SlideShare a Scribd company logo
1 of 21
Download to read offline
Muhammad Atif BBE/607
Danish Mushtaq BBE/610
A “Brief” History
   Abacus considered first
    mechanical computing
    device.

   Used beads and rods to
    count numbers.

   Developed around
    3000 B.C.
Mechanical Calculator
   1612 – John Napier used
    floating point arithmetic and
    invented the logarithm.




   1622 – William Oughtred
    created the slide rule based
    on Napier’s logarithms. This
    was the primary calculator
    used by engineers until the
    1960’s.
   1642 – Blaise Pascal
    created a machine that
    could add and subtract,
    automatically carrying
    numbers.



   1673 – Gottfried Leibnitz
    built a calculator that
    could multiply and divide
    as well.
   1790 – Joseph Marie
    Jacquard invented an
    automatic loom using
    punched cards to
    control patterns in the
    fabrics.

   Punched cards were
    used to allowed some
    of the rods to pass
    through
   Jacquards invention emphasized three
    important concepts:

    Storage: Coding of information by punching
     holes on the cards.

    Programming: Linking of the cards in series to
     provide instruction in sequence.

    Program Execution: Job would be performed
     automatically as the program run.
Charles Babbage
   1786 – J.H Muller proposed a
    calculating machine called a Difference
    Engine.

   1812 – Charles Babbage conceived idea
    of difference engine.

   He designed new machine called
    Analytical Engine.
   Analytical Engine consisted of FIVE units.

    Store: Storing the data.

    Mill: Process the data.

    Control: Control the flow of data.

    Input: Enter the data.

    Output: Display the data.
   Babbage’s Analytical Engine could not
    completed due to under development of
    technology.

   But laid foundation of digital computer.

   Also called FATHER of computer.
Electro-Mechanical Machines
   1890 Hollerith won competition for
    developing data processing equipment
    for the US Census Bureau.

   Founded Hollerith Tabulating Company
    which became IBM in 1924.
Computer Generations
  Generation    Technology      Approx Dates


     First     Vacuum Tube       1942-1959


   Second       Transistors      1959-1964


    Third           ICs          1964-1973
                  SSI/MSI

    Fourth     Microprocessor    1973-1991
                  LSI/VLSI

     Fifth        ULSI/AI       1991 onwards
First Generation 1942-1959

   First Generation Electronic
    Computers used Vacuum Tubes.

   Invented in 1906.

   Vacuum tubes are glass tubes with
    circuits inside.

   Vacuum tubes have no air inside of
    them, which protects the circuitry.
   1943 Work started on ENIAC at University of
    Pennsylvania under John Mauchly and J.
    Presper Eckert with Herman Goldstein.

   Used 18,000 vacuum tubes.

   U shaped, 25m long, 2.5m high, 1m wide,
    consumed 150 kw and weighed more than
    30 tons.
   Disadvantages:

    Very big in size

    Slow in speed (40,000 operation in seconds)

    Low reliability

    Large power consumption

    Difficult maintenance
Second Generation 1959-1964
   Transistor was invented in 1948.

   Made up of from Silicon.

   A transistor is a semiconductor
    device used to amplify and switch
    electronic signals.

   Replaced vacuum tubes with
    Transistors.
   Comparing with Transistors:
    Immediate functioning, no time for heating
      necessary.

    Smaller and low weight.

    Process up to 200,000 ois.

    Less power consumption.

    Low susceptibility to trouble and long lifetime
Third Generation 1964-1973
   Third Generation Computers
    used Integrated Circuits (chips).

   Invented in 1947.

   Integrated Circuits are
    transistors, resistors, and
    capacitors integrated together
    into a single “chip”.

   Replaced Transistor with ICs
   Comparing with Transistors:

    Very small in scale.


    Cheaper than transistors.


    More reliable.


    Process up to 1000,000 ois.
Fourth Generation 1973-1991
   It contains micro chip.

   A small piece of semiconductor material
    carrying many integrated circuits
    (Transistors, resistors, and capacitors).

