WAEC Computer Science Past Questions & Answers - Page 68

336.

Which of the following is not a mobile input device?

A.

Joystick

B.

Light pen

C.

Mouse

D.

Scanner

Correct answer is D

No explanation has been provided for this answer.

337.

Output devices in a computer are those devices that send? 

A.

results to the memory of the computer

B.

processed data and instructions into the computer

C.

in data and instructions into the computer

D.

data and instructions into the memory of the computer

Correct answer is C

No explanation has been provided for this answer.

338.

The hardware of a computer does not consist of?  

A.

casing

B.

mouse

C.

peripherals

D.

windows

Correct answer is D

No explanation has been provided for this answer.

339.

The device through which the main components of the computer communicate with each other is called? 

A.

keyboard

B.

memory

C.

light pen

D.

system bus

Correct answer is B

No explanation has been provided for this answer.

340.

If the output signal of any logic gate is fed into an inverter, the results is? 

A.

NOT gate

B.

Nor gate

C.

the inverse of the output signal

D.

the same as the output signal

Correct answer is C

No explanation has been provided for this answer.