ *#V6@ "1j* L'&# J#;*3 #HO*3 >Å* &'&# 6#Å* &'&# 6#w LÈ >É*3 =Í 6j* &;*3 Li& *3H_< >Ò*3 *#V6@ u'&# &S* #HO*3 >Å* ,56 Lj &%*6F%. *:* >Ò*3 J#< 6#<%+ >F%E>%Ñ*+ ¶ C$ &'&# LÈ >É*3 *#U*3 &%*6F%. *$2 #IE .Ë@ Q3%$< F9 &S* &B ,56 &m1

33

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

A* CK §56 (166%* ='*3 3<' ¹{{ 6F?L<3*@ *3 =H9 F9 J#'< * >?L<3*¨ nk?L<3* 6DE 6F1*3 C$% *3H_< >Ò*3o+ &#l 6FN*3 C$% 6d*# #U1 >É*3 C$ >w >Ò*3 &49 6#12 6#% =B >m* >?L<3* #92 .DE 6F-*# &Z*3 =K1 *:* =N&@ Q#H 6M9 =K+ &1j* L'&# E#m* 6d&# 6#É*3 6#H_*3 *3$2 *#H´ &'*# &È9+ 64 .)*#+ ,'2 .)*#+ ¶ &#% 6O< =?L<3* *$2 6#$*# &;*3+ >?L<3* J<9 6#V6 ()<@ r`, (`% &'& ()* Lh *#
1•^_ o‡ \n_‡ \n_W†‚ o` \n`\_ |Œ‚ kl{\_ ±£ 5_ƒ ,|ƒX\ ,Zvƒl "1j* L'&# ,9*3 6:* 8#? ".?9* "%>?F+ =N& &Z*3 3<;*3 3?@ 812 *#<:*+ &B ,56 =1*3 #9< &1j* L'&# .)<¶ #%$* 6%$* 6F'< *3HI& *#91p 8F%*3 J#< ".?9* "%>? 6DE 6F1*3 C$% J#d9 &)*# J^ 6#1D6´ #HO*3 >Å* .DE 6F-*# C<:* &'&# 6 &#i& &%>? C$ C? L)&#Ö 8#? ".?9* "%>?F .)< 6DE 6F1*3 C$% J#d9 &)*# *3#K *3#
6

2#c thêm v( câu chuy"n này trong bài vi %t “M,t button tr 3 giá 300 tri"u

$ô” 34

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

&;*3 C?F+ ~*&.? ˆ%( *B< CK *#?C+ ,9*93?F+ / &#% 6O< "†@ ²£ 5_ƒ !XqqWZ\Xkƒ !lZnlX}}ƒl rm2 .$ ,56 &1j* L'&# C?C?.%E?F *B<
*3+ &Z*3 *#H >m* 78 *B< F<:*3@ 8'& 3<` x?, LM *3#%9*# *3#w =N&@ u'&# C; &Ò*3 #U1 >É*3 &#% *#U*3 ()* .DE 6F-*# C<:* =9*3 &`, 6#V2 E#m* Cm*+ &b* *#U*3 ._< J#12:* 6F%*3 LM *3#
³£ 5_ƒ "ƒX|k_g !lZnlX}}ƒl ˆ)* &B (Å* 6O< C; Lj *#U*3 (A*# 6Fb, 6FN*3 C$ ,Á* 6d*#Ö .DE 6F-*# C<:* FV6 >w ,\& &'& (A*# 6<, ,)&#+ (y% E#-+ =91 J#OE+ ¶q 0Á2 =N& 8#? 0?9.6#2 /F%3F9,,?F  ,56 &1j* L'&# C$*# F<:*3 &#% >?C?.%E?F@ "1j* *$2 ,-*# =N& 6[ #f< =b1 *], J#< 6-*# &_ 6#V2 *B 6F:* ,56 6F9*3 ?(%%J@ Q#H 6M9 =K+ =m2 .$ ,56 &1j* L'&# >$*# &#% >m* .DE 6F-*#+ *#H*3 *5< >1*3 J#;*3 *B< 3- CK .DE 6F-*# ,$ .)< *B< =T* ,56 CV* =K ,$ .DE 6F-*# C<:* *$% &Z*3 c19* 6m,´ Li& J#Y?@

35

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

!"K* Q M /N *O*+ ,R*+ ,C*+ 8F%*3 E#b* ¥+ ,-*# 6DE 6F1*3 *#
8`W e_•W \W†} ^Ÿ w›\ klZ\n \n`\_ ‚_i\ }‡} /#b* *$2 3<`< 6#d&# CK ,56 Lj J#'< *?L<3* E966?F*+¶ 56 Lj J#'< *)2 G 6FH_*3@ 812 *#<:*+ L'&# 3<`< 6#d&# 6#:, (Ê*3 3w #É*3 &#l*3 C$% 6#M& 6T c19 &'& Cd >É &É 6#X@

36

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

$J5 ?&55(* 56a +9T §´´ 569F& ;— M ,T9 *"7* /"T, 8P +9V( -9F* 8) ,"C, *O*+ *n`g z¢X \n`g zmXt ^ }k klX\n ‰ƒw w•\ _`\n‘ rm2 .$ ,56 A* *#% *#Y+ CK ,56 (166%* *#% *#Y C$ ,56 Lj 6Ò*3 =Á &#% #T6 #$*3 C$% 3Ò*3 E#`< =]*3 *#DE #%Ã& =]*3 JË 6FHO& J#< ,1j* 6#9*# 6%'*@ r5< .DE 6F-*# *3#^ FÊ*3 §"#Ä &b* =]*3 JË 6$< J#%`* .b* =b1+ 6#;*3 6<* *3H_< >Ò*3 &B 6#X =HI& .H1 .)<+ G *#U*3 .b* L91 #N J#;*3 &b* *#DE =R9 &#Ä C$ 6#;*3 6<* 6#9*# 6%'* *U9@ Q3H_< >Ò*3 6Ò*3 c192 .)< ,19 #$*3+ #9< (:* &Ò*3 &B .I< &S* 3-q¨@ 3Œ‚ kl{\_ oWh\ YuW e_W \n_… lµ\n }{\_ _Wšf \nmdW v¶\n r5< *3Z >?L<3*?F =Á .$, ,56 &15& 6#È *3#Ò*3 =X #N 6#M& #Ò*3 FV6 3#y6 CÒ*3 &S* LI (R ,V6 6#;*3 6<* &' *#m* #%Ã& (R 3È< ,9<. LE9, C$% #5E 6#H@ PO< *#U*3 *3H_< >Ò*3 c192 .)< .b* 6#i #9<+ 6#i (9  =j< 6HI*3 ,$ &'& >?C?.%E?F *#\, 6O<+ 6-*# &`*# &Z*3 &#Ì*3 J#' J#Æ, #W*@ 0N J#;*3 *#O =HI& ,D6 J#Æ1 &49 ,-*#@ Ã& >Ò &#i& *]*3 §’1:* ,D6 J#Æ1¨ CÅ* #%)6 =5*3+ =T* 6D* ¥Ý{@{{{ *3H_< >Ò*3 &#i& *]*3 *$2 ,s< *3$2+ Î×Ï 7

