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.
IC 4025 Triple NOR Gate CD4025
pc 817 Opto-Coupler عازل ضوئي ابتو كابلر
PIC16F877A microcontroller
74HC595 IC shift register 