   Very Large Scale Integrated.

   4004 had 2,250 transistors

   The first microprocessors emerged
    in the early 1970s and were used
    for electronic calculators, using
    binary-coded decimal (BCD)
    arithmetic on 4-bit words.
Fifth Generation 1991 onwards
   It contains all best combination.

   Getting smaller and smaller, but we are still
    using microchip technology.

   Ultra Large Scale Integrated circuits.

   Giving computer the ability to think.

   Artificial Intelligence and Expert systems.
History Of Copmuter

More Related Content

What's hot

History of computer electromechanical age
History of computer electromechanical ageHistory of computer electromechanical age
History of computer electromechanical ageJesus Obenita Jr.
 
The History Of Computers
The History Of ComputersThe History Of Computers
The History Of Computerskme1011
 
Introduction and history of computers.
Introduction and history of computers.Introduction and history of computers.
Introduction and history of computers.Shahariar Rabby
 
History Of Computers
History Of ComputersHistory Of Computers
History Of ComputersLUZ PINGOL
 
History of Computer
History of ComputerHistory of Computer
History of ComputerPeachBayBeam
 
History of Computers
History of ComputersHistory of Computers
History of Computersmshihab
 
History of computer
History of computerHistory of computer
History of computeraoy_1994
 
History of the computer
History of the computerHistory of the computer
History of the computerAngela DeHart
 
Highlights in Computer History
Highlights in Computer HistoryHighlights in Computer History
Highlights in Computer HistoryBuffalo Seminary
 
Elementary Computer History
Elementary Computer HistoryElementary Computer History
Elementary Computer HistorySarah Allen
 
Evolution of-the-computers ict
Evolution of-the-computers ictEvolution of-the-computers ict
Evolution of-the-computers ictAHMAD OMAR
 
History of-computers513
History of-computers513History of-computers513
History of-computers513natasarp
 

What's hot (20)

History of computer
History of computerHistory of computer
History of computer
 
History of computer electromechanical age
History of computer electromechanical ageHistory of computer electromechanical age
History of computer electromechanical age
 
The History Of Computers
The History Of ComputersThe History Of Computers
The History Of Computers
 
Introduction and history of computers.
Introduction and history of computers.Introduction and history of computers.
Introduction and history of computers.
 
History Of Computers
History Of ComputersHistory Of Computers
History Of Computers
 
History of Computer
History of ComputerHistory of Computer
History of Computer
 
History of computer
History of computerHistory of computer
History of computer
 
History of computing
History of computingHistory of computing
History of computing
 
History of Computers
History of ComputersHistory of Computers
History of Computers
 
History of Computers
History of ComputersHistory of Computers
History of Computers
 
Computer History
Computer HistoryComputer History
Computer History
 
Computers' History Timeline
Computers' History TimelineComputers' History Timeline
Computers' History Timeline
 
History of computer
History of computerHistory of computer
History of computer
 
History of computer
History of computerHistory of computer
History of computer
 
History of the computer
History of the computerHistory of the computer
History of the computer
 
Highlights in Computer History
Highlights in Computer HistoryHighlights in Computer History
Highlights in Computer History
 
Elementary Computer History
Elementary Computer HistoryElementary Computer History
Elementary Computer History
 
Evolution of-the-computers ict
Evolution of-the-computers ictEvolution of-the-computers ict
Evolution of-the-computers ict
 
Generations of
Generations ofGenerations of
Generations of
 
History of-computers513
History of-computers513History of-computers513
History of-computers513
 

Viewers also liked

Project Management
Project ManagementProject Management
Project ManagementAtif Rehmat
 
Generations Of Computer
Generations Of ComputerGenerations Of Computer
Generations Of ComputerHOME
 
The evolution of computers
The evolution of computersThe evolution of computers
The evolution of computersSharat Chandu
 
EVOLUTION OF COMPUTER
EVOLUTION OF COMPUTEREVOLUTION OF COMPUTER
EVOLUTION OF COMPUTERfhemrosacia
 
Switching techniques
Switching techniquesSwitching techniques
Switching techniquesGupta6Bindu
 
