| 摘要 |
PURPOSE:To set optionally the limit value from outside by comparing the result of operation obtained from an operator with a control signal and using the output of said comparison to select the output signal of operator or the control signal. CONSTITUTION:Two types of binary numbers are supplied to an operator 1, and the output signal of the operator 1 and a control signal are applied to a comparator 2 for comparison. Then logic ''1'' is delivered only when the control signal is larger than the operator output signal. Then output of the comparator 2 is applied to a selector 3. Then the comparator 3 selects and delivers the value of the control signal when the output signal of the operator 1 is equal to logic ''1'' and then the result of operation of the operator 1 when said output signal is equal to logic ''0'' respectively. Therefore the value larger than the control signal is not delivered among the results of operations of the operator 1. |
