Assignment of Fundamental of computer (Vicky)

Assignment (Fundamental)

Fundamental Assignment Assignment belongs to the book of “ICA Shine” institute.

Gadhia Vicky .K. 01-Aug-09


I N D E X

Chapter Chapter Chapter Chapter Chapter Chapter

1: 2: 3: 4: 5: 6:

Computer Era – An Introduction ------------------------------------- 1 Introduction about software ------------------------------------------- 3 About PC ------------------------------------------------------------------------- 6 Communication Communica tion Concept --------------------------------------------------- 8 Operating System & DOS --------------------------------------------- 10 Microsoft Windows XP Introduction Introduc tion --------------- 13


Chapter 1: Computer Era – An Introduction 1) What is Computer? A computer is a device that process given giv en data to derive the required & useful u seful information. The computer performs various function during the processing as follows: - Accepting data from user - Accepting instruction from user - Performing various arithmetic & logical operations as per the instruction - Presenting output or information to the user. 2) Describe various types of characteristics of computer. Characteristics: - Fastness: A powerful computer is capable of executing about 3 million calculations per second. - Accuracy: A computer is very accurate in its work. w ork. During process error seldom occur if there is an error in the instruction given by user. - Reliable: A computer is a reliable & trusted component that is the given instruction are true then the information will be true & correct. - Versatile: A computer is capable to generate desired output in desired d esired form & it is all the programming technique that makes the difference. It can work upon numbers, graphics, audio, video etc.., making it i t versatile. - Large storage capacity: A computer have many storage devices like Winchester W inchester disk, CD ROM, hard disk etc.., which have large storage s torage capacity. - Works automatically: A computer can work automatically without any human intervention until the completion of execution of program. But need of human operator to press the necessary keys for any operation is required. - Diligent: A computer is a machine, so it does not feel tired & distracted. d istracted. It performs consistent even to an extent of more than 10 million calculations. It does each & every calculation with the same speed & accuracy. 3) What is the storage devices present in computer? Storage devices: - Hard Disk - Winchester Disk - Compact Disk Drive 4) What is the Winchester Disk? A Winchester Disk is a storage device that is permanently housed in sealed container which is free any contamination. These were firstly used to provide backup to dual 30MB (30 ( 30 megabyte). 5) Describe briefly the basic operations of computer. 3 Basic Operations of computer: - Firstly access & accept information: Computer is capable to access & accept information through various input output devi ces from the user. - Arithmetic & logical operation: After accessing & accepting the information, the computer performs basic arithmetic & logical operations on the data. - Generate Output: At the final, computer is capable to generate the output in the desire form. Page | 1

Assignment (Fundamental) 6) Explain the characteristics of each generation’s computer. 1st generation: - The first electronic computer ENIAC - Invented in 1946 by an English mathematician “Charles Babbege”. - Capability to perform 5000 calculation per second. - Occupied about 1500 sq. ft. - Weighted about 50tonnes. - Vacuum tube technology. 2nd generation: - Transistors were use in place of vacuum tube. - Less area than 1 st generation’s computer. - More power consumption decrease. 3rd generation: - Compact Integrated Circuit of silicon chips. - Cost, heat generation & power consumption decrease. 4th generation: - Used integrated circuit with very large scale integration (VLSI) - High processing power - Low maintenance - Low power consumption - High reliability 5th generation: - Optic fiber technology - Very high processing speed - More reliable 7) What is micro computer? Give its advantages & disadvantages. Micro computer is a digital computer that works on o n micro processor. Mostly it is used in homes & offices & performs tasks such as word processing, desktop publishing & accounting. Advantages: - Small size - Low cost - Portability Limitations: - Low processing speed. 8) What is minicomputer? Give its advantages & disadvantages. Minicomputer is known as the mid-range server & it is medium sized, multi processing & multi user computer. Generally it is used by small sized companies. Advantages: - Cater to multiple user - Lower costs than mainframe Disadvantages: - Large - Bulky

