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HISTORICAL DEVELOPMENT OF COMPUTING DEVICES

Computer-Studies

HISTORICAL DEVELOPMENT OF COMPUTING DEVICES

HISTORICAL DEVELOPMENT OF COMPUTING DEVICES( 20th  Century)  These generations of computers witnessed the first set of computers that used vacuum tubes for circuitry and magnetic drum for memory and were very big taking up the whole room. They were very expensive to use and in addition made use of lot of heat. The heat generated often damage the computer.   ENIAC ENIAC (Electronic Numeric Integrator and Computer) was the world’s first general purpose, electronic, digital computer. ENIAC is called general purpose because it can be reconfigured to solve many problems and electronic because it used electronic devices that is the Vacuum tubes. It was invented by John Mauchly and J.Presper Eckert FEATURES OF ENIAC 1.      The most important of ENIAC features is that its light speed. It can perform 5000 addition cycles each second 2.      It as ability to perform digit discrimination and branch loop 3.      ENIAC cannot store programs… Read More »HISTORICAL DEVELOPMENT OF COMPUTING DEVICES

Computer-Studies

HISTORICAL DEVELOPMENT OF COMPUTING DEVICES 2

HISTORICAL DEVELOPMENT OF COMPUTING DEVICES 2 (PRE COMPUTER AGE  TO 19TH CENTURY) JACQUARD’S LOOM (FEATURES, COMPONENT AND USES) The Jacquard loom is a mechanical loom, invented by Joseph Marie Jacquard in 1801. This loom simplifies the process of manufacturing textiles with complex patterns such as brocade, damask and matelassé. The loom is controlled by punched cards with punched holes, each row of which corresponds to one row of the design. Multiple rows of holes are punched on each card and the many cards that compose the design of the textile are strung together.   CHARLES BABBAGE Charles Babbage (1791-1871) was born 26 Dec 1791, the son of London banker. Babbage put forward an idea of a machine that could do 60 calculations per second. This analytical engine stamped the foundation of the modern computing. Therefore Babbage is often considered the father of modern computers. On his 200th birth anniversary, 1st… Read More »HISTORICAL DEVELOPMENT OF COMPUTING DEVICES 2

Computer-Studies

HISTORICAL DEVELOPMENT OF COMPUTING DEVICES

HISTORICAL DEVELOPMENT OF COMPUTING DEVICES The origin of computers dates back to when our fore fathers used their early calculating devices to count. For example Counting with fingers and toes: calculations were done by our fore fathers with their toes and fingers before the invention of computers. Counting with pebbles: when counting with fingers became inadequate the early men later introduced pebbles (stone) to count the number of flocks they had. Prior to the invention of alternative means for counting, fingers ,toes ,stones and beads were used in counting in the performance of simple arithmetic calculations such as additions and subtractions etc. This simple way of counting was a difficult to use for large numbers. This early method was in place till the invention of Abacus device.   ABACUS DEVICE The Abacus device was invented to replace the manual method (finger/ stone) of counting. The Abacus dates as far back… Read More »HISTORICAL DEVELOPMENT OF COMPUTING DEVICES

Computer-Studies

HISTORICAL DEVELOPMENT OF COMPUTING DEVICES

There are some computing devices that came into existence in the 20th century including the modern devices.   Examples of these devices includes: ENIAC EDVAC UNIVAC PC ENIAC: means Electronic Numerical Integrator and Calculation. It was built by prof. John Mauchly and Prof J. Presper Eckert at the University of Pennsylvia between 1943 and 1945. EDVAC: means Electronic Discrete Variable Automatic Computer. It was developed by Presper Eckert, John Mauchly and John von Neumann in the year 1949. UNIAC: means Universal Automatic Computer. It was also made by John Mauchly and Presper Eckert. It was the first computer to use magnetic tape. PCs: This means Personal Computers. These are computers that are owned by individuals, organizations, schools, public offices etc. for carrying out daily data processing activities and other specific tasks. They do not need very complex knowledge to operate.   They come in various sizes and shapes. Examples are… Read More »HISTORICAL DEVELOPMENT OF COMPUTING DEVICES

Computer-Studies

HISTORICAL DEVELOPMENT OF COMPUTING DEVICES II

HISTORICAL DEVELOPMENT OF COMPUTING DEVICES II JACQUARD’S LOOM Is a mechanical loom, invented by Joseph Marie Jacquard in the year 1801. It was used for manufacturing textiles with complex pattern. [e.g. damask, brocade etc.]. It was usually operated with punch cards. DIFFERENCE ENGINE This device was invented by Charles Babbage (known as the Father of Computer). It was used in producing astronomical and mathematical table. It uses the decimal number system (base 10) to carry out its work. It was invented in the year 1821. It was mainly used to tabulate polynomial functions. It is a mechanical calculator.   ANALYTICAL ENGINE This was invented in the year 1833 by Charles Babbage. It was the first digital computer operated with punch cards.   HOLLERITH CENSUS MACHINE It was built in the year 1881 by a scientist named Herman Hollerith. The device was used in the United States of America Census Commission.… Read More »HISTORICAL DEVELOPMENT OF COMPUTING DEVICES II

Computer-Studies

HISTORICAL DEVELOPMENT OF COMPUTING DEVICE

HISTORICAL DEVELOPMENT OF COMPUTING DEVICES The term computing means using logical and mathematical methods to calculate or process data. Some devices were used to do this even before the invention of the computer. Examples of such devices include; Abacus, Slide Rule, Napier’s Bones, Percaline, Stepped Reckoner.   ABACUS: (made by sir Abacus) :It was used then to perform addition, subtraction, division and multiplication. It can also be used to find square –roots and cube-roots of numbers.   SLIDE RULE: It was developed by WILLIAM OUGHTRED in the year 1622. It was used to calculate division, multiplication and special functions (e.g. logarithms and roots) it cannot be used for addition and subtraction.   NAPIER’S BONE: It was invented by JOHN NAPIER in the year 1617. It was a simple computing device for mathematical operations (such as products and quotient of numbers) PASCAL’S CALCULATOR (PASCALINE): It was developed by BLAISE PASCAL in… Read More »HISTORICAL DEVELOPMENT OF COMPUTING DEVICE

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