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ELECTRONIC COUNTING DEVICE Electronic counting devices are the modern computer. The electronic counting devices are as follows: Herman Hollerith Punch Card John Von Neumann Machine Modern Computer.   HERMAN HOLLERITH PUNCH CARD In 1881, Herman Hollerith began designing a machine to tabulate census data more efficiently than traditional hand method. Herman Hollerith invented and used a punched card device to help analyse the 1980 US Census data. A step toward automated computing machine. Herman Hollerith and James powers who worked for the US Census bureau, use the development of punched card which were first successfully with computer in 1980. The also developed a device that could read the information that had been punched into the card automatically without human help which reduced the reading errors. These advantages were seen by commercial companies and soon led to the development of improved punch card using computers created by International Business Machine (IBM).… Read More »ELECTRONIC COUNTING DEVICE



Characteristics of a Computer Speed – high speed of operation Storage – Large storage volume 3.  Versatility – Can be used to perform wide range of tasks 4. Diligence – It can perform similar operations at the same speed and accuracy at all times. 5. Automatic – Tasks are performed automatically based on the programme (instructions) given to the computer.   ELEMENTS OR COMPONENTS OF A COMPUTER INPUT DEVICES – i. .e. the unit through which data are fed into the computer e.g. keyboards, terminals, optical mark readers optical character readers, magnetic ink character readers. CENTRAL PROCESSING UNIT – This is the part of the computer that carry out the computations and calculations. It is made up of (a)       The control unit (b)       The Arithmetic and Logic Unit (c)       The Internal Memory or Storage OUTPUT DEVICES – These are used to transmit processed data to the users e.g.… Read More »THE ELECTRONIC COMPUTER

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