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Assignment (Fundamental) 9) What is mainframe computer? Give its advantages & disadvantages. It is known as enterprise servers & it occupies o ccupies entire rooms or floors. It is used to centralize computing. Advantages: - It supports many users & instructions - Large memory Disadvantages: - High size - Expensive 10) What is super computer? Give its advantages & disadvantages. It is fastest & expensive & used by application for molecular chemistry, nuclear research, weather report & advanced physics. Advantages: - Speed Limitations: - Generate large amount of heat during d uring operation. Fill in the blanks: 1) The unprocessed facts, which are not arranged in any order, are collectively known as data. 2) Processing the collected facts, arranging them & giving them a meaningful shape is known as Information. 3) In spite of its high speed s peed of processing errors seldom occur is in Accuracy characteristics of computer. 4) The total capacity of floppy disk is 1.44 MB & rotation speed is 360 rpm. 5) The full form of CD-ROM is compact disk read only memory. 6) Computer performance is consistent even to an extent of more than 10million calculations. 7) In first generation computer used vacuum tube technology & machine language was the language of these computer. 8) The second generation computer developed in Transistor. 9) The 3rd generation computer use compact integrated circuits (ICs) of silicon chips, in place or transistor. 10) The fourth generation computers have High processing power, low maintenance, high reliability & Low power consumption.

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Chapter 2: Introduction about software 1) What is compiler? Compiler is the type of software that will accept the total program code as input & then converts it into machine code. 2) What is interpreter? Interpreter performing the same task as compiler, to convert the program code into the machine code but it is different di fferent from compiler. Compiler takes the complete program as input but an interpreter takes the program code line by line as input. 3) What is programming language? Programming language are the languages that to use for giving givi ng instruction which are followed by the computer to perform the requested task. 4) Give different names of programming languages. Different programming languages. - Machine language: These languages are machine dependent languages & the programs written in these languages are non portable. These languages are understood by machine directly as it consists of series of binary digits. - Assembly language: Assembly language is the first firs t step in program preparing process involved in replacing the numeric binary machine language operation codes with the mnemonic names. - High level language: High level languages are oriented towards certain specific processing problems which are application specific like mathematics problem, file processing, scientific application etc. High level languages are portable from computer to computer with slight variation. 5) What is algorithm & flow chart? Algorithm: It is a step by step procedure involved in solving any problem written in any simple & understandable human language. It is a text based solution. Flow chart: It is a graphic based solution, which using various graphical symbol, illustrate the basic flow of the program. 6) Draw a flow chart of adding 2 nos. START

INPUT A INPUT B

YES IF

PRINT A

A+B=

NO PRINT B

STOP

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Assignment (Fundamental) Fill in the Blanks: 1) Machine languages which are understood by the machine. 2) The program written in assembly language is called source program. 3) Object program is the converted program of a assembly language. 4) Interpreter is a special program/software which is used for translating a high level language program into machine language. 5) Algorithm is a step by step procedure involved in solving any problem. 6) Flow chart is a graphic based solution of solving any problem.

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Chapter 3: About PC 1) Major components of computer. Major Components

Hardware

Input

Output

- Keyboard

- Monitor

- Mouse

- Printer

- Scanner

- Speaker

Software

Machine Language

- Binary

High Level

Live ware

Firm Ware

User

Data safe in ROM

Language

- C++ - Oracle - Java

- Pointing Devices

2) Give the Basic Input Output devices of the computer. Input Devices:

Output Devices:

- Key board - Monitor - Mouse - Printer - Pointing device - Speaker etc… - Scanner etc…. 3) What are parts normally present in system case? Front side of computer: - Power switch to turn on/off computer - CD/DVD Drive ROM - Floppy drive & Hard disk - LED to indicate system status Back side of computer: - Switch Mode Power Supply (SMPS) & cooling fan - Input – output ports in built on motherboard - USB ports 4) Give the name of I/O ports present in the mother board. - Serial Port - LPT Printer port - Monitor port - Sound port - Joystick port - USB port 5) What are the main units of CPU? Memory Unit: - Primary memory (RAM / ROM) - Secondary memory