Data Network Security
Data Network SecurityData Network Security
Data Network SecurityAtif Rehmat
 
Network Security 1st Lecture
Network Security 1st LectureNetwork Security 1st Lecture
Network Security 1st Lecturebabak danyal
 
Switching Techniques
Switching TechniquesSwitching Techniques
Switching Techniquestameemyousaf
 
Computer network switching
Computer network switchingComputer network switching
Computer network switchingShivani Godha
 

Viewers also liked (11)

Project Management
Project ManagementProject Management
Project Management
 
Generations Of Computer
Generations Of ComputerGenerations Of Computer
Generations Of Computer
 
The evolution of computers
The evolution of computersThe evolution of computers
The evolution of computers
 
Chap 8 switching
Chap 8 switchingChap 8 switching
Chap 8 switching
 
EVOLUTION OF COMPUTER
EVOLUTION OF COMPUTEREVOLUTION OF COMPUTER
EVOLUTION OF COMPUTER
 
Switching techniques
Switching techniquesSwitching techniques
Switching techniques
 
Data Network Security
Data Network SecurityData Network Security
Data Network Security
 
Network Security 1st Lecture
Network Security 1st LectureNetwork Security 1st Lecture
Network Security 1st Lecture
 
Switching Techniques
Switching TechniquesSwitching Techniques
Switching Techniques
 
Computer network switching
Computer network switchingComputer network switching
Computer network switching
 
Networking ppt
Networking ppt Networking ppt
Networking ppt
 

Similar to History Of Copmuter

Evolution of computer_1448075245
Evolution of computer_1448075245Evolution of computer_1448075245
Evolution of computer_1448075245May Andrea Francia
 
History and generation of a computer
History and generation of a computerHistory and generation of a computer
History and generation of a computerSanskritSecondarySch
 
History of computers
History of computersHistory of computers
History of computersvijayrock442
 
History and Generation of Computer
History and Generation of ComputerHistory and Generation of Computer
History and Generation of ComputerAshish KC
 
History of computer - Shivms Jaiswal
History of computer  - Shivms JaiswalHistory of computer  - Shivms Jaiswal
History of computer - Shivms JaiswalShivam Jaiswal
 
historyof computer and generation of computer
historyof computer and generation of computerhistoryof computer and generation of computer
historyof computer and generation of computerdivyajohnisg
 
History of computer
History of computerHistory of computer
History of computeraimycute_
 
Computer Architecture
Computer ArchitectureComputer Architecture
Computer ArchitectureMd Din Islam
 
Computer history & evaluation
Computer history & evaluationComputer history & evaluation
Computer history & evaluationFazil Ahamed
 
History Of Computer
History Of ComputerHistory Of Computer
History Of Computerguest420b9d
 
History Of Computer
History Of ComputerHistory Of Computer
History Of Computerguest420b9d
 
Computer for Management..pptx
Computer for Management..pptxComputer for Management..pptx
Computer for Management..pptxAnkur Kukreti
 
History of computer
History of computer History of computer
History of computer NeilfieOrit2
 
Historyofcomputer1 160228190249
Historyofcomputer1 160228190249Historyofcomputer1 160228190249
Historyofcomputer1 160228190249vishalBhosale52
 

Similar to History Of Copmuter (20)

Evolution of computer_1448075245
Evolution of computer_1448075245Evolution of computer_1448075245
Evolution of computer_1448075245
 
History and generation of a computer
History and generation of a computerHistory and generation of a computer
History and generation of a computer
 
History of computers
History of computersHistory of computers
History of computers
 
Short History of Computer
Short History of ComputerShort History of Computer
Short History of Computer
 
History and Generation of Computer
History and Generation of ComputerHistory and Generation of Computer
History and Generation of Computer
 
Brief history of computers
Brief history of computersBrief history of computers
Brief history of computers
 
