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Plotter
A plotter is used to print big sketches, diagrams and maps on
long sheets of paper. They are used by engineers, architects,
scientists and designers.
Projector
A projector projects or displays data of computer screen on a HARDWARE AND SOFTWARE
large screen or surface for audience.
Smartboard
A smartboard is used in classrooms as a teaching tool. It is an interactive
board that displays information with the help of a projector. 17
21 st
Warm Write the name of following devices: Century #Technology Literacy
Skills
Up!
1. 3.
__________ __________
2. __________ 4. __________
Processing Device
Central Processing Unit (CPU) is the processing device that works on input and
sends the result to the output devices. The CPU is a
chip which is placed inside the CPU box/cabinet.
CPU is also called the “brain” of a computer as it is
responsible for all the work done. A CPU is further
divided into three parts: ALU, CU and MU.
CPU
CPU box/cabinet

