Page 13 - KEC Khaitan C3 Flipbook
P. 13
The CU gets data and instructions from the memory unit and passes them on
to the ALU in a step-by-step manner.
Memory Unit (MU): It stores the instructions given by the input devices before
they are sent for processing. It also stores the result or the output before it is
sent to the user.
Central Processing Unit
Arithmetic Logic Unit
Input Devices Control Unit Output Devices
Memory Unit
1. Which device is known as the brain of a computer?
uiz Bee ______________________________________________
2. What is the use of a keyboard?
______________________________________________
OUTPUT DEVICES
The devices that display the results of processing done by the CPU are called
output devices. Output can be a printout from the printer, sound from the
speakers, image on the monitor or content on the projector. The most commonly
used output devices are printer, monitor, speakers, projector, plotter, etc.
Printer: A printer is an output device used to print text or pictures. There are three
types of printers: Dot matrix printer, Inkjet printer and Laser printer.
Dot Matrix Inkjet Laser
21 st
Century #Leadership & Responsibility
Skills
“Take a printout only if it is necessary. By doing
this, you can save trees. Ask your teacher, how
can it be done?”
Hardware and Software 11

