Basic understanding of Computer system. easy to understand for kids to learn about basics of computer. like hardware software, input output device, bits and bytes, application and system software etc.

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C O M P U T E R S
200
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COMPUTER SYSTEM
• COMPUTER SYSTEM CONSISTS :
– HARDWARE
• physical components of a computer
– SOFTWARE
• data and instructions form the software,which
brings the machine to life
– LIVEWARE
• switching on a computer is done by people

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H A R D W A R E
• INPUT DEVICE
• OUTPUT DEVICE
• CONTROL DEVICE

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Input Devices
• keyboard
• mouse
• scanner
• cd-rom

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Input Devices
• keyboard
• mouse
• scanner
• cd-rom

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Output Devices
monitor
printer
speaker

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Input/output Devices
Floppy drives

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Control device
• C.P.U.
• Central processing unit
– contolling unit
– memory unit

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S O F T W A R E
• SYSTEM SOFTWARE
– OPERATING SYSTEM: DOS,
WINDOWS,UNIX
• APPLICATION SOFTWARE
– PFS, OFFICE ‘97, DBASE, WORD STAR….

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L I V E W A R E
• U S E R S

11. WHAT IS A COMPUTER ?
COMPUTER IS AN ELECTRONIC
MACHINE, WHICH GETS DATAAS
INPUT, STORES IT, PROCESS ON IT,
AND GIVE OUTPUT AS REQUIRED.

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Types of computers
• Super Computer
• Mainframe
• Minicomputers
• Microcomputers

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Bits & Bytes
 Information is recorded in computers in the
form of binary digits.
 Popularly known as BITS(BInary digiTS).
 Binary digits are made up of 0s and 1s.
 A set of 8 bits is called BYTES.
 Every character is represented by a byte.

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Bits & Bytes
8 bits = 1 byte
1024 bytes = 1 kilobyte
(1024 kilobytes)2 = 1 megabyte
(1024 megabytes)2 = 1 giga byte

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Needs of DOS
• Operating system is a master
computer program.
• Acts as an interface between
the user and the computer.

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Functions of DOS
• Command interpretation
• Manages file operations
• Manages Input/Output Device
• Boots the system

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THANK YOU
HAVE A NICE DAY