basic foundamental of_computer
TRANSCRIPT
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What is a Computer ? A Computer is an electronic device that
can perform - Mathematical Operation. Logical Operation. Graphical Operation.
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COMPUTERCOMPUTER
Speaker
System Unit
CPU
Monitor
MouseKeyboard
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Application of computer in Our Daily Life
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RAILWAY
BANKING
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Benefits of Computer High Speed Accuracy Storage Automation Diligence Versatility
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Limitation of Computer Zero IQ (Intelligence Power) No Common Sense
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Basic Concept of Computer
INPUT PROCESS OUTPUT
Data ProcessingMeaningful Information
(Raw Material)
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INPUT OUTPUTPROCESSING
WASHING
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HISTORY OF COMPUTER
1617
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Computer system
Hardware Software User
Computer System
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What is Hardware ? All electronic parts of computer that we can
touch and feel are called hardware. Such as-
Keyboard
Mouse
Monitor
Printer
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What is Software ? The set of instruction is called a program and
a set of interlinked program is called software. Such as-
Ms Power Point Ms Word Ms Excel Ms Paint
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What is a User ? A person who uses computer is called a
user.
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Keyboard Motherboard Monitor Floppy DiskMouse CPU Printer CDScanner Video Card Speaker DVDMicrophone Sound Card Hard DiskWeb Camera Pen
Drive
HARDWARE
INPUT DEVICE PROCESS DEVICE OUTPUT DEVICES MEMORY DEVICES
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INPUT DEVICESDevices which provide data and instructions to the computer are called input devices. Such as –
Keyboard MouseScanner Microphone Web Camera
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Keyboard
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Mouse
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Scanner
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Microphone
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Web Camera
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Motherboard
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Parts of C.P.U
CU is responsible for ALU is responsiblecontrolling all hardware for all arithmeticoperations. and logical operations
C.P.U
CU(Control Unit)
ALU(Arithmetic & Logical Unit)
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Sound Card
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Video Card
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There are two type output devices
Monitor Printer Speaker
Output Devices
Softcopy Output Devices Hardcopy Output Devices
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Monitor
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Speaker
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Printer
Ink jet printers (non-impact printer)
Laser printers (non-impact printer)
Dot-matrix printers (impact printer)
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There are two types of memory
Memory
Primary Memory Secondary Memory
RAM(Random Access Memory)
ROM(Read Only Memory)
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RAM
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ROM
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Secondary Memory Devices
Floppy Disk Compact Disk Digital Video Disk Hard Disk Pen Drive
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Floppy Disk
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Compact Disk
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Digital Video Disk
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Hard Disk
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Pen Drive
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Unit Information Kilobytes, megabytes, gigabytes and terabytes are
units form measuring the capacity of a storage device.
8 Bits = 1 Byte 1024 Bytes = 1 Kilobyte (KB) 1024 KB = 1 Megabyte (MB) 1024 MB = 1 Gigabyte (GB) 1024 GB = 1 Terabyte (TB)
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Block Diagram of Computer
CU
ALU
Input UnitMemory(RAM)
Output UnitData Result
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Desktop Computer
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Laptop Computer
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Handheld Computer
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Tablet Computer
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