User manual

Fig. 36: Setup with finger contacts

12 Frequency Divider

The CMUS-IC 4027 contains two independent JK flipflops. A JK flipflop

is a relatively complex and highly diverse circuit. The first test uses the

IC as toggle flipflop. The inputs R and S must be applied to GND for

this, the inputs J and K to Vcc. »Toggle« means switching. The output

state changes at every 0-1 condition change at the cycle input (Clock,

C), i..e at every positive cycle flank. In the end, a rectangular signal is

generated at the output at half the cycle frequency.