Hi, friends! In this article, we will explain the block diagram of computer with its components and functions!! https://digitalthinkerhelp.com/block-diagram-of-computer-with-its-components-functions/

1. A block diagram of
computer displays the
internal structure of the
computer, as we as the
block diagram provides the
quick overview of internal
working work flow of
computer system from
inserting data to retrieving
the desired output.

2. Computer system works with the combination
of three components; like as –
Input Unit
Central Processing Unit
• ALU – Arithmetic Logic Unit
• CU – Control Unit
Memory Unit
• Primary memory
• Secondary memory
Output Unit

3. Input Unit contains the input devices like as
scanner, joystick, keyboard, mouse, etc.
These input devices allow to user for
inserting the instruction or information into
the computer system. Input unit plays the
role as a mediator of communication that
gets the data from user to the computer
system for organized manner for processing.

4. CPU (Central Processing Unit) is also called the
“Brain” or “Heart” of the computer system. It is
main component of block diagram of computer.
CPU is a hardware electronic device that is
capable to perform various types of operations
like as arithmetic and logical operation. It has
ability to perform all calculations, comparisons
or operations inside of the CPU.

5. ALU (Arithmetic logic unit) has responsible to
perform all arithmetic and logic operations, which
are data inserted via input devices of computer, is
stored in the main memory storage unit.
Arithmetical Unit can handle few simple operations like
as addition, subtraction, division, and multiplication.
Logical Unit is capable to control the logical operations
like as AND, OR, EQUAL, GREATER THAN, and LESS
THAN, and so on.

6. The control unit (CU) deals to perform all activities
and operations of computer inside the CPU. Control
unit has a responsible to control input/output,
memory, and other devices which are linked to CPU.
Control unit obtains the set of instructions or
information, then it helps to convert the instruction
set to control signals, then these signals are moved
to central processor for later processing.

7. Memory unit also plays the major role in
the computer system because it helps to
store data and instructions before and
after processing. This unit transfers the set
of instructions to another unit of system
as per the need.

8. Primary memory is known as “Main Memory” or
“Internal Memory” or “Primary Storage Device”
or “Internal Storage Device” as well as they play
vital role in computer, because those memories
are capable to access all data directly from CPU
with the help of various buses. These memories
have limited capacity for storage and made by
integrated circuits (IC) or semiconductor
components.

9. Secondary Memory is also called “storage
device” and “auxiliary memory“, “external
memory“. Secondary storage devices are
volatile in nature, it means that data does not
discard while power turn-off, in which all data
store for long time. Secondary memory has the
speed of access of data is very slow compare to
primary memory, and cheaper as well.

10. The output unit of the computer system delivers
the results of computation and displaying the
output outside the world. The output unit
generally works as the opposite process of the
input unit and it convert the binary language
digitalized information to electronic impulses,
which are readable to the output devices. There
are few output devices, which are commonly used
like as monitor, projector, headphone, speaker, etc.

11. Thanks for giving your precious time
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