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What is computer? ,[object Object],The two principal characteristics of a computer are:  ,[object Object],[object Object],2. It can  execute  a prerecorded list of instructions (a  program )
What is computer? ,[object Object]
All general-purpose computers require the following hardware components:  ,[object Object],[object Object],[object Object],[object Object],[object Object]
Synthesis ,[object Object]
Personal  Portable  Servers Embedded  Mainframes Classification Description Single-user, general purpose computers that are usually found at home, in school and office  Smaller “on the go” personal computers that use batteries. Computers on a network that provide services to client-computer services Can be found inside mostly commonly used devices to provide them with “intelligence” They are big, fast, and expensive computers that are used for large-scale data manipulation, updating, and communication
These are single-user, general-purpose computers that normally fit on a desktop and are not easily transported because of weight. Personal Computers
Portable Computers ,[object Object],is a  computer  that is designed to be moved from one place to another and includes a display and keyboard. Portable computers, by their nature, are  microcomputers .
Server ,[object Object]
Embedded Computers ,[object Object]
 
Supercomputers and mainframes ,[object Object],The only difference between an ordinary computer and supercomputers is that supercomputers have their CPUs opened at faster speeds than standard computers.
Can you beat lola Techie?
 
 
 
 
All general-purpose computers require the following hardware components:  ,[object Object],[object Object],[object Object],[object Object],[object Object]
Components of the Computer System ,[object Object],[object Object],[object Object]
Input Devices
Output Devices
Storage Devices
Network Devices
CPU
Software ,[object Object],[object Object],[object Object],[object Object],[object Object]
 

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History, classification and components of computers

  • 1.
  • 2.
  • 3.
  • 4.
  • 5. Personal Portable Servers Embedded Mainframes Classification Description Single-user, general purpose computers that are usually found at home, in school and office Smaller “on the go” personal computers that use batteries. Computers on a network that provide services to client-computer services Can be found inside mostly commonly used devices to provide them with “intelligence” They are big, fast, and expensive computers that are used for large-scale data manipulation, updating, and communication
  • 6. These are single-user, general-purpose computers that normally fit on a desktop and are not easily transported because of weight. Personal Computers
  • 7.
  • 8.
  • 9.
  • 10.  
  • 11.
  • 12. Can you beat lola Techie?
  • 13.  
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  • 15.  
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  • 23. CPU
  • 24.
  • 25.