History of computer - Shivms Jaiswal
History of computer  - Shivms JaiswalHistory of computer  - Shivms Jaiswal
History of computer - Shivms Jaiswal
 
History Of Computer
History Of ComputerHistory Of Computer
History Of Computer
 
historyof computer and generation of computer
historyof computer and generation of computerhistoryof computer and generation of computer
historyof computer and generation of computer
 
History of computer
History of computerHistory of computer
History of computer
 
Computer Architecture
Computer ArchitectureComputer Architecture
Computer Architecture
 
Computer history & evaluation
Computer history & evaluationComputer history & evaluation
Computer history & evaluation
 
computers
computers computers
computers
 
history-of-computers513-converted.pdf
history-of-computers513-converted.pdfhistory-of-computers513-converted.pdf
history-of-computers513-converted.pdf
 
History Of Computer
History Of ComputerHistory Of Computer
History Of Computer
 
History Of Computer
History Of ComputerHistory Of Computer
History Of Computer
 
Computer for Management..pptx
Computer for Management..pptxComputer for Management..pptx
Computer for Management..pptx
 
History of computer
History of computerHistory of computer
History of computer
 
History of computer
History of computer History of computer
History of computer
 
Historyofcomputer1 160228190249
Historyofcomputer1 160228190249Historyofcomputer1 160228190249
Historyofcomputer1 160228190249
 

Recently uploaded

Tree View Decoration Attribute in the Odoo 17
Tree View Decoration Attribute in the Odoo 17Tree View Decoration Attribute in the Odoo 17
Tree View Decoration Attribute in the Odoo 17Celine George
 
An Overview of the Calendar App in Odoo 17 ERP
An Overview of the Calendar App in Odoo 17 ERPAn Overview of the Calendar App in Odoo 17 ERP
An Overview of the Calendar App in Odoo 17 ERPCeline George
 
The role of Geography in climate education: science and active citizenship
The role of Geography in climate education: science and active citizenshipThe role of Geography in climate education: science and active citizenship
The role of Geography in climate education: science and active citizenshipKarl Donert
 
4.9.24 School Desegregation in Boston.pptx
4.9.24 School Desegregation in Boston.pptx4.9.24 School Desegregation in Boston.pptx
4.9.24 School Desegregation in Boston.pptxmary850239
 
CHUYÊN ĐỀ ÔN THEO CÂU CHO HỌC SINH LỚP 12 ĐỂ ĐẠT ĐIỂM 5+ THI TỐT NGHIỆP THPT ...
CHUYÊN ĐỀ ÔN THEO CÂU CHO HỌC SINH LỚP 12 ĐỂ ĐẠT ĐIỂM 5+ THI TỐT NGHIỆP THPT ...CHUYÊN ĐỀ ÔN THEO CÂU CHO HỌC SINH LỚP 12 ĐỂ ĐẠT ĐIỂM 5+ THI TỐT NGHIỆP THPT ...
CHUYÊN ĐỀ ÔN THEO CÂU CHO HỌC SINH LỚP 12 ĐỂ ĐẠT ĐIỂM 5+ THI TỐT NGHIỆP THPT ...Nguyen Thanh Tu Collection
 
Q-Factor General Quiz-7th April 2024, Quiz Club NITW
Q-Factor General Quiz-7th April 2024, Quiz Club NITWQ-Factor General Quiz-7th April 2024, Quiz Club NITW
Q-Factor General Quiz-7th April 2024, Quiz Club NITWQuiz Club NITW
 
Indexing Structures in Database Management system.pdf
Indexing Structures in Database Management system.pdfIndexing Structures in Database Management system.pdf
Indexing Structures in Database Management system.pdfChristalin Nelson
 
ClimART Action | eTwinning Project
ClimART Action    |    eTwinning ProjectClimART Action    |    eTwinning Project
ClimART Action | eTwinning Projectjordimapav
 
Comparative Literature in India by Amiya dev.pptx
Comparative Literature in India by Amiya dev.pptxComparative Literature in India by Amiya dev.pptx
Comparative Literature in India by Amiya dev.pptxAvaniJani1
 
