Word: computerize
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Dates: during 1970-1979
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One of them was the 19th century mathematician George Boole, who devised a system of algebra, or mathematical logic, that can reliably determine if a statement is true or false. The other was Alan Turing, who pointed out in the 1930s that, with Boolean algebra, only three logical functions are...
The functions are called AND, OR and NOT, and their operation can readily be duplicated by simple electronic circuitry containing only a few transistors, resistors and capacitors. In computer parlance, they are called logic gates (because they pass on information only according to the rules built into them). Incredible as...
The simplest and most common combination of the gates is the half-adder, which is designed to add two Is, a 1 and a 0, or two 0s (see diagram). If other half-adders are linked to the circuit, producing a series of what computer designers call full adders, the...
Though it worked on the decimal rather than the binary system, Babbage's analytical engine was also a digital computer. Numbers were represented by the turns of gears and cogs and the positions of levers. Had Babbage ever succeeded in building his engine, it might have been as big...
Input. This section translates information from a variety of devices into a code that the computer understands. In Babbage's scheme, the manual turning of counters or use of punched cards provided the input.