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Assignment (Fundamental) Control Unit: ALU: Arithmetic & Logical Unit. 6) Write the BIOS checking procedure at the time of booting a computer? Basic Input Output System (BIOS): - Check all peripheral devices, memory & hardware of the computer. - Power On Self Test (POST) is performed before the PC boots operating system. - Functions perform by POST. Checking power supply & mother board Comparing system configuration with PC configuration program Checking memory devices & drives Checking system memory Starts display & audio devices. 7) What are control unit & ALU in processor? Control Unit: Control unit is the unit of CPU, which coordinates all the activities of each & every elements of computer. This unit does not process data d ata but it acts as the central system for data manipulation. ALU: This unit performs the arithmetic operations such as addition, subtraction, s ubtraction, multiplication & division. It also does logical operations such as comparison of numbers etc. 8) Write down different types of storage devices. Different types of storage devices. - Magnetic device - Optical device - Solid state storage device - Digital audio tape 9) Which part of computer consider as primary memory? Random Access Memory (RAM) & Read Only Memory (ROM) 10) Write down different types of output devices. Variout output devices: - Display system, Display Card, Sound Card, Printer, Fax 11) What is a good example of firmware? The micro instrument on safe in ROM is called Firmware.

Fill in the Blanks: 1) Software is a set of instruction usually termed as programs which are required for processing activities of the computer. 2) Mouse is the input device specially used for GUI. 3) The system case, some times called the chassis/enclose. 4) 220 – 240 voltage is used in SMPS for asia. 5) ALU unit performs the arithmetic operations. 6) Power on Self Test (POST) is performed by BIOS. 7) Sound card is the type of Audio card. 8) 1 Gigabyte = 1024 Megabyte. 9) RAM is primary type of data storage. 10) A video card referred to as a graphic acceletor card.

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Chapter 4: Communication Concept 1) What is Data Communication? What are the different types of network? Data communication is a process of sending data electonicallyfrom one geographic location to other, which is clone usually by linking li nking these location using network. Types of network: - LAN (Local Area Network) - MAN (Metropolitan Area Network) - WAN (Wide Area Network) 2) What is difference between analog & digital dig ital data transmission? In analog data transmission the data is transmitted as a continuous wave from one terminal to other, while in the digital data transmission use distinct “ON” & “OFF” electricity states.

Analog

Digital

3) What is modulation & demodulation? Modulation: The process of converting digital data into analog data befor transmission in known as Modulation. Demodulation: The process of reconverting an analog signal into digital pulses i s called demodulation. 4) What are various communication devices? Various types of communication devices: - Interfaces - I/O ports & cables - LAN card - Modem - Network Cable 5) What are the components of NIC? A network card, network adepter, LAN adepter or Network Interface Card is a piece of computer hardware designed to allow computers to communicate over a computer network. Every card has a unique 48 bit serial number called a MAC (Media ( Media Access Control) address, which is stored in ROM carried on the card. 6) What are different types of transmission media? 2 types of transmission media: - Point to point: This is a quite simple channel configuration, where the units/ devices to be connected use dedicated communication line. - Multipoint: This configuration of communication channel has envolved to remove the short coming of point to point channel of under utilization & cost. 7) Compare the different type of transmission media.

-

Point 2 Point This is the simple configuration

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Multi Point - This is quite complex than the point 2 point

Assignment (Fundamental) -

Only one device can be connected with - Two or more device s can be connected direct line using a single line - This involves high cost as for every - This involves low cost than point 2 point connection connection - This need separate cable for every - This does not nedd separate cable for device. every device. 8) What does T mean in 100BaseT? T mean “Transmission” in 100BaseT 9) What do 100 mean in 100BaseT? 100 indicate the speed of transmission in 100BaseT. 10) What makes Fiber Optic Cables immune to EMI? The fiber optic cables are made from one or more filaments of glass fiber, whose thickness is hair thin are wrapped in protective jackets. These transmit data as pulses of light which are generated by lasers. The rate of transmission is about 30billion bits per second, which is about 60 times greater than co-axial cable & about 3000 times better than twister twis ter pair wire lines.. These characteristics makes fiber optic cables immune to EMI.

