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righ ights ts re reserv rved. ed. T hi hiss material is i s p prrotected ed u unde nderr all cop opyr yrigh ightt laws as the they y c urr urren enttly exist st.. N o port po rtion ion of thi thiss material may be r rep eprrod odu uced, in a ny fo forrm or o r by any means, witho hout ut pe perrmi miss ssion ion in wr in wriiting by the pu p ubli lisshe herr. inciples and P usiive us usee of a dop urth For exclus doptters of of tthe b ook D h E di dittion, b y John F . Wake kerrly, D igit al D esign P r in P r ac act ices, F ourt ISBN 0 0-1 -13 3-18 -1863 6389-4. 89-4.
1.1
How about a pi ctur turee of J ohn not in in a tux tuxedo? edo?
© 2006 Pears rson on E ducation, I nc., U ppe pperr Saddle R iver, NJ . A ll
righ ights ts re reserv rved. ed. T hi hiss material is i s p prrotected ed u unde nderr all cop opyr yrigh ightt laws as the they y c urr urren enttly exist st.. N o port po rtion ion of thi thiss material may be r rep eprrod odu uced, in a ny fo forrm or o r by any means, witho hout ut pe perrmi miss ssion ion in wr in wriiting by the pu p ubli lisshe herr. inciples and P usiive us usee of a dop urth For exclus doptters of of tthe b ook D h E di dittion, b y John F . Wake kerrly, D igit al D esign P r in P r ac act ices, F ourt ISBN 0 0-1 -13 3-18 -1863 6389-4. 89-4.
1.2 1. 2
Three definit definition ionss of “ bit”:
(1) A binary digi digitt (pp. 1, 4 , 18 , 20, 22 22). ). (2) Past ten tensse of “bite” (p. 1). (3) A s sm mall a mo mou unt (pp. (pp. 6 6, 1 10 0).
© 2006 Pears rson on Education, Inc., Uppe pperr Saddle River, NJ. All
righ ights ts re reserv rved. ed. Thi hiss material is i s p prrotected ed u unde nderr all cop opyr yrigh ightt laws as the they y curr urren enttly exist st.. No port po rtion ion of thi thiss material may be r rep eprrod odu uced, in any fo forrm or o r by any means, witho hout ut pe perrmi miss ssion ion in wr in wriiting by the pu p ubli lisshe herr. inciples and P usiive us usee of adop urth For exclus doptters of of tthe book D h Edi dittion, by John F. Wake kerrly, D igit al D esign P r in P r ac act ices, Fourt ISBN 0 0-1 -13 3-18 -1863 6389-4. 89-4.
1.3 1. 3 ASIC
Application-Specific Integ egrrated Circuit
CAD
uteer-Aided Design Comp omput
CD
Compact Disc
CO
Cen entr tral Office
CPLD DIP DVD
Comple omplex x Prog ogrrammable Logic Device Dual In-line Pin Digi igittal Versatile Disc
FPGA
Field-Prog ogrrammable Gate Array
HDL
Hardware Descrip ipttion Lang ngu uage
IC
Integ egrrated Circuit
IP
Interne nett Protocol
LSI MCM
Large-Scale Integ egrration Multichip Mod odu ule
MSI
Medi ediu um-Scale Integ egrration
NRE
Non onrrecurr urring ing Enginee ngineerring
PBX
Private Branch Exchange
PCB
Prin intted-Circuit Board
PLD
Prog ogrrammable Logic Device
PWB
Prin intted-Wiring Board
SMT
Sur ace-Mount Technolog urf f ac hnology y
SSI VHDL VH DL VLSI
Small-Scale Integ egrration VHSI VH SIC C Hardware Descrip ipttion Lang ngu uage Very Large-Scale Integ egrration
rson on Education, Inc., Uppe pperr Saddle River, NJ. All righ ights ts re reserv rved. ed. Thi hiss material is i s p prrotected ed u unde nderr all Pears opyr yrigh ightt laws as the they y curr urren enttly exist st.. No port po rtion ion of thi thiss material may be r rep eprrod odu uced, in any fo forrm or o r by any means, cop witho hout ut pe perrmi miss ssion ion in wr in wriiting by the pu p ubli lisshe herr. inciples and P usiive us usee of adop urth doptters of of tthe book D D igit al D esign P r in P r ac act ices, Fourt h Edi dittion, by John F. Wake kerrly, For exclus 0-1 -13 3-18 -1863 6389-4. 89-4. ISBN 0 © 2006
1.4 ABEL
ngu uage Advanced Boolean Equation Lang
CMOS
uctor omplementtary Metal-Oxide Semicond ondu Complemen
DDPP JPEG MPEG
igittal Design Principle ipless and Practices Digi ointt Pho hottog ogrraphic Expe perts rts Group Join turee Expe perts rts Group Moving Pictur
hou ugh gh w wee us usee t thi hiss wo word hund ndrred edss of time t imess a w week eek whe w hetthe herr thing t hingss are OK o orr no nott, w wee have probably OK Altho rarel ely y wonde w onderred about its ts hi hist sto ory ry.. That hi hist sto ory is in f ac the he word being first first re recorded in act a brief one, t 39, tho ugh it w as no dou rship 183 18 hou doubt in c irculation befo eforre then. Much s cholars hip has been ex expended on t on the he origin iginss of OK, b ut Allen Walke lkerr Read has conclus usiivel ely y proved that OK is based on a sort of joke. prono onou unced ed t the he phr phrase “all c orr rreect” a s “oll (or (or orl) c orr rreect,” a nd nd t the he s same pers person on or someone Someone pr elsse s el spelled