U1 is a Schmitt inverter and U2 a D-type flip-flop. The diodes are small-signal Schottky types. The pushbutton is normally open. See the text for a discussion of resistor and capacitor values
Figure 1. U1 is a Schmitt inverter and U2 a D-type flip-flop. The diodes are small-signal Schottky types. The pushbutton is normally open. See the text for a discussion of resistor and capacitor values