| 摘要 |
Logic level shifting circuits are described in which integrated circuits process binary logic input signals of logic levels different from the input logic levels of said integrated circuits but within the ranges of tolerance and safety of said integrated circuits. Such logic level shifting techniques are used as a simple but effective method to cut down power consumption in luminous displays using seven-segment LED's or the like which may be placed in series as a result of logic level shifting between the respective counters and decoders which control them.
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