1400 BC: During this time an analog instrument of the computer was invented by Jamshid al –Kashi. This was used in determining the time of the day at which the conjunctions of the planet would occur. It was also used in for linear interpolation purposes (Black 2001).1492 BC: A mechanical calculator with the ability of adding and subtracting was developed. This was of great importance to the art field particularly when Leonardo da Vinci really contributed towards the success of the machine.1709: Was another unique year in the history of computers where a calculator that used pinwheel was designed. It was designed from wood and was molted in the form of a calculating clock by Giovanni Poleni (Turner, 2006).1820: This was a significant year in the history of computing with the invention of the Arithometer that was capable of performing long multiplications and divisions. All these operations were done in a faster and efficient way with the help of a movable accumulator (Walter, 2011).1834: Advancement continued in the computer field where new ideas were conceived and an analytical engine was invented. This was simply a program that was used on read only memory in the form of punched cards. Several modifications were made on the central processing unit (CPU) where it had two main accumulators and some auxiliary ones for specific duties. It also had a large memory store that could accommodate a thousand 50 digit numbers.In the year 1848 a British Mathematician by the name George Boole came up with binary algebra also known as Boolean algebra. This was later to be used greatly in the binary computer design and operation.It took thirty years of development before a mechanical calculator industry was established by Thomas de Colmar. This mainly focused on manufacturing Arithmometers that were simplified in nature. They are the most reliable calculators up to date and they are the size of a desktop (Black, 2001).1878: A calculator with an internal multiplication table was invented in the City of New York by Verea Ramon. This machine was different from the previous ones as it was much faster as compared to the shifting carriage already existing.A comptometer was developed in the year 1884 by Felt Dorr from Chicago. Being the first unique calculator it had its operands entered by pressing the keys rather than the conventional way of dialing in. It gained fame
Black, E. (2001). IBM and the Holocust: the strategic alliance between Nazi Germany and America’s most powerful corporation. New York, Random House Publisher.
Smith, D (1929). A Source Book in Mathematics. New York and London: McGraw-Hill Book Company, Inc.
Turner, F. (2006). From Counterculture to cyber culture: Stewart Brand, the Whole Earth Network and the rise of Digital Utopianism. Chicago, University of Chicago Press
Walter, I.(2011).Steve Jobs. Washington D.C. Simon & Schuster Publisher
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