Microcomputer‐based gas chromatograph with IEEE‐488 interface

A gas–chromatograph system controlled by a PET microcomputer is described. The system features twelve‐bit resolution, automatic sensitivity selection, and interfaces to a general purpose instrument bus commonly called the IEEE‐488 bus. The hardware of the interface is described in detail and uses only a few common integrated circuits. A sample chromatograph with retention times and peak areas is presented.