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INTRODUCTION TO  INFORMATION & TECHNOLOGY
What are Computers ?  ,[object Object],[object Object],[object Object]
DATA  PROCESSED  INFORMATION  2. Output to a Computer system. 2. Input to a Computer system. 1. End product of Data Processing. 1. Collection of Facts &  Figures. INFORMATION DATA
Places where Computers are Used ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Categorization of  Computers  Categorization of Computers Based on Size Based on Purpose Microcomputers Minicomputers Mainframe Super Computers PC Laptop Palmtop Analog Computers Hybrid Computers Digital Computers
Analog  Computers :   Analog computer works on the principle of analogous data. The Computers which can process analog signals, is know as Analog Computer. For eg. Pressure gauge, ECG Machine etc. Digital Computers :  Digital computer works on the principle of binary system. Each and every instruction  and data are to be converted in 0’s and 1’s which the machine understands.
Micro Computers :  Micro computers, also called Personal computers are small enough to be kept  on the table. They use a Silicon chip, called microprocessor.
Personal Computer : Commonly seen in the form of Desktop Computers used at offices, homes, shops, schools etc. Types of Microcomputers
Laptop : Also called as Notebook, can be used easily by carrying it from one place to another.
Palmtop : It is a kind of Micro computer which fits in the hand/palm and can be carried in a pocket . It works with the help of a pen which is used to select things on the screen.
Mini Computers : Mini computer is larger and more powerful than a PC. They work at high speed and support many users at the same time .
Mainframe Computers : Mainframe computer is very large, powerful and expensive. It has ‘thousands’ of PC’s attached to it. They occupied an entire room.
Super Computers : Super computer is the fastest computer used till today. They are being used a lot in research work, to process complex scientific calculations.

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IT

  • 1. INTRODUCTION TO INFORMATION & TECHNOLOGY
  • 2.
  • 3. DATA PROCESSED INFORMATION 2. Output to a Computer system. 2. Input to a Computer system. 1. End product of Data Processing. 1. Collection of Facts & Figures. INFORMATION DATA
  • 4.
  • 5. Categorization of Computers Categorization of Computers Based on Size Based on Purpose Microcomputers Minicomputers Mainframe Super Computers PC Laptop Palmtop Analog Computers Hybrid Computers Digital Computers
  • 6. Analog Computers : Analog computer works on the principle of analogous data. The Computers which can process analog signals, is know as Analog Computer. For eg. Pressure gauge, ECG Machine etc. Digital Computers : Digital computer works on the principle of binary system. Each and every instruction and data are to be converted in 0’s and 1’s which the machine understands.
  • 7. Micro Computers : Micro computers, also called Personal computers are small enough to be kept on the table. They use a Silicon chip, called microprocessor.
  • 8. Personal Computer : Commonly seen in the form of Desktop Computers used at offices, homes, shops, schools etc. Types of Microcomputers
  • 9. Laptop : Also called as Notebook, can be used easily by carrying it from one place to another.
  • 10. Palmtop : It is a kind of Micro computer which fits in the hand/palm and can be carried in a pocket . It works with the help of a pen which is used to select things on the screen.
  • 11. Mini Computers : Mini computer is larger and more powerful than a PC. They work at high speed and support many users at the same time .
  • 12. Mainframe Computers : Mainframe computer is very large, powerful and expensive. It has ‘thousands’ of PC’s attached to it. They occupied an entire room.
  • 13. Super Computers : Super computer is the fastest computer used till today. They are being used a lot in research work, to process complex scientific calculations.