A computer is an electronic device that can automatically accept input data, process it, and output the results. It has three main components: the input unit, central processing unit (CPU), and output unit. The CPU contains the memory, arithmetic logic unit (ALU), and control unit. The input unit includes devices like keyboards, mice, and scanners that allow data to enter the computer. The output unit contains displays and printers that output the processed results. The CPU manages and controls all computer operations by storing data and instructions in memory and using the ALU to perform calculations under the control unit's direction.

1. BASIC
Computer

2. Defined computer
 Computer is a electronic data processing device that
automatically.
1. Accept and start input data.
2. Process the same and
3. Output the processed results in the from reports.

3. Components of computer
(model of digital computer)
 These are three components of computer:-
1. Input unit.
2. Central processing unit:-
a) Memory.
b) ALU. (arithmetic & logic unit)
c) Control unit.
3. Output unit.

4. Full form of computer
C – Commonly
O – Operating
M – Machine
P – Partcurly
U - Used for
T - Triad
E – Education
R - Research

5. COMPONENT OF
COMPUTER
COMPONENT
OF
COMPUTER
INPUT C P U OUTPUT

6. INPUT DEVICE
 By which can we can entre the data into computer.
Ex.
1. Key board.
2. Mouse.
3. Scanner.
4. Pen drive.
5. Joy stick.
6. Light pen.

7. OUTPUT DEVICE
 By which can we can get the result.
Ex.
1. Monitor
2. Printer
3. Projector
4. Micro phones
5. Speaker etc.

8. CENTRAL PROCESSING
UNIT
(C P U)
 Central processing unit-It start and process the data
it manage and control all activities of computer.
CPU is consider as the brain of
computer it store the data and it control the operation
of all parts of computer.

9. Sub parts of CPU
1. ALU. (Arithmetic & Logic unit)
2. Control unit.
3. Memory.

10.  ARTHMETIC & LOGIC UNIT
(ALU)
 Function of arithmetic section is to perform arithmetic
operation . like addiction subtraction , multiplying and
divided all complex operation are done by making
reputed use for above operation.
 Function of logic section is to perform logic operation
such as comparing selection matching and
margining of data.

11. CONTROAL UNIT
 Control unit control the operation of all parts of
computer it does not carry out any actual data
processing operation.

12. MEMORY
 It start all the data to be process and instruction
required from processing.
1. It start intermediate result of processing.
2. It store final result of processing before these result
are release to an output device.
3. All input an output are figure to the main memory.

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14. Thanks
Mr. kush Sharma