Computer

Hardware

Computer is a CPU, input and output devices, that simplifies the control of information

Components of computers

• CPU and Primery storage
• Arithmatic and Logical control Unit
• Primery storage
• Secondary storage
• Input devices
• output devices

Classification

• Mainfram
• midrange
• PC
• Workstation
• Super computer
• Hardware requirement of ecommerce:
  • 24/7 support
  • online
  • periodical backup
  • critical

Evolution of computer software

• OS: DOS, UNIX MAC, Windows
• Languge Fortran, cobol, IMBM360,
  • Programing languuage
  • Machine language
  • Assembler language : Like "C"
  • High level language; source code, this require compilation
• Application: custom designed softwares some eg
  • control programs: they control the user end softwares
  • service programs: used at the customer level (data entry stuff)
  • packaged programe: custome made, portable

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Category: Rajkumar Category: MBA