Mythology Quiz-4th April 2024, Quiz Club NITW
Mythology Quiz-4th April 2024, Quiz Club NITWMythology Quiz-4th April 2024, Quiz Club NITW
Mythology Quiz-4th April 2024, Quiz Club NITWQuiz Club NITW
 
Decoding the Tweet _ Practical Criticism in the Age of Hashtag.pptx
Decoding the Tweet _ Practical Criticism in the Age of Hashtag.pptxDecoding the Tweet _ Practical Criticism in the Age of Hashtag.pptx
Decoding the Tweet _ Practical Criticism in the Age of Hashtag.pptxDhatriParmar
 
Shark introduction Morphology and its behaviour characteristics
Shark introduction Morphology and its behaviour characteristicsShark introduction Morphology and its behaviour characteristics
Shark introduction Morphology and its behaviour characteristicsArubSultan
 
31 ĐỀ THI THỬ VÀO LỚP 10 - TIẾNG ANH - FORM MỚI 2025 - 40 CÂU HỎI - BÙI VĂN V...
31 ĐỀ THI THỬ VÀO LỚP 10 - TIẾNG ANH - FORM MỚI 2025 - 40 CÂU HỎI - BÙI VĂN V...31 ĐỀ THI THỬ VÀO LỚP 10 - TIẾNG ANH - FORM MỚI 2025 - 40 CÂU HỎI - BÙI VĂN V...
31 ĐỀ THI THỬ VÀO LỚP 10 - TIẾNG ANH - FORM MỚI 2025 - 40 CÂU HỎI - BÙI VĂN V...Nguyen Thanh Tu Collection
 
Narcotic and Non Narcotic Analgesic..pdf
Narcotic and Non Narcotic Analgesic..pdfNarcotic and Non Narcotic Analgesic..pdf
Narcotic and Non Narcotic Analgesic..pdfPrerana Jadhav
 
Sulphonamides, mechanisms and their uses
Sulphonamides, mechanisms and their usesSulphonamides, mechanisms and their uses
Sulphonamides, mechanisms and their usesVijayaLaxmi84
 

Recently uploaded (20)

Plagiarism,forms,understand about plagiarism,avoid plagiarism,key significanc...
Plagiarism,forms,understand about plagiarism,avoid plagiarism,key significanc...Plagiarism,forms,understand about plagiarism,avoid plagiarism,key significanc...
Plagiarism,forms,understand about plagiarism,avoid plagiarism,key significanc...
 
Tree View Decoration Attribute in the Odoo 17
Tree View Decoration Attribute in the Odoo 17Tree View Decoration Attribute in the Odoo 17
Tree View Decoration Attribute in the Odoo 17
 
prashanth updated resume 2024 for Teaching Profession
prashanth updated resume 2024 for Teaching Professionprashanth updated resume 2024 for Teaching Profession
prashanth updated resume 2024 for Teaching Profession
 
Chi-Square Test Non Parametric Test Categorical Variable
Chi-Square Test Non Parametric Test Categorical VariableChi-Square Test Non Parametric Test Categorical Variable
Chi-Square Test Non Parametric Test Categorical Variable
 
An Overview of the Calendar App in Odoo 17 ERP
An Overview of the Calendar App in Odoo 17 ERPAn Overview of the Calendar App in Odoo 17 ERP
An Overview of the Calendar App in Odoo 17 ERP
 
The role of Geography in climate education: science and active citizenship
The role of Geography in climate education: science and active citizenshipThe role of Geography in climate education: science and active citizenship
The role of Geography in climate education: science and active citizenship
 
4.9.24 School Desegregation in Boston.pptx
4.9.24 School Desegregation in Boston.pptx4.9.24 School Desegregation in Boston.pptx
4.9.24 School Desegregation in Boston.pptx
 
Spearman's correlation,Formula,Advantages,
Spearman's correlation,Formula,Advantages,Spearman's correlation,Formula,Advantages,
Spearman's correlation,Formula,Advantages,
 
