Just a presentation that brings out basic computer functioning and describes a few parts of the computer system..Hope it helps :D !

1. COMPUTER
OVERVIEW
JASMEHAK KARN
XI-A

2. COMPUTER
▪ Computer may be defined as
an electronic device which is
capable of receiving
information (data) in a
particular form and of
performing a sequence of
operations in accordance with
a predetermined but variable
set of procedural instructions
(program) to produce a result
in the form of information or
signals.

3. DATA AND INFORMATION
Data includes the raw facts
and figures provided to the
computer.
Information is the processed
or meaningful data.

4. INFORMATION PROCESSING
CYCLE
▪ Information processing cycle involves
processing of data to form information.
DATA (PROCESSING) INFORMATION

5. FUNCTIONING OFTHE
COMPUTER
▪ The computer functions in order to provide desired
accurate results to the user.
▪ For this, it takes the input from the user and
processes it in the CPU.
▪ It finally provides the required result to the user.
▪ All these steps occur is proper sequence . Hence it
is given the name of a cycle , i,e,. Input Processing
Output cycle or the IPO cycle.

6. IPO Cycle

7. INPUT
▪ The input is take up by the input unit.
▪ This unit includes the keyboard, mouse, scanner,
joystick, OMR, webcam, etc.

8. PROCESSING
▪ Processing takes place in the
main control center of the
computer i.e., CPU.
▪ The CPU guides, directs and
governs its performance.
▪ The CPU has two components
which are responsible for
different functions.
▪ The two components are CU
(Control Unit ) and ALU
(Arithmetic and Logical Unit).

9. CPU
▪ ALU
▪ It performs all the
arithmetic operations
and logical operations.
▪ It works as per the
instructions sent by
CU.
▪ CU
▪ It controls and guides
the interpretations
and flow of data.
▪ It sends control signals
to the ALU until an
operation is
completed properly.
▪ Its another function is
the program
execution.

10. OUTPUT
▪ The output is given to the user by the output unit.
▪ Output unit includes monitor, speaker, printer,
headphones, etc.

11. MEMORY
PRIMARY MEMORY
▪ Memory of the computer is a
predefined working place where the
data is stored temporarily.
▪ As a job begins, the input and
intermediate results are stored in the
memory.
▪ After the execution of a job, the
memory is cleaned creating space for
the data of the next job.

12. SECONDARY
MEMORY
▪ It the external
memory which stores
data permanently.
▪ The devices which
store memory
permanently are
called secondary
memory

13. HARDWAREAND SOFTWARE
▪ Hardware includes all the tangible parts of the
computer. It includes all the electric, electronic and
mechanical parts of the computing system.
▪ Software is the set of programmes that govern the
operations of a computer system and make the
hardware run.

15. SOFTWARE
▪ Software is the set of programs which governs the
operation of the computer system and makes the
hardware run.

16. OPERATING SYSTEM
▪ OS is the interface
between the user and
the hardware. It is an
part of the computer
system and controls
all other parts of the
computer system.
▪ It is the software that
supports a computer's
basic functions, such
as scheduling tasks
and controlling
peripherals.

17. LANGUAGE PROCESSOR
▪ This software is required
to convert high level
programming language
into computer
understandable Binary
language.
TYPES:-
1. Assembler
2. Interpreter
3. Compiler

19. APPLICATION SOFTWARE
▪ It is the set of programs
which is necessary to
carry out operations for
a specific application.
▪ It allows users to do
things like create text
documents, play games,
listen to music, or surf
the web.
▪ Examples of an
application include
a word processor,
a spreadsheet or a photo
editor

20. FIRMWARE ANF LIVEWARE
▪ Firmware is a prewritten program permanently
stored in the ROM.The user cannot easily make
changes to it.
Example: BIOS{Basic Input Output Service}
▪ Liveware is a term used for the people who are
associated with and benefited from the
computers.

21. STRENGTHS OFTHE COMPUTER
Speed
High storage

22. Accuracy
Versatility
Reliability

23. WEAKNESSES OF A COMPUTER
Zero IQ
Lack of decision
Making Power