Brief_History_Computing
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The document traces the history of computing from early counting devices through mechanical calculators and tabulating machines to modern electronic digital computers. It highlights key developments such as the abacus, place value systems, Boolean logic, punched cards, vacuum tubes, transistors, and programming languages that advanced computing technology over thousands of years and enabled the computers we use today.
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The document provides a history of early computing devices and the evolution of computers through generations. It describes the earliest manual mechanical devices like the abacus. It then outlines the development of mechanical aids like Napier's Bones in the 1600s, the Pascaline adding machine in 1642, and Leibniz's Stepped Reckoner in 1694. The Jacquard loom of 1801 was an early programmable machine. Charles Babbage designed analytical engines in the 1800s but they were not completed. Herman Hollerith invented the tabulating machine using punched cards for automated data processing. Early electronic computers of the 1940s-50s included ENIAC, EDVAC, EDSAC and UNIV
Introduction to computers
This document provides an overview of the history of computers from ancient calculating devices like the abacus to modern electronic computers. It discusses how early mechanical calculators like Gottfried Leibniz's step reckoner paved the way for programmable computers. Charles Babbage designed but did not complete the Analytical Engine, considered the first general-purpose computer. Herman Hollerith's tabulating machine used punched cards to automate census counting. Early electronic computers like the Harvard Mark 1 used relays before the development of transistors allowed for faster computing.
History of computer 08
The document provides a history of computers from ancient counting devices like the abacus to modern computers. Some key developments mentioned include:
- The invention of early mechanical calculators like the Pascaline in 1642 and the Leibniz calculator in 1671.
- The creation of programmable looms by Joseph Marie Jacquard in 1804 which used punched cards, a precursor to computer programming.
- The development of the Analytical Engine by Charles Babbage in 1833, considered a first computer for being programmable and using punched cards as programs.
- The invention of the transistor at Bell Labs in 1947, replacing vacuum tubes and enabling smaller computers.
- The
Introduction to Computing Lecture 01 history of computers
Slides Include history of computers ,historical background of computer ,generations of computer ,introduction to computers ,computer history ,abacus, earliest computing devices, introduction to computing, introduction to computers, historical background of computers
Content Credits: Arthur Glenn(SlideShare.net)
History of computers2
The first computers were people who performed complex calculations manually. Early mechanical aids for calculations included the abacus and inventions by Napier, Pascal, and Leibniz that used gears to perform addition, subtraction, multiplication and division. Herman Hollerith developed the first electromechanical tabulating machine using punched cards to automate census data processing, laying the foundation for IBM. During WWII, the military funded development of programmable digital computers like the Harvard Mark I to compute artillery firing tables, establishing computers for scientific and government use.
History Of Computers
This document provides a history of the development of computers from ancient counting devices to early modern calculating machines and programmable computers. It describes inventions like the abacus, Napier's bones, the slide rule, Pascaline, Leibnitz calculator, Jacquard loom, Difference Engine, Analytical Engine, Tabulating Machine, and the Mark I - considered the first general purpose computer. These inventions progressively added capabilities like storage, programming, and automatic execution of programs to process data into useful information.
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Brief_History_Computing
- 1. A Brief History of Computers Introduction to Computer Technology
- 12. Towards computers: The First Mechanical Calculator None of the devices we have so far looked at are true mechanical calculators…. [ They are really just tools that assist in calculation]
- 13. Towards computers: The First Mechanical Calculator The Forefathers of the Modern Computer Blaise Pascal (1623-1662) Gottfried Wilhelm von Leibniz (1646-1716) Charles Babbage (1812-1833)
- 14. Pascal’s Arithmetic Machine Pascal's Arithmetic Machine used a series of gears each with ten teeth. Numbers could be entered and the gear would turn the correct number of teeth. The gear train then supplied a mechanical answer equivalent to the correct arithmetic answer. The machine could only add and subtract, while multiplication and division operations were implemented by performing a series of additions or subtractions. NOTE: In fact the Arithmetic Machine could really only add, because subtractions were performed using complement techniques, in which the number to be subtracted is first converted into its complement, which is then added to the first number. Interestingly enough, modern computers employ similar complement techniques. [Known as 2’s complement mathematics] This gear train system is still used by mechanical odometers
- 15. Leibniz’s Step Reckoner Leibniz developed Pascal's ideas and, in 1671, introduced the Step Reckoner , a device which, as well as performing additions and subtractions, could multiply, divide, and evaluate square roots by series of stepped additions. Pascal's and Leibniz's devices were the forebears of today's desk-top computers, and derivations of these machines continued to be produced until their electronic equivalents finally became readily available and affordable in the early 1970s. Leibniz also strongly advocated the use of the binary number system , which is fundamental to the operation of modern computers .
Editor's Notes
- This presentation contains a brief history of Computing and Computers in the context of Human History and Development