About computer and it's parts

1. Assignment on
About Computer parts and work process
Course Title : Data Communication
Course Code : CSE-313
Submitted To Submitted By
Pranab Bandhu Nath Lamya Mutassim
Lecturer ID: 1834902169
City University Batch:49(B)
B.Sc. in CSE

2. Computer
A computer is a programmable electronic device that accepts raw data as input and processes it with a set of
instructions (a program) to produce the result as output and stores. The term "computer" is derived from the
Latin word "computare" which means to calculate and developed by ‘Charles Babbage’ near by 14th Century.
Parts of Computer
CPU
CPU stands for Central Processing Unit that is also called as processor, is the main part or brain of computer,
which processes data and produce output. It has two parts:
 ALU(Arithmetic Logic unit): It performs addition, subtraction, multiplication, division as well logical
operations.
 CU(Control Unit): It controls all hardware operations.

3.  Input/Output unit
Input/Output, or I/O, refers to the communication between an information processing system (such as a
computer), and the outside world, possibly a human, or another information processing system. Inputs are the
signals or data received by the system, and outputs are the signals or data sent from it. keyboard or a mouse may
be an input device for a computer, while monitors and printers are considered output devices for a computer.
Mother board
The motherboard is a printed circuit board and foundation of a computer that is the biggest board in a
computer chassis. It allocates power and allows communication to and between the CPU, RAM and all other
computer hardware components.

4.  Memory Unit
Computer memory is a storage device or place that is used to store information. It has two types:
 Primary Memory: It also known as main memory.The memory unit that communicate directly with the CPU
is called primary memory. It also has two types: RAM, ROM.
 Secondary Memory: Known as auxiliary memory. The memory unit which is provide backup storage called
secondary memory. They are pendrive, hard disk drive etc.