Basics of Computer

What can a computer do?

• accept & store data

• process data

• retrieve data & print results

• all of the above

ALU stands for ____________

• Application Logic Unit

• Array Logic Unit

• Arithmetic Logic Unit

• None of the above

What is known as the brain of the computer system?

• Memory Unit

• CPU

• ALU

• Control Unit

Which unit is used to store data and instructions?

• Memory Unit

• Arithmetic Logic Unit

• Central Processing Unit

• Control Unit

Which is the most widely used input device?

• Mouse

• Touchpad

• Joystick

• Keyboard

Which input device uses a light-sensitive detector to select objects on a computer screen?

• Pendrive

• Light pen

• Joystick

• Keyboard

Which input device is used for automatic data collection?

• Monitor

• Keyboard

• Scanner

• Mouse

Full form of OCR is ______________.

• Occasional Character Record

• Optical Character Record

• Optical Chart Revision

• Optical Character Recognition

_______ takes voice as input.

• Scanner

• Speaker

• Microphone

• Mouse

This pointing device is stationary and it does not require much space to use it.

• Track Ball

• Mouse

• Keyboard

• Monitor