COMPUTER SYSTEM

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CHAPTER 3
(Computer System)

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COMPUTER
• Is an electronic device
that processes data
converting it into
information that is useful
to people.
• Any computer –
regardless of its type is
controlled by
programmed instructions,
which give the machine a
purpose and tell it what to
do.

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EVOLUTION OF COMPUTERS

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THE COMPUTER SYSTEM
• A complete computer system is consist of
four major parts:
1. Hardware
2. Software
3. User/s
4. Data

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HARDWARE
• The physical devices that
make up the computer
are called hardware.
• Hardware is any part of
the computer you can
touch.
• It consist of
interconnected electronic
devices that you can use
to control the computer’s
operation, input and
output.

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COMPUTER HARDWARE

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COMPUTER SOFTWARE
• Is a set of instructions
that makes the
computer perform
tasks.
• In other words,
software tells the
computer what to do.

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SOFTWARE BRINGS THE MACHINE
TO LIFE
• When a computer uses a particular program,
it is said to be running or executing the
program.
• Most software falls into two major categories
1. SYSTEM SOFTWARE
2. APPLICATION SOFTWARE

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SYSTEM SOFTWARE
• 3 Types of System Software
 Operating System – tells the
computer how to use its components
 Network Operating System – allows
the computer to communicate and
share data across network.
 Utility – makes the computer easier
to use or to perform highly
specialized functions

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APPLICATION SOFTWARE
• Application software tells the computer how to
accomplish specific tasks, such as word processing
or drawing, for the user.
• Some of the major categories of these applications
include the following:
 Word Processing Software for creating text-based
documents, such as newsletters or brochures.
 Spreadsheets for creating numeric-based documents,
such as budgets or balance sheets.
 Database management software for building and
manipulating large sets of data.

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CONTINUATION:
 Presentation Programs for creating and presenting
electronic slide shows
 Graphics Programs for designing illustrations or
manipulating photographs, movies and animation.
 Multi-media authoring applications for building digital
movies that incorporate sound, video, animation, and
interactive features.
 Entertainment and Education software packages, many of
which are interactive multi-media events
 Web Design Tools, Web Browsers and other internet
applications like news readers and e-mail programs
 And Lastly, the famous application software is the Games for
single or multi-player over a network or internet.

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COMPUTER SOFTWARE

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USER/S
• People are the computer
operators , also known
as the “Users”.
• No computer is totally
autonomous. Even if the
computer do its job
without a person sitting
in front of it, people still
design, build, program
and repair computer
systems.

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DATA
• Consist of individual
facts or bits of
information, which by
themselves may not
make much sense to a
person.
• The computer reads
and stores data of all
kinds – words,
numbers, images or
sounds.