| 摘要 |
A circuit apparatus for detecting a preceding value "1" has a preceding value "1" detecting circuit for dividing detected data constructed by plural bits into blocks every plural bits from an upper bit side, the preceding value "1" detecting circuit detecting the preceding value "1" by bit data supplied every divided block and a detecting signal indicative of value "1"; and a value "1" detecting signal transmitting circuit for detecting whether all the bit data supplied to the preceding value "1" detecting circuit at the preceding stage show value "0" or not, the value "1" detecting signal transmitting circuit transmitting the detecting signal indicative of value "1" as a basis of the detection of the preceding value "1" to the preceding value "1" detecting circuit at the next stage on the basis of detected results.
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