2ã gi4 i thi"u trong bài “L) p trình viên thì nên $#c sách gì?” 37

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

6F%*3 Lj =B J#;*3 6Ò*3 ,19 #$*3+ FV6 *#Ò*3@ 8#T ,O< (?C?.%E?F *#Ò*3+ *#H*3 6#D6 F9 J#;*3 E#`< CD2@ ?fkkZ\ kl¥ nW• §´´ klW†f Yu |X r5< *3Z >?L<3*?F =Á 3<`< c12T6 CV* =K *$2 ,56 &'&# C; &Ò*3 =W* 3<`*@ 0N (Y =< *l6 r]*3 gË+ 6#92 C$% =B (Ê*3 *l6 8S*3 &#U §ˆ)* J#;*3 &b* =]*3 JË+ #Á2 (V, *l6 8%9*# Lj 6]*3 ¥×@{{{@{{{Þ@ u91 *], =b1 6<:*+ 6#1 *#DE &49 Ñ?( 6]*3 =T* 6D* ¹{{ 6F
±*# ,<*# #N9

38

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

$k ^•W \_{\ e_•^ o‡ &9”&A o` ^_r^ \·\n ·<* *#\& .)< ,56 &#l6 CK ~7 C$ ~·¯´ ~7 n~L?F 7*6?FÐ9&?o  v<9% >Ò*3´ rm2 .$ *#U*3 3*3H_< >Ò*3 *#-* 6#V2 C$ 3Ò*3´ rm2 .$ *#U*3 3- *3H_< >Ò*3 6F`< *3#É *#H J#< ()* ,19 #$*3 6F:* 6$*# &#% J#'&# #$*3 &#d*# .$ ~·@ 8F%*3 &m1 A* 6F:*+ (Ê*3 &'&# 6#92 =Â< ~7 n8#:, ,56 (166%*o C$ J#;*3 (\6 =]*3 Jd+ #N =Á 6FM& 6%9*# Lj ('* #$*3@ 0Ì* *#% .l& ,O< #N& .DE 6F-*# 6%$* E#`< CÉ*3 6#=l*3 .$ 3<9% >Ò*3+ 6#- ~7¦~· .$ *#U*3 6#i c19* 6FN*3 *#V6 *#-+ &B J#< &S* #W* &` &#i& *]*3@ 0Á2 *#O ,56 =Ò*3+ *#H*3 =;< J#< J#;*3 E#`< CD2 ~7¦~· &B 6b, c19* 6FN*3 J#;*3 Jy, 3- &#i& *]*3 &49 ,56 &#HW*3 6F-*#@0Á2 *#O+ =;< J#< ,56 (166%* *#% *#Y &Z*3 &B 6#X &B 3<' =T* ¹{{ 6F
•

•

•

8

 Xem l5i bài vi%t “T'ng quát v( UI và UX”

39

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

3&4* 8P 5.,"*9,V3 -.?5 M *¸ /9@! *)'t -&':* /9@! 56RE, 8?&#*<&9. k?(6 nQI J^ 6#1D6o .$ ,56 ,B* *I ,$ #b1 *#H .DE 6F-*# C<:* *$% &Z*3 E#`< 3'*# 6F%*3 c1' 6F-*# .$, C "1**<*3#9, n"#9 =Ç &49 ÑM '*@ 8?&#*<&9. k?(6 (9* =b1 FV6 d6+ *#H*3 6#?% c1' 6F-*# &%>? 6#- &$*3 *3$2 *B &$*3 *#É´ rX 6'< LÈ >É*3 &%>? =Á C? C$ LÈ9 =;< &#l6 n6#92 C- E#`< 6'&# 6#$*# ,%>1.? F<:*3o@ "'&# .$, *$2 *#9*#+ *#H*3 J#< &B (13 6#- LÈ9¶ #5& ,'1 C- &%>? =HI& &%E2 G *#? &#% >w ,G F5*3+ 69 C? Lh &B ,56 =j*3 <Ð@ "B (13 J#4*3 .<:* c19* 6O< J?@ s< c12T6 =R*# 69 =H9 F9 6F%*3 .l& &%>? =K1 .$, 6]*3 Lj *I *$2 .:*@ r?(6 6d&# .1ä Lh 3m2 F9 *#
•

•

40

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

5•^ _[W ¹e_\n e_W’‚º ^X \» QT1 J#;*3 6F` *I+ &` Cj* .Å* .Á< Lh >b* &#f*3 &#V6 6F%*3 c1' 6F-*# E#'6 6F?(6 .$, &#D, 6j& =5 &49 6?9,+ =f*3 6#_< `*# #HG*3 =T* 6<*# 6#b* .$, CM '*+ C- (9* =b1 (R 6Fw >?9>.<*? *:* 6?9, E#`< &%>? Æ1+ L<*# F9 6?&#*<&9. >?(6@ QI .$, &#% 6j& =5 E#'6 6Fb* .)<+ >Å* 6O< 6Fw >?9.<*? Ùá &%>? Æ1 Ùá 6#:, *I+ 6)% 6#$*# ,56 CS*3 .Æ* c1Æ*@ 56 6d*# *]*3 (-*# 6#H_*3 &B 6#X &#Ä ,V6 ¥ *3$2 =X #%$* 6#$*#+ *#H*3 *T1 6?&#*<&9. >?(6 c1' *#? #?9>.<*? C$ >Å* =T* 6#V6 ()< &#% *#M '*@

PS*3 6FS* .Æ* c1Æ*´ 6Fw >?9>.<*? Ùá *I Ùá &%>? &#D, Ùá 6Fw >?9>.<*? *» ŸW ƒ} kp Yxf k˜W~ QT1 *#H *I &;*3 &49 P% &'& ('& §G 6FX*¨ >Ò*3 Cj* J#;*3 =l*3 &'&# 6#- *I J^ 6#1D6 n6?&#*<&9. >?(6o .)< >% &#d*# (`* 6#m* &'& >?C?.%E?F 3m2 F9@ "B FV6 *#% 3m2 F9 6?&#*<&9. >?(6´ k% J#'&# #$*3 6#92 =Â< F?c1M '* J#;*3 JRE 6#92 =Â< &#% E#Ò #IE •

41

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

k% (R >?9>.<*? >d #%Ã& ,9*93?F 3m2 'E .M& *:* >?C?.%E?F &%>? Æ1 =X #%$* 6#$*# &;*3 C?C?.%E?F .$, (? J#;*3 &B &%,,?*6 C$ J#;*3 C 3?(6 .$ >% &j Ë´ "#VE *#D* .$, *#9*# =X &B L`* E#Æ, 3<9% J#'&# #$*3+ 3<$*# >M '*+ CV* =K 6?&#*<&9. 6d*# L91@ 0%Ã& 6F%*3 &'& &;*3 62 L69F61E+ *3H_< 69 xm2 >M*3 L`* E#Æ, J#` 6#< 6j< 6#Ò*3@ al& *$2+ &#i& *]*3 C$ 6j& =5 E#'6 6F? Æ1 #92 J? *$% &Z*3 Lh &B (13+ >M '* *$% &Z*3 Lh &B 6?&#*<&9. >?(6@ "'&# =j< E#B CO< 6?&#*<&9. >?(6 .$ 6), *3H*3 C? =X &%>? FÛ F$*3 #W*+ >w &`< 6?(6+ Cd >É *#H J#< .$, EF%6%62E? =X >?,% &#% J#'&# #$*3@ P- EF%6%62E? x%*3 Ff< Ci6 .1;* *:* 69 &B 6#X xÒ *I@ 812 *#<:* *:* &Æ* 6#D*+ &B FV6 *#
•

•

/F%6%62E? (Ê*3 3?

