Review
- Introduction
Computer
| It
is a machine that performs calculations |
| It
has hardware (physical components) and software |
| It
has four types of hardware components: input, processing,
storage and output |
| It
responds to a set of instructions |
Classification
based on Size and Power
| Personal
computer – small, single-user computer |
| Workstation
– single-user computer, powerful microprocessor |
| Minicomputer
– multi-user computer, supports tens to hundereds
of users simultaneously |
| Mainframe
computer – multi-user computer,supports hundreds to
thousands of users simultaneoulsy |
| Super
computer – Extremely fast, performs millions of instructions |
Classification
based on Generation
| 1st
generation – (1940-1956) Vacuum tubes |
| 2nd
generation – (1956-1963) Transistors |
| 3rd
generation – (1964-1971) Integrated circuits |
| 4th
generation – (1971- present) Microprocessors |
| 5th
generation – (Present and beyond) Artificial intelligence |
IPSO
| Input
– Data goes in |
| Processing
– Data is processed |
| Storage
– Data is stored |
| Output
– Data comes out |
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