Canon Kabushiki Kaisha

Junichi Ishiwata

Matsutoshi Ito

Hideki Gushima

An electric equipment such as a desk-top calculator having a unit conversion function is disclosed. In addition to a main-display for displaying input numeric data and results of operations, a sub-display is provided on a keyboard to display functions assigned to keys in a second function mode and then display a selected one of the functions. By watching the sub-display, an operator can identify the function for which a unit conversion operation was carried out.

Electronic equipment having a second function keying system

An electronic device comprises means for manually entering information relating to the battery and means for informing the exchange time of the battery in relation to said manual entry means.

Electronic device

There is disclosed a solar cell power supply device including a first and a second solar cells. The first cell has a determined spectral sensitivity characteristic and the second cell has a different spectral sensitivity characteristic and connected parallel to the first solar cell. A voltage regulating circuit is provided for stabilizing the output voltages from the first and second solar cells and supplying thus stabilized voltage to a load.

Solar cell power supply device

A voltage regulator which includes an electrical circuit for maintaining a constant output, said electrical circuit including at least one light emitting diode connected to provide a reference voltage and to operate as a pilot lamp.

Growing community of inventors

Yokohama, Japan

Junichi Ishiwata