42

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

0Á2 *#O ,56 =? Æ1+ &%>? =X1+ ()* =9*3 6#:, *I &#% >M '*@ QI =_< &B C92 &B 6F`+ ()* J#;*3 6F` 6#- *3H_< J#'& 6F%*3 6?9, Lh 6F`@ 8?&#*<&9. >?(6 E#`< 6F` (Ê*3 6#_< 3<9*+ &;*3 Li& C$ ,f #;< *HO& ,\6 &49 .DE 6F-*# C<:* =V2 *#y@ |+ *T1 L\E *3#Ä C? Æ1 6#%`< ,'<+ J#;*3 L9% =m1p 56 .DE 6F-*# C<:* §xV1 Lj¨ *$% J#'& Lh 6F` *I 3<Ò, ()*@

5} kŽk 8?&#*<&9. k?(6 .$ *#U*3 ,B* *I CK J^ 6#1D6+ 69 §,HI* *I¨ =X E#'6 6FM '* #%Ã& §E#' L`*¨ "B *#% J#'&# #$*3+ >% >?C?.%E?F &%>? Æ1+ >% c1< 6F-*# J#;*3 6j6 rX 6F` *I+ &B 6#X C
•

•

•

43

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

3&4* 8P ,($$.*5 ,(-. !"(*+ ,T," /9@$ "9F!„ "%,,?*6 &%>? .1;* .$ CV* =K 3m2 6F9*# &Á< Li6 =b1 ,Ç 6F'* 6F%*3 3Ã* FÊ*3´ "%>? *#O E#`< &%,,?*6@ 8#1G ,O< =< .$,+ LW *#DE 3<9*3 #f+ ,s< J#< =N& &%>? J#;*3 #? *31 c1' =å% &%,,?*6 3- &`¨@ 8#T *#H*3+ .H1 .)& 3<9*3 #f (9% *],+ =N& &%>? &Z*3 *#? J#;*3 &%,,?*6 &#% 6O< &%>? &%,,?*6 =b2 =4 C$ L)&# LhÖ 69 CÅ* (]* J#%]* J#;*3 (?+ 69 *#H .HI, =HI& (d 6R&# CÛ &;*3 6F%*3 6F12K* 6#12T6@ 89 *35 F9 =HI& &'< 3N< .$ §=)% &%>?¨+ §=)% &%,,?*6¨+ =Ã6 ,56 (HO& &#m* C$% &%* =H_*3 CÛ =)% =Ä*# &9% nr)% G =m2 .$ =)% .Ë+ J% E#`< =)% *#)& *#H uW* 8Ò*3+ &'& =)% #U1 =[*3 #9*# &#V* 6#<:* #)@ 8FHO& J#< &#T6+ ;*3 &#;* Ú 6#9*# JHO< =' .m1 *],+ 6#m* C$ &'* JHO< ,Ã6 =' &B J#\& >S*3 &#U´ u91 (j* ,HW< 61Â<+ J#;*3 ,9*3 (<*# J#d@ 8#`% ,5& 6Fl& 6#)&# =K1 &B 6#X >Ò*3 .$, J
44

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

8Â*3 JT6 .)<+ &15& =_< 61 JÉ*3 6È C< JÉ*3 6#9*# J? &#)2 =HI& .$ ,[*3+ =;< J#< &%>? &#% x%*3 .$ *5E+ &#` &b* &%,,?*6@ Q#?@ rj*3 &%,,?*6 *$2 *#É*3+ =N& FV6 (1f* &H_<+ *#H 6#X ,V2 JÇ ,O< #N& CÛ &;*3 ,$ ($2 6FS ,l9 ,'2 (\6 &#HO& &'& &#<:1 6#i& &9% L<:1 6F%*3 CÛ #N&@ •

•

•

!!"#$% '($ )*+, -. /0/ 1#2, )3 /4% 56,7 '8% 9+* 1:-;$/ $,)<= #%;>?$,)<= @AB !!CD* 5.) %EE%@ 5F$ /#G% HI) J:6 $,)<= KL !!M:@N) /0/ 1#2, )3 /4% 56,7 @ >*E ?$,) $ O PL $ Q @R;S,7)# L $TTA B K<$= O @<$=!UL !!V0, )E0 )EW 9+* %EE%@ /#G% HI) J:6 XL ES):E, KL !!CE6 HI) J:6 E% X

89 6#V2 =%)* &%>? 6F:* 612 &%,,?*6 J#' =b2 =4 *#H*3 &#Ì*3 &B Ë *3#^9 ,V2+ 6#_< 3<9* C?@ 56 Lj &%>?F 6#H_*3 >Ò*3 6FS´ 8#:, &%,,?*6 =X (?+

45

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

&%,,?*6 .)< ,56 Lj &%>? J#;*3 >Ò*3 *U9@ 56 Lj .s< J#'& ,$ &'& =)% #U1 *$2 #92 ,\& E#`< *#H´ "%,,?*6 .)< &%>? &Z =X §=K E#S*3¨@ "%>? J#;*3 >Ò*3 *U9 6#xB9 =<+ =[*3 &%,,?*6@ "B uPQ Ff< 6#- J#< &b* &%>? &Z &#Ä CÉ*3 uPQ &B 6#X 6F9 F9 .%3 FÛ F$*3 C$ 6É*3 #W* *#? ,56 6#_< 3<9*+ #b1 *#H ,N< .DE 6F-*# C<:* Lh =)6 =T* 3<9< =%)* *$2@ ¢ 3<9< =%)* *$2+ 69 =Á &`, 6#É =HI& ,56 &#m* .Ë CÛ #N& ´ "%,,?*6 *:* .$ Ñ#96+ J#;*3 E#`< #%Ñ@ "%,,?*6 =X *B< &%>? .$, 3-+ J#;*3 E#`< =X 3<`< 6#d&# C? .$,@ al& *$2+ .DE 6F-*# C<:* =Á #? E#i& 6)E+ >$< >S*3+ ¥ >S*3 &%,,?*6 *3\* 3N* Lh 3w >$*3 #? .$, 3-´ •

•

!"#$%& (#)*&+ ,(-.%/012 3 44567 8 !.9/ +: ; +? =<+<#<@* 44AB+ CD/0 &(=* !.E& +F! ;*+";/ (#)G H

812 CD2+ &'& (D& &9% *#m* xH9 =Á Fl6 F9 =HI& ,56 =j< 6F'@ g#< LÈ9 &%>?+ &%,,?*6 6#H_*3 J#;*3 =HI& LÈ9+ Lh >Å* 6O< 6-*# 6F)*3 &%>? ,56 =Ê*3+ &%,,?*6 ,56 *Ç%@ 89 E#`< =N& &` &%>? .Å* &%,,?*6 =X (? .$, 3-+ E#d 3VE =;< 6#_< 3<9*@ "'&# &%,,?*6 6j6 *#V6 &#d*# .$ >Ò*3 &%>?+ &#d*# &%>? Lh *B< &%>? .$, 3-@ Q35 F9 =HI& =? #N&¨@ ,›\_ nW˜W ou eW’} k_Ž\n _žf eW’} 8u ^Z}}ƒ\k k_Ž\n _žf ^Z}}ƒ\k„ rm2 .$ &`*# 3? J#;*3 &b* &%,,?*6 *#969(9L? &Z*3 .$ &%,,?*6@ "%>? &Z*3

