Revision Grade 4

Computer can understand only 0's and 1's.

• True

• False

The output that we get on a monitor is called

• Hardcopy

• Hardware

• Softcopy

• Software

A standard keyboard has______ keys

• 54

• 104

• 58

• 108

A _____________ is used only on CRT monitors

• Light pen

• mouse

• Joy stick

_________- printer works like a typewriter.

• Inkjet

• Laser

• Dot matrix

___________ is used to record our voice into a computer.

• Speakers

• Webcam

• Scanner

• Microphone