 Joysticks connected to the QL with similar type 630W plugs.The QL was originally conceived in 1981 under the code-name "ZX83", as a portable computer for business users, with a built-in ultra-thin flat-screen CRT display similar to the later TV80 pocket TV, printer and modem.As development progressed it eventually became clear that the portability features were over-ambitious and the specification was reduced to a conventional desktop configuration.