46

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

*#H &%,,?*6+ &%,,?*6 &Z*3 *#H &%>?+ &%>? C$ &%,,?*6 612 #9< ,$ ,56@ 812 *#<:*+ =;< J#< (\6 (15& E#`< >Ò*3 &%,,?*6´ g#< C%&1,?*6+ C- *3H_< >Ò*3 e/7 &#Ä =HI& =N& >%&1,?*6 &#i J#;*3 =N& &%>?@ 56 Lj 6FH_*3 #IE J#'&´ &%,,?*6 E#`< .$ Ñ#2 &#i J#;*3 E#`< Ñ#96@ 89 C? *#H CD2@ "%,,?*6 &B 6'& >É*3 *B< *#U*3 =? J#;*3 *B< =HI&@ "S* C? .$, 3-+ &#)2 *#H 6#T *$%+ &#Ä &b* =N& &%>? .$ #5-?:*:/:@7AB C >7*4>( >:(;5-@=>5-L(34*A 0(*FG 0(34*B C 0(*FG 54*34*D !!K$)( *+( /01( ., /01* /01( .,- 2) I5> A0(* 0 M ND 0 O 0(34*P.7(2*$ D 0QQB C 54*34*F0G M 0(34*F0G!RD !! S01* TU ;4/42V @:4 (,W 3$X0 >7-5Y7 !! Z[W ., &5--7(* /\* /4]& 3$X0 Y01*V !! TU 20X0 *$^&$ ._ ;5 *: Y01* &5;7 #5(@5.7P`>0*7A a#:.. *$0@aBD ED >7*4>( 54*34*D E

¢ =m2+ 69 J#;*3 E#4 *#D* =5 #U1 >É*3 &49 &%,,?*6@ Q#H*3 CV* =K .$´ Q#?F .I< >É*3 &%,,?*6 =X C? J#;*3 FÛ F$*3+ J#B #É*3 &%,,?*6 =X .VE .? ,56 &B FÛ F$*3 *#V6 &B 6#X+ (Ê*3 &'&# =Ã6 6:* (?+¶ rB ,O< .$ &`*# 3? =)%¨@ r[*3 #N& =S< 6#?% .Z 6FÇ 6Fm1 ,$ C? JZ*3 &49 JÇ 6#V6 E#1 ,$ 6#;<@ "#l& &'& (Ê*3 #U1 LO, 6#$*# &9% 6#4 6F:* &%* =H_*3 &b1 =)%+ *#b,+ &b1 &%>? &49 ,-*#@ 5} kŽk r[*3 *3#^ FÊ*3 &%,,?*6 &$*3 *#? L9% &#% >w =N&+ >w #? .$, 3-o ,$ *:* .$ Ñ#2 nv<`< 6#d&# 6)< L9% .)< E#`< 6#? *#H CD2o@ •

•

47

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

,•^ e_•W \W†} o` e… k_fŒk \x\n ^XZ /#b* *$2 =K &DE =T* *#U*3 J#'< *?*&2 7*Ø?&6<%*+ .?9J?> 9(L6F9&6<%* ¶ ˆ:* &)*# =B .$ *#U*3 ,'*# J#B?+ J^ *]*3 &%>?+ >?(13 C$ *#U*3 ._< J#12:* =X *m*3 &9% J#` *]*3 J^ 6#1D6@ k% LÈ >É*3 *#
48

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

1(39- 3) +7 M T! -G*+ ,T, *+&':* 3½ 1(39- ;« 56¾ 5")*" 34! 567*" 89:* ,(-. ¹,C*+º 8F%*3 c1' 6F-*# #N&+ #b1 *#H &'& ()* L<*# C<:* =K1 =HI& #N& ,56 Lj J#'< *)2 J#' FÛ F$*3 C$ #b1 *#H *#U*3 (1Â< E#Y*3 CV* *$% &Z*3 &B *#U*3 &m1 #Y< .<:* c19* =T* &#l*3@ P- Ú J#'< *?C?.%E?F+ Fl6 F9 6[ #$*3 *3$* >M '* 6#$*# &;*3 C$ 6#V6 ()<@ 56 EF%Ø?&6 'E >É*3 *#U*3 *312:* .Ë *$2 Lh &B &%>? >w =N&+ >w 6?L6+ FÛ F$*3 #W*@ "#l*3 &S* 3? C$ LÈ9 &#U9 >w #W* FV6 *#? &#Ä &#É*3 &#l*3 6F%*3 C? Lh 3)2 ,-*# 6#To@ †J+ ¥{ E#l6 c1`*3 &'% =Á c19+ (m2 3<_ =T* E#b* 3É*3 *#? §&i*3¨@ rÒ9 6#;<+ *B .$ 6DE #IE × *312:* 6\& L91 =m2´ 1<*3.? F?LE%*L<(<.<62 EF<*& EF<*&
• • • •

49

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

-?E?*>?*&2 <*C?FL<%* EF<*&1*3 *312:* .Ë´ 56 &.9LL &#Ä *:* 312 *#V6 n"#Ä &B 6#X 6#92 =Â< &.9LL C- ,56 .Ë >% >12 *#V6o rX #É CO< ¥ &.9LL C< E#), *312:* .Ë@ 89 &B ¥ &.9LL !"#$%&'()(*"%  *#H L91´ •

!"#$%& &$()) *+!,-./(0(1+-23 4 !"#$%& 5,%6 *+(67(.(8-,97:23; !"#$%& 5,%6 <-,&+))7(.(23; !"#$%& 5,%6 <-%0.*+!,-.23; =

".9LL *$2 3U .969(9L?+ xÈ .Ë >U .969(9L? #%Ã& 6#92 =Â< &'&# x1V6 JT6 c1`+ ¶ 69 Lh E#`< LÈ9 =Â< &.9LL *$2@ "$*3 CK L91 &.9LL Lh &$*3 E#-*# 6% F9@ 8#?% =l*3 *312:* .Ë+ 69 E#`< 6'&# &.9LL *$2 F9 .$, ¹ &.9LL F<:*3@ 812 Lj .HI*3 &.9LL *#1*3 *312:* .Ë´ "B 6#X 6#%`< ,'< ,G F5*3 ¥ &.9LL+ *#H*3 J#;*3 =HI& LÈ9 =Â< (:* 6F%*3 &.9LL =B n%E?* Ð%F ?x6?*L<%* (16 &.%L?> Ð%F ,%><Ð<&96<%*o@ 8#?% *312:* .Ë *$2+ ,s< J#< 69 ,1j* 6#:, &#i& *]*3+@@ &#% &#HW*3 6F-*#+ &#l*3 69 *:* C
!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

§£ 3WqeZo 1fwqkWkfkWZ\ !lW\^W‚|ƒ Q312:* .Ë 6#i (9+ 6HW*3 i*3 CO< &#U 3 6F%*3 u†a7k@ Q5< >1*3 *312:* .Ë´ 8F%*3 ,56 &#HW*3 6F-*#+ &'& %(Ø?&6 &49 &.9LL &%* &B 6#X 6#92 6#T &.9LL ,$ J#;*3 .$, 6#92 =Â< 6d*# =l*3 =\* &49 &#HW*3 6F-*# 0W< J#B #1*3 *312:* .Ë´ 8#92 C- >Ò*3 ,56 <*6?FÐ9&? .O*+ 69 *:* 6'&# 6#$*# *#w #L@ PH 6#[9 C- ¥ &.9LL J#;*3 &b* >Ò*3 #T6 ¥{{ ,?6#%>@ g#< 6'&# <*6?FÐ9&? F9 6#$*# *# .<:* c19* 6O< *#91+ Cw #W*@ ±£ -ƒ‚ƒ\vƒ\^g 9\oƒlqWZ\ !lW\^W‚|ƒ Q312:* .Ë &1j< &Ò*3+ 6HW*3 i*3 CO< &#U -  6F%*3 u†a7k@ Q5< >1*3 *312:* .Ë´ ¥@ "'& ,%>1.? &VE &9% J#;*3 *:* E#É 6#15& C$% &'& ,%>1.? &VE 6#VE@ "` z *:* E#É 6#15& C$% 9(L6F9&6<%*@ z@ 7*6?FÐ9&? n9(L6F9&6<%*o J#;*3 *:* E#É 6#15& C$% &#< 6É 6#M& 6T@ "#l*3 69 =K1 (
!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

