working on electronics circuit board

14-leg 14-legged 14-pin background capacitor card chip circuit circuit board cmos component control-circuit diagnostic digital diode dip-socket electrical-electronic-engineering electrical electricity electronic electronic-lab electronic-schema electronics engineer engineering equipment firmware-update hardware ic-socket industry installation integrated-circuit logic-ic mainboard mounting pcb plugging repair resistor semiconductor service silicon technical technician technology tool transistor transistor-transistor-logic ttl work