Introduction of Wang 300 electronic calculator
since multiplier circuits were very expensive, Wang developed an efficient method to compute logarithms based on the circuits used in the LOCI. The WANG 300 used this method to multiply and divide. For example, to compute AxB, the user entered A and pressed the "x" key. At this point the logic converted A into log A, and then, when B was entered the logic converted B into log B, and added (log A + log B) yielding the logarithm of the result. This logarithm was finally converted into the result by finding its antilogarithm value. The result was then displayed.
While the LOCI sold at $6,700 and was more a mini-computer than a calculator, the WANG 300 was a real calculator and sold at $1700. It had about 300 transistors and Instead of a teletype, the WANG 300 used a numerical keyboard and a 10 digit display mounted in a desktop unit. By 1971 its price came down to $600. At that time, about 70% of the revenues generated by Wang Laboratories came from its line of desktop calculator.
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