>% =B 69 &B 6#X 6#92 6#T =t* 6FS* (Ê*3 =t* #1Ó*# c19*3 &#% *#91 ,56 &'&# >w >$*3@ ¢ =m2+ <*6?FÐ9&? &#d*# .$ =1;< 6FS*+ <,E.?,?*696<%* .$ (B*3 =t* 6FS* C$ (B*3 =t* #1Ó*# c19*3@ 89 &B 6#X X* =Â< >w >$*3 3? &Z*3 CD2+ J#< 'E >É*3 k?E?*>?*&2 7*C?FL<%*+ 69 &#Ä &b* c19* 6m, 6O< <*6?FÐ9&?@ rX JT6 *j< 6O< >969(9L?+ 69 &#Ä &b* 3N< #$, v?6+ u9C? ¶ &49 7*6?FÐ9&? ;<(&(=>>"??@ g#< 6#92 =Â< >969(9L?+ 69 &#Ä &b* 6#92 <,E.?,?*696<%* &49 <*6?FÐ9&? *$2@ -*# *B< J^ CK *312:* .d *$2 C- *B J#' c19* 6FN*3@ QB .$ 6?*&2 7*Ø?&6<%* C$ 7*C?FL<%* %Ð "%*6F%.+ #9< J#'< *Ò*3 FV6 E#Â (
52

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

-.!.*-.*,' 9*.,59(* 8) 9*8.619(* (¬ ,(*56(3 Q#H =Á *B< G ($< 6FHO&+ k?E?*>?*&2 7*Ø?&6<%* nk7o C$ 7*C?FL<%* %Ð "%*6F%. n7%"o .$ #9< J#'< *É*3 *#H*3 J#;*3 #w #?*&2 7*Ø?&6<%*@ "'& ()* Ø1*<%F *:* =N& 6#È C- k7 =HI& 'E >É*3 FV6 *#É*3 >%9*# *3#Ò*3 6[ ,%>1.?@ 8F%*3 6#M& 6T+ ,%>1.? *$2 &B 6#X .$ ¥ EF%Ø?&6+ ¥ Ð<.? >..+ #%Ã& ,56 L?FC<&?@ rX >w #1.? .$ ,56 &.9LL *#y@ *_Ž^ |[W eW’\ k_r^ 8FHO& J#< (\6 =b1 CO< k?E?*>?*&2 7*Ø?&6<%*+ &'& ()* #Á2 =N& .)< ($< C?@ Q312:* .Ë &1j< &Ò*3 6F%*3 u†a7k &#d*# .$ k?E?*>?*&2 7*C?FL<%*´ ¥@ "'& ,%>1.? &VE &9% J#;*3 *:* E#É 6#15& C$% &'& ,%>1.?L &VE 6#VE@ "` z *:* E#É 6#15& C$% 9(L6F9&6<%*@ z@ 7*6?FÐ9&? n9(L6F9&6<%*o J#;*3 *:* E#É 6#15& C$% &#< 6? 6#;*3 6#H_*3+ &'& ,%>1.? &VE &9% Lh 3N< &'& ,%>1.? &VE 6#VE@ %>1.? &VE &9% Lh E#É 6#15& C$ ,%>1.? &VE 6#VE+ =?E?*>?*&2@ g#< ,%>1.? &VE 6#VE 6#92 =Â<+ ,%>1.? &VE &9% E#`< 6#92 =Â< 6#?%@ 56 6#92 =Â< Lh Jy% 6#?% #$*3 .%)6 6#92 =Â<+ 3<`, J#` *]*3 (`% 6F- &49 &%>?@

53

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

QT1 61m* 6#?% *312:* .Ë k?E?*>?*>2 7*C?FL<%*+ &'& ,%>1.? &Ò*3 E#É 6#15& C$% ¥ <*6?FÐ9&? J#;*3 =Â<@ 89 &B 6#X >w >$*3 6#92 6#T+ LÈ9 =Â< ,%>1.? &VE 6#VE ,$ J#;*3 `*# #HG*3 3- 6O< ,%>1.? &VE &9%@ ;¥\_ \n_…X o` e_•W \W†} -9 0?*&2 7*C?FL<%*+ 7*C?FL<%* %Ð "%*6F%. n7%"o+ k?E?*>?*&2 7*Ø?&6<%* nk7o@ ˆ9 J#'< *
54

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

uM J#'& (?@ 9\oƒlqWZ\ Zˆ ,Z\klZ|´ rm2 .$ ,56 >?L<3* E966?F* =HI& 6)% F9 =X &%>? &B 6#X 61m* 6#4 *312:* .Ë k?E?*>?*&2 7*C?FL<%*@ "B *#?*&2 7*Ø?&6<%* .$ ,56 6F%*3 &'& &'&# =B@ -ƒ‚ƒ\vƒ\^g 9\®ƒ^kWZ\´ rm2 .$ ,56 &'&# =X #?L<3* E966?F* F<:*3 &Z*3 =HI&o@ "'& ,%>1.? E#É 6#15& n>?E?*>?*&2o Lh =HI& <*Ø?&6 C$% ,%>1.? &VE &9%@ g#< *B< 6O< k7+ =9 E#b* .$ *B< 6O< k?E?>?*&2 7*Ø?&6<%*@ 0É*3 k?E?*>?*&2 7*Ø?&6<%* C$% &%>?+ 612 *#<:* CÅ* &B 6#X 3N< &#l*3 .$ 7%" "%*69<*?F+ Ë *3#^9 6HW*3 6M *#91@ "B 6#X #?*&2 7*Ø?&6<%* ,56 &'&# =W* 3<`* *#H L91´ ¥@ "'& ,%>1.? J#;*3 3<9% 61.? &VE 6#VE Lh <,E.?,?*6 <*6?FÐ9&?+ ,%>1.? &VE &9% Lh 3N< ,%>1.? &VE 6#VE@ Pd >É´ rX 3<9% 6969(9L?+ 69 &B <*6?FÐ9&? ;<(&(@(?"+ &'& ,%>1.? &VE 6#VE .$ 2'A<(&(@(?"0 BCA<(&(@(?"@ %>1.? &VE &9% .$ 6/?&$5"%-/?3)"?? Lh LÈ >É*3 <*6?FÐ9&? ;<(&(@(?"@ z@ P1.? &VE 6#VE Lh >% k7 "%*69<*?F 6#M& #É´ 8F%*3 ,%>1.? 6/?&$5"%-/?3)"??+ 69 Lh J#;*3 J#G< 6)% ;<(&(@(?" D@ E )"F 2'A<(&(@(?"GH+ C% k7 "%*69<*?F 6#M& #1.? 6/?&$5"%-/?3)"?? Lh J#;*3 (1.?  2'A<(&(@(?" #92 BCA<(&(@(?"@ ¹@ P1.? *$% 3\* CO< <*6?FÐ9&? *$% Lh =HI& 6#? #%Ã& 6F%*3 Ð<.? ·a@ Ú@ k7 =HI& >Ò*3 =X .$, 3<`, LM E#É 6#15& 31.?+ >w >$*3 #W* 6F%*3 C1.?+ (`% 6F- &%>? C$ 6?L6<*3@ ,•^ v[\n -9 "B ¹ >)*3 k?E?*>?*&2 7*Ø?&6<%*´ •

