Sony
Sony Corp.
Sony claims to perfect the world's first all-transistorized (no vacuum tube) desk-top electronic calculator in 1964. The first commercialised calculator was the ICC-500W in 1967. By 1973 Sony eventually decided that their SOBAX ("solid state abacus") line of desk-top calculators was far less profitable than anticipated. Sony forever left its mark on technological history by not only being "first" but also by development of SOBAX features used in virtually all later calculators, i.e., disappearing zeros (to left of displayed digits), floating decimal, the "rounding off" feature, percentage computations, and reciprocals.
Source : vintagecalculators.com
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