3. Introduction to Computer
Computer is an electronic device which
Accepts and stores data input,
Processes the data input, and
Generates the output in a required
format.
6. Main components of computer
Input Unit : Input is any data
or instructions entered into the
memory of a computer.
Control Unit : It manages and
coordinates the entire computer
system.
Arithmetic Logic Unit (ALU): It
consists of circuits that perform
arithmetic as well as logical
operations.
7. Main Components of Computer
Central Processing Unit (CPU) : It
is Brain of the computer.It
peform data processing
operations.
Memory Unit : It is amount of
data that can be stored in the
storage unit.
Output Unit : Output Unit
receives information from the
CPU and which are used to
display output to the user .
8. Input Devices
Input Devices : Input devices are
those devices from which we can
input data and instructions into
the computers.
Keyboard
Mouse
Scanner
Joystick
Digital Camera.
9. Output Devices
Devices that display, print or
transmit the results of processing
from the computer’s memory.
Monitor
Plotter
Speaker
Printer.