Fill in the Blanks: 1) Analog data is transmitted, as a continuous wave from one terminal to other. 2) Digital data transmission uses distinct “ON” & “OFF” electricity states. 3) The process of converting digital data before transmission into analog data is known as Modulation. 4) The process of reconveting an analog signal into digital pulses is i s called Demodulation. 5) Point 2 Point is established using direct lines which connect the devices to other devices. 6) 8P8C is short for Eight Positions, Eight Conductors . 7) Ethernet network card has a unique 48 bit serial number called a MAC Address. 8) The cover & insulation of the Co-axial cable minimizes interference & distortion of the signal. 9) In Fiber Optics cable transmit data as pulses of light which are generated by lasers. 10) USB full form is Universal Serial Bus .

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Chapter 5: Operating System & DOS 1) What is Operating System? Operating System can be def ined as “Set of programs that are capable of managing resources as well as the operations of a computer.” Operating system hides the hardware virtually from the user. 2) Give some examples of network based & server based operating system. Network based: Windows – 2000 / XP / 2003 Server based: Windows Server 2003, Unix, Linux, Netware. 3) Describe brifly the booting process of operating system. Booting Process: A process after which our system will load the operating system & which determine that our system will OK condition or not Types of Booting: - When machine ON, then it called COLD Booting. - When (ALT+CTRL+DELETE) / Reboot happens, it is called WARM / HOT Booting. Steps: - POST (Power On Self Test) - RAM Test - Drive Checking A: (Floppy Disk Drive) o o C: (Hard Disk Drive) - Kernel of DOS I/O Sys (System fill of DOS, to manage input & output system) o o MS – DOS.sys (System fill of DOS to manage, Processor Managemet Memory Management File Management Device Management) - Config.sys (user made file) - Command.com (command process of DOS) - Autoexec.bat (used made file) 4) Write the functions of Config.sys Functions of Config.sys: - BUFFERS (It is used to specify the disk buffer) - COUNTRY (It is used to specify s pecify the country code) - DEVICE (It is used to load to device program in memory) - DEVICEHIGH (It is used to load & replace the device command program in the high memory area) - DOS (It is used to replace device command program in high memory area) - Drive PRAM (Iis used to modify the disk & tape device) - FCBS (File control Block in used to specify the no. of file fi le to open at a time in DOS. It is actually data structure to store the information which is currently opened) - FILES (It is used to specify the no. of file to open at a time in DOS.sys) 







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5)

6)

7)

8)

- INSTALL (It is used to specify the the installation of TSR (Terminate & Stay Resident) program in high memory area) - LAST DRIVE (It is used to indicate you the valid device driver of your system) - NUMLOCK (It is used for ON/OFF system) - SETVER (It is used to set the variable and its value) - SHELL (It is used to load the user defined command processor) - STACKS (It is used to specify s pecify the stack in buffer no.) - SWITCHES (It is used to specify the keyboard specification) Which type of file type support by MS-DOS operating system? MS-DOS operating syster supports following types of file: - Text File: These are the files which are used to store s tore data. The data can be in the form of characters, numbers, & any other symbols. These are the files which are used to store input as well as output data of the programs. - Batch File: These are the files which contains set of instructions, which w hich are to be executed as a batch in a sequential order. These files are useally used u sed to perform a specific task. - Application Program Files: These are the files which usually as application specific. They are used to do perform specific tasks which will enble a use to do his job easily. Word processors, calculators, spread sheets etc. are some of the application program files. What is File & Directory? File: File is the collection of records, which are logically related. Directory: Directory is logical grouping of files. A directory contains the names of the files it holds, along with their extension, the file size, the data of creation or the data of last modification. Write purpose to used the command & their syntax. a) VOL: Display the lable of the volume in the drive dri ve specified. b) MD: Creates a sub Directory c) BATCH: To perform the specific task. d) PROMPT: To change the Prompt e) CHKDSK To check hard disk drive status f) FORMAT: To format a disk Give the tree structure of directory structure. C:\