CHUYÊN ĐỀ ÔN THEO CÂU CHO HỌC SINH LỚP 12 ĐỂ ĐẠT ĐIỂM 5+ THI TỐT NGHIỆP THPT ...
CHUYÊN ĐỀ ÔN THEO CÂU CHO HỌC SINH LỚP 12 ĐỂ ĐẠT ĐIỂM 5+ THI TỐT NGHIỆP THPT ...CHUYÊN ĐỀ ÔN THEO CÂU CHO HỌC SINH LỚP 12 ĐỂ ĐẠT ĐIỂM 5+ THI TỐT NGHIỆP THPT ...
CHUYÊN ĐỀ ÔN THEO CÂU CHO HỌC SINH LỚP 12 ĐỂ ĐẠT ĐIỂM 5+ THI TỐT NGHIỆP THPT ...
 
Q-Factor General Quiz-7th April 2024, Quiz Club NITW
Q-Factor General Quiz-7th April 2024, Quiz Club NITWQ-Factor General Quiz-7th April 2024, Quiz Club NITW
Q-Factor General Quiz-7th April 2024, Quiz Club NITW
 
Indexing Structures in Database Management system.pdf
Indexing Structures in Database Management system.pdfIndexing Structures in Database Management system.pdf
Indexing Structures in Database Management system.pdf
 
ClimART Action | eTwinning Project
ClimART Action    |    eTwinning ProjectClimART Action    |    eTwinning Project
ClimART Action | eTwinning Project
 
Comparative Literature in India by Amiya dev.pptx
Comparative Literature in India by Amiya dev.pptxComparative Literature in India by Amiya dev.pptx
Comparative Literature in India by Amiya dev.pptx
 
Mythology Quiz-4th April 2024, Quiz Club NITW
Mythology Quiz-4th April 2024, Quiz Club NITWMythology Quiz-4th April 2024, Quiz Club NITW
Mythology Quiz-4th April 2024, Quiz Club NITW
 
Decoding the Tweet _ Practical Criticism in the Age of Hashtag.pptx
Decoding the Tweet _ Practical Criticism in the Age of Hashtag.pptxDecoding the Tweet _ Practical Criticism in the Age of Hashtag.pptx
Decoding the Tweet _ Practical Criticism in the Age of Hashtag.pptx
 
Introduction to Research ,Need for research, Need for design of Experiments, ...
Introduction to Research ,Need for research, Need for design of Experiments, ...Introduction to Research ,Need for research, Need for design of Experiments, ...
Introduction to Research ,Need for research, Need for design of Experiments, ...
 
Shark introduction Morphology and its behaviour characteristics
Shark introduction Morphology and its behaviour characteristicsShark introduction Morphology and its behaviour characteristics
Shark introduction Morphology and its behaviour characteristics
 
31 ĐỀ THI THỬ VÀO LỚP 10 - TIẾNG ANH - FORM MỚI 2025 - 40 CÂU HỎI - BÙI VĂN V...
31 ĐỀ THI THỬ VÀO LỚP 10 - TIẾNG ANH - FORM MỚI 2025 - 40 CÂU HỎI - BÙI VĂN V...31 ĐỀ THI THỬ VÀO LỚP 10 - TIẾNG ANH - FORM MỚI 2025 - 40 CÂU HỎI - BÙI VĂN V...
31 ĐỀ THI THỬ VÀO LỚP 10 - TIẾNG ANH - FORM MỚI 2025 - 40 CÂU HỎI - BÙI VĂN V...
 