•

•

55

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

•

•

•

,Z\qklf^kZl 9\®ƒ^kWZ\´ "'& >?E?*>?*&2 Lh =HI& &%*69<*?F 6F12K* C$% n<*Ø?&6 C$%o ¥ &.9LL 6#;*3 c19 &%*L6F1&6%F &49 &.9LL =B@ rm2 .$ &'&# 6#;*3 >É*3 *#V6@ 1ƒkkƒl 9\®ƒ^kWZ\´ "'& >?E?*>?*&2 Lh =HI& 6F12K* C$% ¥ &.9LL 6#;*3 c19 &'& #$, u?66?F@ 9\kƒlˆX^ƒ 9\®ƒ^kWZ\´ ".9LL &b* <*Ø?&6 Lh <,E.?,?*6 ¥ <*6?FÐ9&?@ 7*6?FÐ9&? *$2 &#i9 ¥ #$, 6:* ;)I">& @ "%*69<*?F Lh <*Ø?&6<%* >?E?*>?*&2 C$% ¥ &.9LL 6#;*3 c19 C&  &49 <*6?FÐ9&? =B@ rm2 .$ &'&# FH_, F$ C$ d6 =HI& LÈ >É*3 *#V6@

Rf YWš} o` e_fg’k YWš} ^X -9 k^ *#<:*+ k7 J#;*3 E#`< C)* *]*3+ *B &Z*3 &B *#U*3 H1 =% =B J#;*3 E#`< EF%Ø?&6 *$% &Z*3 *:* 'E >É*3 k7@ PO< *#U*3 >M '* .O*+ &%>? *#É*3 k7 =X =`, (`% &%>? >w (`% 6F-+ >w 6#92 =Â<@ P- CD2+ (`* 6#m* &'& ÐF9,?Ñ%FJ *Â< 6É*3 k7 &%*69<*?F 6[ 6#H C
56

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

Rf YWš}

/_fg’k YWš}

v<`, LM JT6 >d*# 31.? "%>? >w (`% 6F-+ >w 6#92 6#T ,%>1.? …V6 >w 6?L6 C$ C$*3 6#V2 c19* #A 31.? nP- &'& >?E?*>?*&2 =K1 =HI& <*Ø?&6 C$% &%*L6F1&6%Fo

g#'< *?C?.%E?F ,O< Lh 3ÃE J#B J#]* J#< #N& uÈ >É*3 <*6?FÐ9&? *:* =;< J#< Lh J#B >?(13+ >% J#;*3 (1.? *$% =HI& 3N< "'& %(Ø?&6 =HI& J#G< 6)% 6%$* (5 *392 6[ =b1+ &B 6#X .$, 3<`, E?FÐ%F,9*&? a$, 6]*3 =5 E#i& 6)E &49 &%>?

ˆ$< CÉ*3 k7 *#H 6#T *$% C$% &%>? &Z*3 =[*3 .%@ ¢ E#b* z ,-*# Lh (Â L1*3 &%>? ,<*# #N9+ &'& ()* =N& x%*3 c192 .)< =N& ($< *$2 Lh >w §6#;*3¨ #W*@

57

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

?0 /0! ;« 56¾ 5")*" ¹,V( 5"¿º 56(*+ 89F, ¬9A ?&+ -*# 6[*3 &B ($< C?(13@ ˆ$< C?(13 C$ =Ã6 &m1 #Y< #?C?.%E?F C$ ’e n6?L6?Fo .$ JÇ 6#Ò J#;*3 =5< 6F_<
*3+ ,56 (:* F'*3 3?C C$ ’e =K1 &B JÇ 6#Ò
*3 .$ (13@ 8#T ,O< &B &m1 A* FÊ*3´ 56 &#$*3 >?C?.%E?F 3ÃE E#`< &%* (13 FV6 J#;*+ .l& Æ* .l& #\6 3V1 =< &#W< *:* 3V1 (Y =< 6#?% *3H_< J#'&@ ~V6 #D*+ &#$*3 *3È9 ,Ã6 .:* 6F_< 6#9* §8F_< =Á L<*# >?C L9% &S* L<*# (13¨+ L91 =B #5& ,'1 ,$ &#T6@ 8#1G ,O< #N& .DE 6F-*#+ &#l*3 69 6#H_*3 *3#^ FÊ*3 &%>? .$ A* J#B+ LÈ9 .s< .$ A* >w@ ˆ\6 =b1 .DE 6F-*# ,O< (?(13 =;< J#< &S* *#?@ 8#T *#H*3+ 6FH_*3 =)< #N& .)< &#Ä #HO*3 >Å* #N& L<*# C? &#i J#;*3 (9% 3<_ &'&# >?(13@ rÅ* 6O< CHO<+ ,-*# Lh &#<9 LÇ *#U*3 (d JdE 6-, .s< 6[ LW &VE =T* &9% &VE+ &Ò*3 *#U*3 =
9

 Xem l5i bài “th6c trang h#c l) p trình c1a các sinh viên”

58

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

?€ eW’‚ qŸ ^ª‚ M 3ÁW ^‹ ‚_•‚ rm2 .$ &'& .s< #92 3ÃE J#< ,O< #N& .DE 6F-*#+ CV1 (Ê*3+ 6#Ò*3 7k xR* nP<%+ &.? *#? .m1 Lh #T6@ ˆ)* &B 6#X 6DE ,56 Lj 6#B< c1?* *#H´ g#< ,G *3%Ã& *#O =B*3 *3%Ã&+ &1j< &m1 .A*# E#`< 6#:, &#V, E#Æ2@ ?€ eW’‚ klf\n ^ª‚ M .z^ƒ‚kWZ\ u91 J#< LÈ9 &'& .s< &l E#'E+ &#HW*3 6F-*# =Á (1<.> =HI&+ *#H*3 J#< &#)2 .)< &F9L# #%Ã& c1]*3 x&?E6<%*@ x&?E6<%* #92 3ÃE *#V6 .$ J/KK:$3)&"%LM>"#&3$)+ J#< ()* ,1j* 6F12 &DE C$% ,56 (É+ .s< ,$ ()* *$% &Z*3 3ÃE J#< ,O< #N& .$ C
"'& .s< *$2 6#H_*3 J#B LÈ9 C- ()* J#;*3 ()*3 *$2+ 6FHO& 6<:* ()* &b* x'& =R*#´ ¥@ "%>? &49 ,-*# Lh &#)2 &'& (HO& *$%+ 3N< *#U*3 #$, *$% z@ gT6 c1` =l*3 ,$ &'& #$, *:* 6F` CK .$ 3¹@ gT6 c1` 6#M& LM &'& #$, 6F` CK .$ 3Ú@ gT6 c1` *$% (R L9
59

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

QT1 &#H9 c1?* >?(13+ #Á2 <* F9 6%$* (5 &'& 3<' 6FR C$ JS*3 .A*# C$ JÒ*3 =T* &'&# &1j< &Ò*3´ P'& =< #Y<@ 5`\ œfgš\ M 3`} qXZ Yk ^xf _–W }k ^•^_ _W†f œf›~ rb1 6<:*+ #Á2 =Ã6 ,-*# C$% CR 6Fd *3H_< =HI& #Y<+ .? J#;*3 &#)2 =HI&pp 8#'*# &Z*3 &#` #? &49 ()* 6)< L9% .)< J#;*3 &#)2 =HI&@ a$, FÛ =? 3m2 .s< .:*@ 0Á2 6DE 6#B< c1?* *$2 6FHO& J#< =< #Y<´ ·'& =R*# =%)* &%>? 3m2 (13 Ff< 6'&# F<:*3 *B F9+ &j 3\*3 6'< 6)% .)< (13@ P? 3m2 (13 .$ =Á 3<`< c12T6 ×{Ï CV* =K Ff<+ &B J#< x'& =R*# x%*3 .$ ()* LÈ9 =HI& (13 .1;* Ff<+ &#Ì*3 &b* E#`< =< #Y< *U9@ 0Á2 *#O ,56 =?(13 &Z*3 *#H J^ *]*3 &%>? =K1 &b* &B 6#_< 3<9* Ft* .12A* ,O< &B 6#X 6#$*# 6#É&@ k% =B+ =[*3 (1f* #92 *`* .S*3 J#< ()* 6j* c1' *#b* C$ *#9*# #W* 6#;<@ Q#O *#y+ E#`< 6#H_*3 x12:* .12A* 6DE &%>? C$ 6M >?(13 6#,O< *m*3 &9% =HI& J#` *]*3 &%>? .Å* J^ *]*3 >?(13 *#y@ rÁ *B< G E#b* 6F:* Ff<+ *#H*3 ,-*# CÅ* *#\& .)< 6#:, .b* *U9@ 8#92 C&i 3ÃE J#B J#]* .$ C'& =< #Y< .1*3 61*3+ *#O v%%3.? Î .b* 6FHO& J#< #Y<@ PK .m1 >$<+ C?(13 &49 ()* =V2@

