COMPONENT LIST
Resistors
R1,R4 = 220Ohm
R2,R3 = 10kOhm
Capacitors
C1-C8 = 100nF
Semiconductors
D1 = LED, 3mm, yellow
D2 = LED, 3mm, 2-pin bicolor
IC1 = TC4049B
Miscellaneous
K3-K7,K10-K14 = binding post (socket) for banana plug
J1 = ATX connector for PCB mounting
S1,S2 = tactile push button
Complete kit available from author (limited stocks)