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Computer development history

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Lecture 2 Computer development history Topic History of computer development Computer generation Programming language History of Computer Development Charles Babbage ... – PowerPoint PPT presentation

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Title: Computer development history


1
Lecture 2
  • Computer development history

2
Topic
  • History of computer development
  • Computer generation
  • Programming language

3
History of Computer Development
  • Charles Babbage
  • Design first modern computer
  • Invent
  • difference engine
  • Analytical Engine (main part of copmuter system)

4
History of Computer Development
  • Count Ada Lovelace
  • First programmer
  • Assist in developing instruction for Babbage
    device computation

5
History of Computer Development
  • Herman Hollerith
  • Develop first computer using electrical power
  • Founder of electronic punch card

6
History of Computer Development
  • John V. Atanasoff Clifford Berry
  • Build first electronically operated digital
    computer
  • ABC (Atanasoff Berry Computer)

7
History of Computer Development
  • ENIAC (Electronik Numerical Integrator and
    Calculator)
  • J.Mauchly J.Presper Eckert
  • Main general purpose electronic computer
  • Used in world war II
  • Used to solve mathematical problem
  • Use vacuum tube

8
History of Computer Development
9
History of Computer Development
  • UNIVAC 1 (Universal Automatic Computer)
  • First generation comercial computer
  • For scientific and comercial applications
  • Eckert Mauchly send first UNIVAC to U.S Census
    Bureau in 1951.

10
History of Computer Development
11
History of Computer Development
  • UNIVAC characteristic
  • Easier to use compared to ENIAC
  • Less vacuum tube (more reliable)
  • Stored program found by John Von Neumann
  • General purpose
  • Use machine language

12
History of Computer Development
  • Apple Computer
  • Found by Steve Jobbs dan Steve Wozniak in 1977
  • First computer with easy to use screen and
    keyboard

13
History of Computer Development
14
Computer Generation
  • First Generation
  • Second Generation
  • Third Generation
  • Fourth Generation
  • Fifth Generation

15
Computer Generation
  • First Generation
  • 1940s early 1950s
  • Vacuum tube as switch
  • Bulky, slow, easily heated
  • Always fail
  • ABC, MARK1, ENIAC, UNIVAC
  • Stored program concept (Von Neumann)
  • Assembly Language

16
Computer Generation
  • Second Generation
  • 1950s mid 1960
  • transistor as switch
  • Smaller and faster (x1000)
  • Less heat, more reliable, cheap
  • The usage of high level language begins
  • DEC-PDP-1

17
Computer Generation
  • Third Generation
  • Late 1960s
  • Silicon chip as switch
  • Smaller and faster (x1000)
  • More reliable

18
Computer Generation
  • Fourth Generation
  • 1970s current
  • Single processor microchip as switch
  • Very low cost and afforded by individual

19
Computer Generation
  • Fifth Generation
  • Japan founded artificial intelligence in the mid
    1990
  • Expert system, natural language
  • Communication and network

20
HISTORY AND COMPUTER REVOLUTION
21
Programming Language
Generation Programming Language
1 Machine Language
2 Assembly Language
3 High Level Language
4 Very High Level Language
5 Natural Language
22
Programming Language
  • Machine language
  • Low level language
  • Use number
  • Data and program instruction is 0 and 1(0n/off)
  • Program written in other language must be changed
    to machine language before execution

23
Programming Language
  • Assembly language
  • Low level
  • Use mnemonic code, abbreviation
  • Program written in this language is translated by
    assembler into machine language program code
    before execution

24
Programming Language
  • High Level Language
  • Exist 1960
  • Similar to English
  • Program written in this language is able to
    overcome more complex problem/task
  • Translator is known as compiler which change
    program to machine language before execution
  • Commercial application such as C/C

25
Example of High Level Language for Displaying
Hello World
  • Cobol DISPLAY Hello World
  • Basic PRINT Hello World
  • C printf (Hello World)
  • Java System.out.println(Hello World)
  • C coutltlt Hello World

26
Programming Language
  • Very High Level Language
  • Known as 4GL
  • Program is written shorthand form
  • Able to handle hundreds instruction lines (3rd
    generation language can handle few lines only)
  • Example Query Language

27
Programming Language
  • Natural Language
  • Similar to spoken English Language
  • Natural Language translate human instruction into
    codes that understandable by computer
  • Also known as knowledge base language
  • Interact with knowledge base
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