60

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

r[*3 =X 6O< .l& =< .$,+ &i (d .$ E#`< .:* ½9&?(%%J #Y< #%Ã& c192 L9*3 #Y< =f*3 *3#
5} kŽk r9 E#b* &'& ()* L<*# C<:* 6#H_*3 6#?(13  8-, C$ LÈ9 .s< 6F%*3 &%>? &49 ,-*# v%%3.? C$ u69&J%C?FÐ.%Ñ .$ ()* 6#m* 6#É*3 >?(133?F 6F%*3 *3;* *3U .DE 6F-*# &49 ,-*# g^ *]*3 >?(13 &Z*3 *#H J^ *]*3 &%>?+ &b* 6#_< 3<9* Ft* .12A* ,O< 3
•

•

•

61

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

!"K* § M /0 12 ,(-. -#( /#b* *$2 .$ *#U*3 &m1 A*+ 6F`< *3#
62

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

5#$ ?9F5 V1Â9+ M ;—9 -Ã*+ 5<$ 12 ,¿V ,")*+ &*9(6 -.8.3(!.6 Q3$2 Ú 6#'*3 ß *], z{¥×+ ,-*# &#d*# 6#i& *3#Ä C1 #N& z *], G ~g 6)< =)< #N& a9*&9L6?F@ ˆ$< CS*3 6m, LM JX CK ,56 *], .$, C?F E#Y*3 CV* 6O< 6D* #W* ,56 6 n08a+ "uu+ ¾9C9L&F?C?.%E?Fq§@ u91 *$2+ ,-*# ,O< (?C?.%E?F &Ò*3 6?9, #HO*3 >Å* &$< =Ã6 ,'2+ &#Ä &#s ]* 1j*3 n";*3 62 eLÑ<3 &B #A

63

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

6#j*3 (1>>2+ *3H_< ,O< 3<9 *#DE Lh =HI& §(1>>2¨ #HO*3 >Å* C$ 3?F >\6 =< ]* 6FH9 ,w .\,+ 9< (9% ,-*# ]* .$ ,-*# 6#HW*3 .É*3 61 #N& CK #%Ã& E#'6 m, *#H 3b* 6DE 6#$*# 6#B< c1?* C$ 6#d&# *3#< =HI&@ -*# .)< *3f< *392 =j< >', #% #? *#', C$% L<,E.?EF%3F9,,?F@&%,+ L69&J%C?FÐ.%Ñ@&%,+ &%>?EF%Ø?&6@&%,+ 6% <><&%>?>9%@&%,+ ¶ -*# =HI& C$% 6?9, ½%1*>96<%*+ ,56 6?9, .% CÉ*3 J#'& &49 &;*3 62@ /#9L? ¥ &49 >M '* J#;*3 6#$*# &;*3 .\,+ C$ 9*# 0@ =Á E#`< &B ,56 c12T6 =R*# =91 6#HW*3 C$ 6'% ()%´ rDE *312:* E#9L? ¥+ .$, E#9L? z .)< 6[ =b1@ 8?9, (9* =b1 &B ¹ *3H_<+ CK L91 6#:, =HI& ¥ *3H_< *U9 .$ Ú@ Q#_ J#` *]*3 J^ 6#1D6 x1V6 &#l*3 &49 &'& 6#$*# C<:* &5*3 CO< J#` *]*3 &#y, 3?F+ >M '* =Á §6),¨ 6#$*# &;*3 ,^ ,Á*@ +WžX k_•\n °”Q´L± M ,Z}‚X\g klW‚t 5_•W 3X\ oÆg n]W s< *], &;*3 62 6Â &#i& &%,E9*2 6FM '* J#' (y% (G CK &#% 6?9, ,9*3 6:* ".9<,(%%J@ e*# uW*  6#$*# C<:* 6#i Ú &49 6?9, .)< c12T6 =R*# *3#Ä C
64

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

e*# uW* .$ &M1 L<*# C<:* J<:, 6FI 3<`*3 6FH_*3 ˆ'&# g#%9@ g#` *]*3 J^ 6#1D6 &49 9*# &Z*3 FV6 J#'+ *#H*3 .l& *$% 9*# &Z*3 (`%´ "Í 9*# &#Ä .$ &\& Jy G ˆg 6#;<@ -*# *#4 6#b,´ "\& Jy G ˆg ,$ &Í *$2+ >m* ˆg &#\& 3#: 3O, .\,@ 8O< .l& 6#V2 Â*3 J#%? (Ê*3 vM*3 6%$* (5 ÑM '* ".9<,(%%J@ rl*3 .$ .$, L1E?F Ø1*<%F *B J#Â 6#T@ 56 .b* *U9+ 9*# 0@ .)< 6Y9 L'*3 CO< J#` *]*3 *3%)< 3<9% &49 ,-*#@ e*# =Á §.;< Jy%¨ =HI& ,56 ('& 8?&#*<&9. a?9> C$ z >?C?.%E?F ,O< C$% 6?9,@ e*# &S* >É >s =HI& 6?9, >?L<3*?F 6#9, 3<9 C$% c1' 6F-*# 6#M '*@ a?9>?F 8?9, k?L<3*?F .$ 9*# uW* r%$*  *3H_< 2:1 &49 e>F<9* e*# 81V*@ 8F;*3 9*# uW* =ÜE 6F9< C$ ,9*.2 #W* ;*3 8?9, a?9>?F &49 ,-*# &` &#É& .b*@ u1j6 z 6#'*3 6F_<+ &` *#B, >f* #T6 6m, Li& .$, EF%6%62E? &#% >M '* ".9<,(%%J@ 8?9, &Z*3 6Â* 6#V6 J#' *# >% 6#'< =5 .$, CM '* &Z*3 (R 6#92 =Â< x%$*# x%)&# 6#?% 2:1 &b1 &49 J#'&# #$*3+ 6?9, ,-*# &Z*3 *3)< J#;*3 >', .<:* #A .)< CO< 6?9, >?L<3*?F C- LI (R &#È< >% 6M Ë LÈ9 .1*3 61*3 >?L<3* &49 #N@ 8#92 ,Ã6 9*# 0@+ x<* 3È< ._< &`, W* =T* 9*# uW* r%$* =ÜE 6F9<+ &Ò*3 6%$* 6#X &'& ()* 6F%*3 6?9, >?L<3*?F =Á 3BE E#b* C$% 6#$*# &;*3 &49 >M '*@ 8#V2 6?9, ?, =HI& J#?* *#?F CK Ë =R*# =< >1 #N& C$% &1j< *], =X 6Ò J#' 6?F J#'

