JAMB Computer Science Past Questions & Answers - Page 36

176.

What is the full form of CU?

A.

Compound Unit

B.

Communication Unit

C.

Computer unit

D.

Control unit

Correct answer is D

CU stands for control unit.
The control unit (CU) is a component of a computer's central processing unit (CPU) that directs the operation of the processor. A CU typically uses a binary decoder to convert coded instructions into timing and control signals that direct the operation of the other units (memory, arithmetic logic unit and input and output devices, etc.)

177.

Typically, an ATM is used for

A.

record keeping

B.

budget making

C.

watching movies

D.

withdrawing cash

Correct answer is D

An Automated Teller Machine, better known as an ATM, is a specialized computer that makes it convenient for bank account holders to manage their money. It allows them to check their account balances, withdraw or deposit money, transfer money from one account to another, print a statement of account transactions, and even purchase stamp

178.

Types of software programs are

A.

Application programs

B.

replicate programs

C.

Logical programs

D.

both A and B

Correct answer is D

both A and B

179.

Computer Monitor is also known as

A.

DVU

B.

UVD

C.

VDU

D.

CCTV

Correct answer is C

The computer monitor is a visual display Unit (VDU).A VDU displays images generated by a computer or other electronic device

180.

Which can be the input and output devices both?

A.

Scanner

B.

Touch screen monitor

C.

Speaker

D.

Digitizer

Correct answer is B

A touch screen monitor can be used to input data into the computer system and can also be used to receive output information