out" each component on a PCB. The technician probes each pin of the component in turn, comparing the expected signal on each pin to the actual signal on that pin. Example pinouts USB pinout Viewed from the front (outside) of Female Type A USB receptacle: +5V (Red) −Data (White) +Data (Green) GND (Black) PS/2 pinout 4017 decade counter LM741 operational amplifier See also Datasheet Piping and instrumentation diagram Circuit diagram Schematic 4000 series Crossover cable References External links The Hardware Book - Pinout collection Crossover search of pinouts at pinout.net Pinouts of hardware connectors with description of common interfaces at pinouts.ru Pinouts (pin-out) - Historical Pinouts collection 74xxx and 40xx (pin-outs) - Pinouts collection Pin Configuration of ICs and semiconductors (pin-outs) - Pinouts collection Electrical connectors fr:Boîtier de circuit intégré#Brochage