| 摘要 |
PURPOSE:To omit a decoder by delivering only the absolute value information through an output group of a numerical bit circuit and using a code bit circuit consisting of a latch circuit exclusive for code data in terms of codes and then controlling the numerical and code bits independently of each other. CONSTITUTION:A numerical bit circuit 15 consists of an up-down counter and counts up or down clocks by the output of an up-down deciding circuit 18. A code bit control circuit 16 detects that the count value is set at ''0''. In this case, a code bit output terminal 22 of a code bit circuit 17 is set at ''0'' if the up-data is applied to a control input terminal 20. Thus a positive code is obtained. While the circuit 15 counts up the clocks. When the down-data is applied to the terminal 20, the terminal 22 is set at ''1'' to obtain a negative code. Then the circuit 15 performs a count-up action under the control of the circuit 18. Thus the absolute value increases in a negative number.
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