CD4047 IC Monostable/Astable Multivibrator HEF4047
CD4047B consists of a gatable astable multivibrator with logic techniques incorporated to permit positive or negative edge-triggered monostable multivibrator action with retriggering and external counting options.
741 op amp LM741 Operation Amplifier
XOR Gate 74LS86 IC 7486
Regulator 12 volt 7812 











