From raspberrypi.org's GPIO page:

A powerful feature of the Raspberry Pi is the row of GPIO (general-purpose input/output) pins along the top edge of the board. A 40-pin GPIO header is found on all current Raspberry Pi boards (unpopulated on Pi Zero and Pi Zero W).

The Raspberry Pi GPIO Pinout (courtesy pinout.xyz)


You can type:

  % pinout
in the Raspbian OS and it will display information about your GPIO usage.


Tags:  Hardware, GPIO