Author Archives: Rana Tahir

which one is Digital device, select from the choices below?

A. Digital Clock
B. Automobile speed meter
C. Clock with a dial and two hands
D. All of them

Analog computer works on the supply of ?

A.Continuous electrical pulses
B.Electrical pulses but not continuous
C.Magnetic strength
D.None of the above

Which of the following are components of Central Processing Unit (CPU) ?

A. Arithmetic logic unit, Mouse
B. Arithmetic logic unit, Control unit
C. Arithmetic logic unit, Integrated Circuits
D. Control Unit, Monitor

What type of operating system MS-DOS is?

A. Command Line Interface
B. Graphical User Interface
C. Multitasking
D. Menu Driven Interface

A collection of system programs that controls and co-ordinates the overall operations of a computer system is called?

A. System software
B. Operating system
C. Utility program
D. Device driver

A light sensitive device that converts drawing, printed text or other images into digital form is?

A. Keyboard
B. Scanner
C. OMR
D. None of these