Portable electronic device

作者: Matsumoto Katsuyuki

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摘要: PURPOSE: To provide a portable electronic equipment capable of extending the life an internal power supply while attaining high speed data communication. CONSTITUTION: The is provided with USB connector 4, 3, controller 6 for executing communication processing personal computer(PC) 2 connected to and main CPU 7 operation normal operation. In case by 6, voltage supplied from PC through in 7, low 3.

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Hiroaki c o Mitsubishi Denki K.K. Ishikawa, Electronic device using different power sources ,(1993)