OUTPUT INVERTING DEVICE FOR FLIPPFLOP CIRCUIT

摘要

PURPOSE:To perform the inverting operation of FF with one unit of the push- button by providing the circuit which forms the signal to invert the output according to the output state of FF and the circuit which holds the above mentioned signal to deliver it to the set or reset terminal of FF as desired. CONSTITUTION:The following circuits are provided; FF circuit 1; 1st gate circuit 3 to produce two types of output signals according to the output of circuit 1; and inverse signal production circuit 2 comprising memory circuit 4 and 2nd gate circuit 5. The output signal of circuit 2 is connected to set terminal S1 of circuit 1 and reset terminal RS1 of circuit 1, and the output of circuit 5 is supplied selectively to terminal S1 and RS1 each. Then the output of FF1 is memorized in memory circuit 4 via circuit 3 and by the output of circuit 1 and the operation signal given from operation button 9, and the output of circuit 4 is selected at circuit 5 and via the signal from button 9 and then applied to FF1 to invert the output signal of FF1.