After that Toshio and his brother found a calculator that works with electricity in Business Show at the Ginza Tokyo in the year.. In 1949, they saw the opportunity to increase revenue other than sales. Biwa vertical bar By creating a calculator on their own. Most calculators in those days running gear. And the rotation by hand or by motor. I Toshio who have some knowledge of electronics. Began to devise a calculator using a solenoid coil. Calculator table sized book is created in 1954 as a mechanical calculator that works with electric mixer with the Japanese. One significant innovation in his calculator. The adaptation panel that number to only 10 of the original with the number placed in all primary. (Such as the main unit is 1-9 10-90 in the hundreds, tens, it was 100-900, etc.) and innovative one is to reduce the display window to just a single channel. Compared with the other three channels (including channels for the two channels, and output).
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