The document discusses the basic organization and components of a computer system. It describes how a computer system consists of people, data, procedures, hardware, and software that work together to solve problems. The core components of a computer are the input, memory, arithmetic logic unit (ALU), output, and control unit. It also outlines the purposes of these elements, such as the input unit receiving data, the memory unit storing information, and the control unit executing instructions sequentially. Finally, it provides examples of common computer parts like the CPU, disk drives, keyboard, monitor, and their basic functions.

1. Basic organization ofBasic organization of
computercomputer
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Different parts of computerDifferent parts of computer

2. Outline
About computer system
Computer components
Organization of a computer
Purpose of computer elements
Different parts of a computer

3. Computer System
The components of a computer system are:
 People
 Data
 Procedures
 Hardware
 Software
 A system is a collection of elements that works together
to solve a specific problem.
 Regardless of size, every computer needs other
components to produce results.
Data
People
Hardware
Procedures Software

4. Computer Components
A computer performs three functions:
(i) It accepts data (Input)
(ii) It processes data by performing desired arithmetic and logical
operations (Processing)
(iii) It generates data in the desired form (Output).

5. Computer Components
Basic components (organization) of a computer system
Computer system consists of five basic components. They are:
(1) Input Unit
(2) Memory Unit
(3) Arithmetic Logic Unit (ALU)
(4) Output Unit
(5) Control Unit

6. Organization of Computer

7. Purposes of the elements of Computer
Computer elements Purposes
(1) Input Unit (1) To receive data and instruction in a form that can be understood
by the computer.
(2) Output Unit (2) To give out information via a suitable device, i.e., a printer or a
monitor. The output information is obtained from main storage.
(3) Arithmetic Logic
Unit
(3) To carry out calculations and comparisons based on the
instructions.
(4) Control Unit (4) To take stored instructions in sequence one at a time
(5) Memory Unit (5) To hold data and instructions after input unit until needed. Also
to hold information waiting output.

8. Different parts of a computer
There are various parts of a computer. Such as Monitor, Mouse, Keyboard,
CPU, Printer and etc.
Fig: Parts of a computer

9. Different parts of a computer
CPU: It is the part of the computer that interprets data, executes instructions, and
solves arithmetic problems; the main information processor or "brain" of the
computer.
Disk: Drive the mechanism that rotates a storage disk (such as a floppy, hard, or
CD-ROM disk) and read or writes data (or both) on a disk medium.
CD-ROM: (compact disk read only memory) a rigid plastic disk that stores a large
amount of data through the use of laser optic technology.
Keyboard: a keypad device with buttons or keys that a user presses to enter data,
characters and commands into a computer.
Modem: The place where the computer is connected to the phone line.

10. Different parts of a computer
Monitor: A display screen to provide “output” to the user. It is where you view the
information your are working on.
Motherboard: the main board of a computer, containing the primary components
for the central processing unit, main memory, keyboard, monitor, and often having
slots for accepting additional circuitry.
Touchpad: A pressure-sensitive and motion sensitive device used in place of a
mouse.
CD: Compact Disk – A type of optical storage device.
Speakers: Used to generate or reproduce voice, music, and other sounds.
Sound Card: Connects the speakers and microphone to the computer.

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