pelled it it “oll korr korreect,” w whi hich abb reviated giv gives us OK . T hi hiss term gained wide c urr urren ency by b eing used us ed a s a poli polittical slogan by the 1840 1840 Democratic candidate Ma rt rtin in Van B ur uren en, w who ho w w as nicknamed usee he w as born in K inde t he s s ame yeear, r refe inderrhook b he w inderrhook , New York. A n edit editorial of the me y eferrOld K inde b ecaus ring ing t to o t the he r reeceip eiptt of a the he s slog logan O .K., h ad t thi hiss commen ommentt: “f righ ighttf ul le lett tteers rs . . . . s signifi ignifi cant of a pin with t the birt rth-pl h-place of Mart rtin in Van Bur uren en, old Kinde inderrhook , as also t the he r rall lly ying ing w wo ord of the the Democracy of the the late election, ‘ all c orr rreect’ .... T ho hosse w who ho w weear them t hem s sho hou uld b ear in mind t mind th hat i itt will ill r req equ uire t thei heirr mo most st lectr oni onic Dict ion ionary stren str enu uous exert rtion ionss ... to make all thing hingss O.K.” [From the Amer ican H er it age E le ( AHED), cop opyr yrigh ightt 199 1992 2 by Hough ghtton Mifflin Company] itt’s “Practical E xtraction a nd R epo eport rt La ng ngu uage.” B ut the t he r rele elev vant Perl FAQ en entry try, PERL PE RL Acc According to some, i in per perlf aq1.pod, says “ne “nev ver wr wriite ‘PERL’, becaus usee pe perrl isn't reall lly y an acron ony ym, apocry ryph phal folklor folklore post-f -f ac ionss no notw twiithstanding nding.” .” (Thank s to to Anno Siegel for for enligh enlighttening me on t on thi hiss.) and post acto expansion
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rights reserved. T his material i s p rotected under all copyright laws as they c urrently exist. No po rtion of t this material m ay be reproduced, in any form o r by any means, without permission in writing by the p ublisher. inciples and P For exclusive use of a a dopters of the b ook D D igit al D esign P r in P r ac act ices, F ourth E dition, b y John F . Wakerly, ISBN 0-13-186389-4.
1.5 • Wrist watche hess and a larm clock s.
regi egist steers rs?? N o, t the hey y we were nev ne ver re reall lly y a nalog. Ra the herr, t the hey y we were electr tro-me o-me chanical digit digital syst system emss. • Cash r • Gasoline pu pump mpss.
oom s less. • Bathroom scale • The herrmome mometters and b lood-p lood-prressur ssuree gauge gess.
peedometters • Speedome rs.. • Ske kettche hess “d “drrawn” b y poli ce a rt rtiists sts..
g ree eetting ca rds. • Mus usiical gr
© 2006 Pears rson on E ducation, I nc., U ppe pperr Saddle R iver, NJ . A ll
righ ights ts re reserv rved. ed. T hi hiss material is i s p prrotected ed u unde nderr all cop opyr yrigh ightt laws as the they y c urr urren enttly exist st.. N o port po rtion ion of thi thiss material may be r rep eprrod odu uced, in a ny fo forrm or o r by any means, witho hout ut pe perrmi miss ssion ion in wr in wriiting by the pu p ubli lisshe herr. inciples and P usiive us usee of a dop urth For exclus doptters of of tthe b ook D h E di dittion, b y John F . Wake kerrly, D igit al D esign P r in P r ac act ices, F ourt ISBN 0 0-1 -13 3-18 -1863 6389-4. 89-4.
1.6 1. 6
The he s same f unction is is pe perrfo forrmed b y a s single ingle 2-inp -input ut OR gate.
© 2006 Pears rson on E ducation, I nc., U ppe pperr Saddle R iver, NJ . A ll
righ ights ts re reserv rved. ed. T hi hiss material is i s p prrotected ed u unde nderr all cop opyr yrigh ightt laws as the they y c urr urren enttly exist st.. N o port po rtion ion of thi thiss material may be r rep eprrod odu uced, in a ny fo forrm or o r by any means, witho hout ut pe perrmi miss ssion ion in wr in wriiting by the pu p ubli lisshe herr. inciples and P usiive us usee of a dop urth For exclus doptters of of tthe b ook D h E di dittion, b y John F . Wake kerrly, D igit al D esign P r in P r ac act ices, F ourt ISBN 0 0-1 -13 3-18 -1863 6389-4. 89-4.
1.7 1. 7
Never.
© 2006 Pears rson on E ducation, I nc., U ppe pperr Saddle R iver, NJ . A ll
righ ights ts re reserv rved. ed. T hi hiss material is i s p prrotected ed u unde nderr all cop opyr yrigh ightt laws as the they y c urr urren enttly exist st.. N o port po rtion ion of thi thiss material may be r rep eprrod odu uced, in a ny fo forrm or o r by any means, witho hout ut pe perrmi miss ssion ion in wr in wriiting by the pu p ubli lisshe herr. inciples and P usiive us usee of a dop urth For exclus doptters of of tthe b ook D h E di dittion, b y John F . Wake kerrly, D igit al D esign P r in P r ac act ices, F ourt ISBN 0 0-1 -13 3-18 -1863 6389-4. 89-4.
1.8
In my m y book , “dice” is i s the plur plural of “die.”
