Calculator operation time period counter in a combination of ele

Boots – shoes – and leggings

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58 23BA, 58 50R, 58152R, 324186, 364569, G06F 738, G06F 1502, G04B 3712

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active

040816648

ABSTRACT:
In a combination of an electronic timepiece and an electronic calculator including a power source, a time keeping circuit, a calculation circuit, a keyboard unit for introducing information into the calculation circuit, and a display unit for displaying information stored in the time keeping circuit and the calculation circuit, a time period counter is provided for counting the time period when the electronic calculator is actually operated. The time period when the electronic calculator is actually operated is approximately proportional to the total power dissipation of the power source. The contents of the time period counter are displayed on the display unit for indicating the power dissipation of the power source.

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patent: 3928960 (1975-12-01), Reese
patent: 3955355 (1976-05-01), Luce
patent: 3971205 (1976-07-01), Nomura et al.

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