Electro Mechanical Computers

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Overview

Mark I is the first electro-mechanical computer developed by Howard Aiken in 1937. This note provide us an information about Electro-Mechanical Computers.
Electro Mechanical Computers
MARK-I

It is the first electro-mechanical computer developed by Howard Aiken in 1937. The machine was 5ft long, 3ft wide and 8ft high and used in 18000 vacuum tubes. The machine took 1 second to perform 3 mathematical calculations.


http://i.imgur.com/xsEy4N0.jpg
Atanasoff Berry Computer (ABC )

In 1942, J.V. Atanasoft and Clifford Berry in 1942 developed Atanasoff Berry computer. It was developed to solve simultaneous equation.


ENIAC (Electronic Numerical Integrator and Calculator)

In 1946, this machine was developed by John Mauchlay and J. Presper Eckert. It used decimal number system for calculation. This machine can calculate 300 times faster than any other machine of that time. This machine was used in military operation for firing ballistic missiles.

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EDSAC (Electronic Delay Storage Automatic Computer)

This machine was developed by Maurice Wilkes and his team in 1949. 3000 vacuum tubes and consumed 30KW electric power.


EDVAC (Electronic Discrete Variable Automatic Computer)

This machine was developed by John Mauchlay, John Presper Eckert with assistance of John Von Neumann in 1952. This machine was the first machine that could store programs in it with the help of binary digits.


UNIVAC ( Universal Automatic Computer)

This machine was first developed by John Mauchlay and J. Presper Eckert in 1951. This was the first computer developed for commercial use.


Some useful technical terms
  1. The first computer brought in Nepal. (IBM 1401)
  1. The first mechanical device using strings on beads. (Abacus)
  1. Father of computer science. (Charles Babbage)
  1. The first automatic electromechanical computer. (Mark-1)
  1. The first commercially used general purposed computer. (UNIVAC)
  1. The founder of IBM Company USA. (Dr. Herman Hollerith)
  2. The person who gave stored program concept. (John Von Neuman)
  3. The main component used in third generation computers. (Integrated Circuit)
  4. The computer generation in which laptops and palmtops are being developed. (Fourth generation)
  5. The branch of computer science that will possess reasoning power as human being. (AI)

Full forms
  1. Bit : Binary Digit
  2. GIGO : Garbage in Garbage Out
  3. CPU : Central Processing Unit
  4. IPM : Information Processing Machine
  5. MIPS : Millions of Instructions Per Second
  6. ECG : Eco Cardio Graphy
  7. ATM : Automatic Teller Machine
  8. ICU : Intensive Care Unit
  9. CD-ROM : Compact Disk Read Only Memory
  10. DVD : Digital Versatile Disk
  11. EDSAC : Electronic Delay Storage Automatic Computer
  12. EDVAC : Electronic Discrete Variable Automatic Computer
  13. UNIVAC : Universal Automatic Computer
  14. ENIAC : Electronic Numerical Integrator And Calculator
  15. ASCII : American Standard Code for Information Interchange
  16. E BCDIC : Extended Binary Coded Decimal Interchange Code
  17. BCD : Binary Coded Decimal
  18. IC : Integrated Circuit
  19. LSI : Large Scale Integration
  20. VLSI : Very Large Scale Integration
  21. ULSI : Ultra Large Scale Integration
  22. PC : Personal Computer
  23. IBM : International Business Machines
  24. ASCC : Automatic Sequence Controlled Calculator
  25. ABC : Atanasoff Berry Computer
  26. PDA : Personal Digital Assistance
  27. GaAs : Gallium Arsenide
Things to remember
  • Mark-I is the first electro-mechanical computer developed by Howard Aiken in 1937.
  • In 1942, J.V. Atanasoft and Clifford Berry in 1942 developed Atanasoff Berry computer.
  • EDVAC was developed by John Mauchlay, John Presper Eckert with assistance of John Von Neumann in 1952.
  • UNIVAC was first developed by John Mauchlay and J. Presper Eckert in 1951. 
  • EDSAC was developed by Maurice Wilkes and his team in 1949. 
  • It includes every relationship which established among the people.
  • There can be more than one community in a society. Community smaller than society.
  • It is a network of social relationships which cannot see or touched.
  • common interests and common objectives are not necessary for society.
Videos for Electro Mechanical Computers
EDSAC
Running IBM 604, 1948 computer
The Atanasoff-Berry Computer In Operation
UNIVAC - Then and Now
Questions and Answers

History of computer is based on mainly calculation devices. Therefore it is classified into the following three eras:

  • Mechanical era.
  • Electro-mechanical era.
  • Electronic era.

Mark-I was the first electro mechanical computer developed by Howard Aiken. It was named as ASCC and was 8 ft high, 51 ft long and 2ft wide. It used more than 7 lakh 50 thousand parts and weighed more than 32 tons.

Atanasoff Berry computer was made to solve multiple equations at the same time.

Though Atanasoff Berry computer was the best computer at that time it could not use decimal number system calculations. ENIAC was able to calculate using decimal number system and was 300 times fadter than Atanasoff Berry computer.

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