input/output

noun

1. the process of input or output, encompassing the devices, techniques, media, and data used: A good first step in designing a program is to define the input/output.

adjective

2. pertaining to input or output: Early input/output devices were slow. Abbreviation: I/O

noun computing

1. the data or information that is passed into or out of a computerAbbreviation: I/O
2. (modifier) concerned with or relating to such passage of data or information