It's a presentation

1. S.N.B.P COLLEGE OFARTS,COMMERCE,SCIENCE
AND
MANAGEMENT STUDIES
Fundamental of computer
on
THE BLOCK DIAGRAM OF COMPUTER
PRESENTED BY :
V
ARSHA.A. CHOUDHARY
Roll NO: BB231092
FY BBASNBPCollege OfACS and Management Studies

2. INTRODUCTION
 A Computer consists of primarily three different types they are
central processing unit commonly called as processor [CPU],
Input Devices and Output Devices.
 Further Central Processing Unit contains ALU [Arithmetic Logic
Unit] and Control Unit. The set of instruction or information or
data submitted to computer is in a raw form which is entered with
the help of input devices like keyboard and mouse
 The block diagram of a computer provides a visual representation
of its internal components and their interconnections.
 Memory stores data and instructions temporarily for the CPU to
access quickly. Input/output devices allow users to interact with
the computer, while storage devices retain data for long-term use.

3. BLOCK DIAGRAM

4. Input unit
 Computer receives data and instruction through the input unit .
 The input unit consists of one or more input devices .
 Input devices includes :-
o Keyboard
o Mouse
o Scanner
o Joystick

5. Output unit
 Computer provides information and results of computation to the
outside world through the output unit .
 The output unit consists of one or more output devices.
 Output devices includes:-
o Monitors
o Printers
o Speakers

6. Storage unit
 The storage unit of the computer holds data and instructions that
are entered through the input unit , before they are processed .
 Storage devices are divided into two categories :
o Primary memory
o Secondary memory
 Primary memory :- Primary memory, also known as RAM (Random Access
Memory), is the main memory in a computer that stores data and instructions
currently being used by the CPU.
 Secondary memory :-Secondary memory, such as hard drives and SSDs,
provides non-volatile storage for data and programs, retaining information
even when the power is turned off.

7. Central Processing Unit (CPU)
 It is the brain of the computer .
 The arithmetic logic unit (ALU) and the control unit (CU) of a
computer system are jointly known as the central processing unit
(CPU).
 CPU performs actual processing of data , according to
instructions from programs.
 CPU includes :-
o Control unit
o Arithmetic Logic Unit

8. Control unit
 It controls all other units in the computer .
 It is the central nervous system of the computer that
controls and synchronizes its working
 It is also responsible for controlling
input/output ,memory ,and other devices connected th the
CPU.
Arithmetic Logic Unit
 All calculations are performed in the arithmetic logic unit
(ALU) of the computer
 The data inputted through input devices is stored in the primary
storage unit . The arithmetic logic unit performs arithmetic and
logical operations .