IO

abbreviationStandard termElectronics

The abbreviation for input and output, referring to communication between a system and external devices.

IO stands for input/output, referring to any pins, ports, or circuits designed to communicate signals between a system and the outside world. In digital design, IO blocks handle voltage translation, driving loads, and buffering data before it reaches the core logic.

Heard on the job

We need to assign the IO pins for the SPI bus before we lock the package footprint.

Also heard as

  • I/O
  • input/output