You need a GPIB adaptor card in your computer and a GPIB lead. The GPIB adaptor will come with driver softwar. According to the specification, the GPIB allows speeds of 1 Mbyte per second. However, in practice, the maximum speeds tend to be around 250 Kbytes per second. Each device on the GPIB must have a unique, primary, address which is a number from 0 to 30.
Secondary addresses are also available for modular instruments.
Using the GPIB the computer can address each module individually. As 961 secondary addresses are available, and each module might provide 16 or 32 inputs or outputs, there is potential for vast numbers of measurement and control channels. Only one device may talk at once, but more than one may listen to the Talker. The GPIB uses a 16 line parallel connection which has strictly defined mechanical and electrical properties. Not used on many devices.