Question # 1

The central processing Unit (CPU) comprises of.

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memory, VDU , and printer

input device , output device and memory

store , arithmetic and logic unit and control unit

software, hardware and power supply unit

Is Secondary storage device

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CD-ROM

ROM

Cache

RAM

The basic operation performed by the computer is called

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arithmetic operation

logic operation

storage and retrieval operation

all of above

If a FORTRAN program begin with statement

INTEGER SALARY, PROFIT,LOSS

Then through the program integer variables will be represented by

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SALARY

PROFIT

LOSS

All of the above

Pointing devices are

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Mouse

Trackball

Touch Screen

All of the above

A computer can not do anything without

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programme

input device

output device

VDU

Logical addition refers to operation of

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OR gate

AND gate

NOT gate

invertr gate

Data processing is also called :

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Data computing

Information technology

Information system

Calculating

To make a personal computer act like a terminal, which type of software must be used?

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fax

videoconferencing

bridge

emulation

Who invented the modem?

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IBM

DEC

AT&T information System, USA

Apple computers Inc

Octal number system uses the digit 0 to 7. The equivalent of Octal 126 in decimal system is.

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80

82

86

84

The equipment attached to CPU which computer can access are called

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Hardware

input output devices

peripherals

computer components

_______ pointing devices has a vertical handle like a gearshift lever:

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Light pen

Pointing stick

Trackball

Joystick

Microwave transmission, coaxial cables, and fiber optics are examples of.

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modems

communication links

gateways

ring network

Which input device is often attached to laptop computers:

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trackball

inscriber

wand reader

graphic display

Memory capacity may be expressed in.

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microseconds

kilobytes

bits

cycles

The number of bytes in the following number (1111, 1011, 0111,0100,1010) is.

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5

2 1/2

10

1 2/4

Binary Coded decimal number express each decimal digit as

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binary digits

nibble

word

byte

What is the octal equivalent of the binary system :10111101.?

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675₈

275₈

572₈

573₈

Programming and testing are elements of.

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system analysis

system development

implementation

system design

A hard disk can be backed up efficiently using.

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WORM

a transaction file

a tape backup system

zoning

If electrical power supply to a computer system is inadvertently disrupted, the serious damage would occur to.

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CPU

disk

CRT

printer

Assuming 8 bit for data, 1 bit for parity, 1 start bit and 2 stop bits, the number of characters that 1200 BPS communication line can transmit.

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10 CPS

120 CPS

12 CPS

none of these

The presence of both data and its related instructions in an object is

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C++

encapsulation

orientation

inheritance

Boolean expression for NOR gate with two inputs x and y can be written as.

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x + y__

x. y

x + y

A parallel interface

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transmit one bit at a time

transmit one or more bits at a time using a single wire

transmit 8 or more bits at a time using as many wires

cannot be used to connect a printer to a PC

During E-time the ALU.

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examines the instruction

enters the instruction

executes the instruction

elicits the instruction

Following devices are used in simplex mode

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Radio

Television

a , b

Multiplexers

_______ is a photoelectric scanner that translate the barcode symbol into digital code.

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MICR

Barcode Reader

OCR

OMR

Communication between a computer and keyboard involes __________ transmission.

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Half duplex

Full-duplex

Simplex

Automatic

A device used for optical-character recognition is a.

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wand reader

light pen

mouse

MICR reader

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