65

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

J#B xÈ J#< E#`< 3<`< 6#d&# CO< ,-*# FÊ*3´ k% L\E *3#Ä C?F n8#H >$< *:* ,-*# 6B, 6\6 *#yo´ "#$% #9< 9*#+ 9*# 0@ =Á &B &#<9 LÇ CO< ?, CK C% ,$ #9< 9*# =H9 F9 c12T6 =R*# *$2´ , &Z*3 #% L91´ ¶ P- CD2+ ?, ,%*3 #9< 9*# &B 6#X x?, .)< JT6 c1` /?FÐ%F,9*&? …?CM*3+ =[*3 C- &`, xl& *#V6 6#_< ,$ #$*# =5*3 *;*3 *Â< Ff< .$, ,V6 &` #9<@ Q392 &# C$ &#R u@ 9*93?F F4 =< &9Ð? *B< A* C$ &#<9 LÇ &#m* 6#$*#@ ab* =b1 ,-*# =HI& *#D* ._< x<* .s< &#m* 6#$*# &49 &VE 6F:* §C- =Á c1:* &%*L<>?F L12 *3#^ &49 ?, J#< =H9 F9 c12T6 =R*#§@ -*# &Z*3 =HI& *3#? &#R u@ 9*93?F &#<9 LÇ CK C?F C$ 9*93?F &#R1 (Y 6#_< 3<9* F9 3<`< 6#d&#+ &#<9 LÇ CO< Ø1*<%F *#H ,-*# &Z*3 .$, ,-*# &`, 6#V2 =HI& 6;* 6FN*3 FV6 *#
66

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

8O< #;, ¥¦ß¦z{¥×+ 6F%*3 &15& #NE 6%$* &;*3 62+ ,-*# =HI& 612:* >HW*3 C$ 6Ã*3 c1$ &#<9 692@ "#H9 ()* *$% F_< &;*3 62 .)< &B =HI& =Á< *35 *#H CD2@ -*# &Z*3 #3?6 &49 &;*3 62 &B #)*+ 9*# 0@ 8?9, a?9>?F C$ 9*# g@ 9*93?F E#`< 6Fd&# c1ä F<:*3 =X &B c1$ &#% ,-*#+ =X ,-*# &`, 6#V2 =HI& &%< 6FN*3+ &B 6#X *3Æ*3 &9% =b1 6M #$% J#< F_< J#Y< &;*3 62@ "`, W* 6-*# &`, C$ LM c19* 6m, ,$ z 9*# =Á >$*# &#% ?,@ n89< *3#? egv *3#? LHO*3 .\, &'& ()* )o@

/’k 0W* ,56 *], =Á c19+ (1f* C1< &Z*3 *#?+ 6#'< =5 &49 ,-*# &Z*3 6?F J#'&@ "`, W* &'& 9*# =Á *m*3 =Í ?, 6F:* c1Á*3 =H_*3 C[9 c19@ eu«7v+ #Ü* 3ÃE .)
67

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

3D9 ,&S9 1T," ’12X* L'&# *$2 .$ 6Â*3 #IE C$ (<:* 6DE &49 #W* Ý{ ($< C? k)%¥{@ QB J#;*3 &#Ä .$ 6#$*# c1` *s .M& &49 &#d*# ,-*#+ ,$ &S* .$ 6#$*# c1` &49 *#U*3 ()* =N& 6F1*3 6#$*# =Á 6#?% >Û<+ 3BE Ë &#% (.%3 *392 6[ *#U*3 *3$2 =b1 6#$*# .DE@ Q3$*# 78 *B<
*3 C$ *3$*# .DE 6F-*# *B< F<:*3 .$ ,56 *3$*# J#B+ =S< #Y< *#
3D9 ,=$ Ê* "#m* 6#$*# &`, W* 9*# rs g<, "W C$ (9* (<:* 6DE &49 8F< 8#i& 8FÇ ˆ%%JL =Á 3S*3 *#D* xy6 &#% &1j* L'&#@ "`, W* &'& 9*#¦&#R =f*3 *3#-1 >\6+ &#% ,-*# *#U*3 ($< #N& C$ J<*# *3#? >)% =Á .1;* =5*3 C<:* 3
 https://toidicodedao.com

68

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

+9=9 5"0," ,T, 5"&45 *+U "V' -Ë*+ Q3$*# 78 &B J#' *#É*3 *#É*3 *312:* C]* 6F%*3 ($< CÒ*3 =X ()* =N& >w 6F9 &i1@ nQT1 &B 6#_< 3<9*+ ,-*# J#12T* J#d&# &'& ()* 6F9 &i1 v%%3.? 6[*3 6#1D6 *3U =X 6-, #
5_fŒk \nž ^_fgh\ }u\ e/7´ P9*# L'&# *#U*3 &#i& *]*3+ >S*3 .A*# &B Læ* ,$ 69 &B 6#X LÈ >É*3@ ˆ13´ as< &49 E#b* ,K,@ ’1' 6F-*# 6-, .s< =HI& 3N< .$ >?(13@ uÈ9 .s< =HI& 3N< .$ д ’1' 6F-*# X* =Â< ,Á *31f* n&%>?o 6#$*# E#b* ,K, nL%Ð6Ñ9F?o "%>?¦u%1F&? "%>?´ Á *31f* &49 E#b* ,K,@ aDE 6F-*# C<:* C?F¦k?C?.%E?F´ 56 &'&# 3N< C1< &49 .DE 6F-*# C<:* "%,E16?F u&É*3 =X x<* CU .U ..<*?´ 0)* &#B6 =X #%$* 6#$*# ,56 >M '* #%Ã& L`* E#Æ, k?(13´ ’1' 6F-*# 6-, .s< 6F%*3 E#b* ,K, k?,%´ u`* E#Æ, &#H9 #%$* &#Ä*#@ g#< 69 *B< §>?,% &#% J#'&# #$*3¨ *3#^9 .$ 3?F´ aDE 6F-*# C<:*+ &S* 3N< 6\6 .$ >?C ½
•

•

•

• •

•

•

• • •

• •

69

!"# %&'() *+,( -./ #)0+ 1)2 3+4% 1567

•

•

• •

•

•

•

•

•

• •

• •

•

• •

•

½%F,´ ˆÒ*3 &B 6#X *#DE >U .M9 C$% =B =X E#'6 6FÉ*3 v<6´ 56 #A 6#j*3 c1`* .Ë ,Á *31f* E#b* ,K, a<(F9F2¦8#H C?+ &#i& *]*3 =Á =HI& CÉ*3 †8  †C?F6<,?´ "#Ä CM9 6#?% 6#Ò*3 =X ,; 6` E#b* ,K, &#% J#'&# #$*3 ’1%F9´ 56 6F9*3 #Y< ='E =HI& J#' *#?´ ’1' 6F-*# 6<*# &#Ä*# &%>?+ 3? 3N* *#Ü+ >w #w ,G F5*3 #W* …?c1É*3 «?(+ =m2 .$ *W< &#i9 i*3 >É*3 C$ &1*3 &VE >R&# CÉ u%Ð6Ñ9F?´ /#b* ,K, u%Ð6Ñ9F? *3Ò*3 6[ 6?&#*<&9. #W* 6[ §J^ 6#1D6¨@ 8?L6´ "#)2 6#È &#HW*3 6F-*#@ "'& 6?L6?F 6#H_*3 &#)2 6#È &#HW*3 6F-*# =X 6-, F9 (13@

$k qŠ \nu\ \nž |Œ‚ kl{\_ "Õ´ 56 *3;* *3U .DE 6F-*# =HI& <&F%L%Ð6 E#'6 6FÒ*3 =X .DE 6F-*# &'& i*3 >É*3 6F:* «<*>%ÑL #%Ã& i*3 >É*3 «?(+ i*3 >É*3 «<*>%Ñ /#%*?@ •

70