发明名称 Electronic apparatus for time calculation
摘要 An electronic time calculator is provided which includes numeral keys for receiving numerical data, region keys for receiving data of desired regions, an indicating circuit for indicating that the numerical data introduced by the numeral keys is to be processed as time data, and a converting circuit for converting the numerical data indicated as time data by the indicating circuit into time data for the region designated by the region key.
申请公布号 US4217653(A) 申请公布日期 1980.08.12
申请号 US19780914741 申请日期 1978.06.12
申请人 CANON K K 发明人 NAKATA, SHINICHI
分类号 G04G9/00;(IPC1-7):G06F7/38;G04B19/22;G06F15/02 主分类号 G04G9/00
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