Which of the following is used to scan pictures?
Scanner
Speaker
Joystick
Plotter
What controls almost all functions on a computer?
ALU
CPU
CU
PCU
What stores data and information temporarily?
Arithmetic and logic unit
Control unit
Memory unit
Power supply unit
Which is a device that is used for connecting the computer to Internet.
Modem
Motherboard
Hard disk
Which is the earliest calculating devices?
Abacus
Pascaline
Napier's Bones
Lebenitz Calculation
Peripheral device of a computer is otherwise known as
Hardware
Software
Which is known as the brain of computer?
Who invented Abacus?
Indians
Chinese
Americans
Japan
Which of the following is a secondary memory?
RAM
Data
ROM
What is called as the brain of a computer?