DOS

WINDOWS SYSTEM

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VMM32

DESKTOP

TEMP

Assignment (Fundamental) 9) Write the utilities of the DOS. Apart from the files IBM bio.com, IBM dos.com, & command.com two other programs which are quite important part of MS.DOS are: - Config.sys: This is used to configure the system. - Autoexec.bat: This file contains the list of command which are to be executed when the system is started i.e. booted. Terminology which is used by MS-DOS. Fill in the Blanks: 1) Config.sys is used to configure the system. 2) Resident & Initialization part is present in the memory for DOS limit. 3) Dos is used to replace device command program in high memory area. 4) Transition part is loaded in the high memory area on the command.com 5) File is collection of records, which are logically related. 6) TYPE command displays the contents of the file on the screen. 7) BACKUP command application that enebles users to backup their data on their computer. 8) DISKCOMP command compares the contents of a floppy disk in the source drive to the contents of a floppy disk in the target drive. 9) XCOPY command copies the content of more than one directory at a time. 10) The filename can be at most Eight characters long.

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Chapter 6: Microsoft Windows XP Introduction 1) Which type of operating system is Windows XP? Windows XP is the client based GUI (Graphic User Interfaces) operating System. 2) What are the names of Windows XP Edition? Mainly there are two names of Windows XP Edition. - Windows XP Home Edition - Windows XP Professional Edition 3) How you delete the files permanently in WIN XP? Follows are the steps to delete the files permanently in WIN XP. Select the particular object by single click on it Press Shift + Delete on the keyboard Yes 4) Which are the components present in desktop? Following components present in desktop. - Taskbar - Icons - Start button - Date & Time 5) Why we configure outlook express? We configure outlook express to check, compose & send e-mails. e -mails. 6) Why we use icon? We uses icon for access the content that they represent. 7) What is the function of shortcut? Icon with an arrow in the lower left corner are shortcut icons. Function of shortcut i s quick access to the object. 8) Which software you use for internet browsing? For internet browsing usable software is INTERNET EXPLORER. 9) Write function of Recycle Bin. Recycle Bin Stores all temporary deleting objects. 10) Describe different types of serch procedure. These are different types of search critera. - All or part of the file (document) (docu ment) name: Enter the filename, the first few letter of the filename, f ilename, or any letters found in the file name. - A word or phrase in the file: If you are looking for a file fi le that has a specific word or phrase in the filename, enter the word or phrase in this search field. - Look In: Select the drive or folder you want w ant to search - Specify Dates: Select from modified, created, or last accessed. Select modified modifi ed to find all files modified since the date criteria you enter, select created to find all files created since si nce the date criteria you enter, or select last accessed to find all files accessed since si nce the date criteria you enter. P a g e | 13

Assignment (Fundamental) - Between/During the previous: Between allows you to search for files modified, created, or accessed between two dates. - Specify size: By specifying the approximate size of the file. - Other options: o Search system folder only Search hidden files & folder only o Search sub folder (include) o o Search in Tape Backup Search those files which are case sensitive o 11) Mention different types of views. Different types of views. - Thumbnails View: This displays images. - Icon View: This display icons to represent drives, folders, & the contents of folders. - Tiles View: This view is larger than the icon that display when you choose icon view. - List View: This displays all of the files & folders without supplying the size, type, or date modified. - Details View: This Display the size, type & date modified.

Fill in the blanks: 1) Icon are litte pictures that represent different programs or saved items. 2) In the lower left-hand corner of the Windows you click on the button a menu will appear, which we will call the Start Manu. 3) Windows XP tracks the last default 15 files you used. It lists these files on the Most Recently Used Document list. 4) Any letter found in the filename. Use the * as a Wild Card. 5) If there have multiple account on your system then there have a Switch User option, which provice you switching between two accounts without log off them. 6) All tasks which are currently on used are shown in the Taskbar. 7) To protect the monitor screen damage from continuous ejection of electron beam & avoid using unauthorized access by providing screen saver password protection . 8) A Web Browser is a program such as Netscape Communicator or Internet Explorer that allows you to surf the internet from a computer. 9) Press CTRL+ALT+DELETE will cause the computer to show a dialogue box that lists the current applications that are running on the computer.

THE – END

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Assignment of Fundamental of computer (Vicky)

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