electronic equipment:medical instrument, TV sets, PC, anywhere controlling signal is needed.
chip is encapsulated in the package, pads are connected out.
When power and input signals supplied, it can produce the output signal through interacting electrons .
an system electronic have pasive component like resistor, capacitor, so aktive component like transitor and diode.
if that componets use develop complex system electronic like computer, microprocessor, may be have million transistor. so to simple assembling the more transisitors make one contain it to integrated. so named integrated circuit IC