Which one of the following is also known as system mode?
ROM
Modem
Motherboard
RAM
What controls almost all functions on a computer?
ALU
CPU
CU
PCU
Which of the following is a secondary memory?
Hard disk
Data
Which of the following do all the calculations?
Memory unit
None of these
Which device can record music, voice and sounds in the computer?
Scanner
Light pen
Microphone
Speaker
Who invented Abacus?
Indians
Chinese
Americans
Japan
Peripheral device of a computer is otherwise known as
Hardware
Software
Which among the following is an input device?
Monitor
Printer
Mouse
Which is known as the brain of computer?
Which of the following is used to scan pictures?
Joystick
Plotter