Narcotic and Non Narcotic Analgesic..pdf
Narcotic and Non Narcotic Analgesic..pdfNarcotic and Non Narcotic Analgesic..pdf
Narcotic and Non Narcotic Analgesic..pdf
 
Sulphonamides, mechanisms and their uses
Sulphonamides, mechanisms and their usesSulphonamides, mechanisms and their uses
Sulphonamides, mechanisms and their uses
 

History Of Copmuter

  • 2. A “Brief” History  Abacus considered first mechanical computing device.  Used beads and rods to count numbers.  Developed around 3000 B.C.
  • 3. Mechanical Calculator  1612 – John Napier used floating point arithmetic and invented the logarithm.  1622 – William Oughtred created the slide rule based on Napier’s logarithms. This was the primary calculator used by engineers until the 1960’s.
  • 4. 1642 – Blaise Pascal created a machine that could add and subtract, automatically carrying numbers.  1673 – Gottfried Leibnitz built a calculator that could multiply and divide as well.
  • 5. 1790 – Joseph Marie Jacquard invented an automatic loom using punched cards to control patterns in the fabrics.  Punched cards were used to allowed some of the rods to pass through
  • 6. Jacquards invention emphasized three important concepts: Storage: Coding of information by punching holes on the cards. Programming: Linking of the cards in series to provide instruction in sequence. Program Execution: Job would be performed automatically as the program run.
  • 7. Charles Babbage  1786 – J.H Muller proposed a calculating machine called a Difference Engine.  1812 – Charles Babbage conceived idea of difference engine.  He designed new machine called Analytical Engine.
  • 8. Analytical Engine consisted of FIVE units. Store: Storing the data. Mill: Process the data. Control: Control the flow of data. Input: Enter the data. Output: Display the data.
  • 9. Babbage’s Analytical Engine could not completed due to under development of technology.  But laid foundation of digital computer.  Also called FATHER of computer.
  • 10. Electro-Mechanical Machines  1890 Hollerith won competition for developing data processing equipment for the US Census Bureau.  Founded Hollerith Tabulating Company which became IBM in 1924.
  • 11. Computer Generations Generation Technology Approx Dates First Vacuum Tube 1942-1959 Second Transistors 1959-1964 Third ICs 1964-1973 SSI/MSI Fourth Microprocessor 1973-1991 LSI/VLSI Fifth ULSI/AI 1991 onwards
  • 12. First Generation 1942-1959  First Generation Electronic Computers used Vacuum Tubes.  Invented in 1906.  Vacuum tubes are glass tubes with circuits inside.  Vacuum tubes have no air inside of them, which protects the circuitry.
  • 13. 1943 Work started on ENIAC at University of Pennsylvania under John Mauchly and J. Presper Eckert with Herman Goldstein.  Used 18,000 vacuum tubes.  U shaped, 25m long, 2.5m high, 1m wide, consumed 150 kw and weighed more than 30 tons.
  • 14. Disadvantages: Very big in size Slow in speed (40,000 operation in seconds) Low reliability Large power consumption Difficult maintenance
  • 15. Second Generation 1959-1964  Transistor was invented in 1948.  Made up of from Silicon.  A transistor is a semiconductor device used to amplify and switch electronic signals.  Replaced vacuum tubes with Transistors.
  • 16. Comparing with Transistors: Immediate functioning, no time for heating necessary. Smaller and low weight. Process up to 200,000 ois. Less power consumption. Low susceptibility to trouble and long lifetime
  • 17. Third Generation 1964-1973  Third Generation Computers used Integrated Circuits (chips).  Invented in 1947.  Integrated Circuits are transistors, resistors, and capacitors integrated together into a single “chip”.  Replaced Transistor with ICs
  • 18. Comparing with Transistors: Very small in scale. Cheaper than transistors. More reliable. Process up to 1000,000 ois.
  • 19. Fourth Generation 1973-1991  It contains micro chip.  A small piece of semiconductor material carrying many integrated circuits (Transistors, resistors, and capacitors).  Very Large Scale Integrated.  4004 had 2,250 transistors  The first microprocessors emerged in the early 1970s and were used for electronic calculators, using binary-coded decimal (BCD) arithmetic on 4-bit words.
  • 20. Fifth Generation 1991 onwards  It contains all best combination.  Getting smaller and smaller, but we are still using microchip technology.  Ultra Large Scale Integrated circuits.  Giving computer the ability to think.  Artificial Intelligence and Expert systems.