What is Computer?
Computer is an electronic device that can solved different problems,process data ,store and retrieve data and perform calculations faster and efficiently than human .It consist of two parts one hardware another is software.
➢ There are three types of computer:
1. Analog computer
2. Hybrid computer
3. Digital computer
➢ Types Of Digital Computer:
• Super
• Mainframe
• Mini
• Micro
➢ There are three types of micro computer:
• Super Micro
• Desktop
• Laptop
➢ Two types of Laptop:
• Notebook
• PDA
➢ Parts of computer:
• Motherbord
• CPU-Central processing unit
• GPU-Graphics processing unit
• HDD-Hard disk drive
• SSD-Sold state drive
➢ Function of computer:
1. Data Input
2. Data Output
3. Data processing
4. Data Storage
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Diagram of computer
HARDWARE
Computer hardware is the collection of physical parts of comuter system.It also includes the computer case,monitor,keyboard and mouse.It also includes all the part inside the computer case,such as the hard disk drive,motherboard,vedio card and many others.Comouter hardware is what you can physically touch.
INPUT DEVICES
• Keyboard
• Mouse
• Web camera
• Digital camera
• Drawing tablet
• Microphone
• Scanner
• Touch screen
• BAR Coad scanner
• QR coad scanner
OUTPUT DEVICE
• Monitor
• Printer
• Speaker
• Headphone
• Plotter
• Projector
STROAGE DEVICES
• RAM-Random access memory
• ROM-Read only memory
• HDD-Hard disk drive
• DVD-Digital versatile disc
• USB flash memory
• Cache memory
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SOFTWARE
Software is a set of instructions that determaine or control the action of a computer.Software resides inside the hard disk drive.Without software we can not use a computer.Software’s act an interpreter between the computer hardware and the application Software/User.
➢ There are two types of software:
1.systemsoftware
2.applicationsoftware
System software:
1.Operating system.(ex-Windos,Linux,Dos)
2.Device driver.(ex-USB driver,Audio driver)
3.language processor.(ex-Java script,Html,Paython,C++)
4.Utilites software.(ex-Antivairus,Recovery software)
Application software:
1.General purpose/Packaged software.(ex-msworld,onenote,excel)
2.Customized software.(ex-student data,bnsis)
COMPONENT OF SYSTEM UNIT:
• Motherbord
• CPU or Processing fan
• Powere supply
• Power cable
• Data cable
• Case
• Case fan
• Expansion card:-vedio card,sound card,NIC
• DVD drive
• Hard disk drive
• Floppy disk drive
• RAM
COMPONENT OF MOTHERBORD
• Processor Slot
• RAM slot
• Expansion slot
• Communication port
• Parraral port
• USB port
• Keyboard/Mouse connector
• Power connector
• Floppy disk drive
• BIOS chip
• CMOS battery
COMPUTER VAIRUS
A computer is a malicious coad that Replicates by copying itself to another program,computer boot sector or documents and change how computer works.
Name of some antivirus:
• Kaspersky Anti-virus
• Norton Anti-virus
• F-Secure Anti-virus
• BullGuard Anti-virus
• McAfee Anti-virus
• Avira Anti-virus
• Bitdefender Anti-virus
• Norman Anti-virus
• VIPRE Anti-virus
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ABBREVATION
• DVD-Digital versatile disk
• BIOS-Basic Input output system
• VIRUS-Vital information resources under seize
• ALU-Arithmetic and logic unit
• HDMI-High definition multimedia interface
• USB-Univarsal serial bus
• SIMOS-Supporting interactive multimedia online service
• CPU-Central processing unit
• IC-Integrated circuit
• LAN-local area network
• OS-Operating system
• HDD-Hard disk drive
• FDD-Floppy disk drive
See Demo This File :
Downloaded ZIP file:Download/download/button
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