It was designed by Sinclair, developed by Bombardier (a company that develops trains and military equipment) and manufactured and distributed by Daka. There are a lot of units in the USA, where this device was first bought. Usually, they tend to be more evolved models since they have kept being produced. This unit is the first ever model, the ZX01, that is, the closest one to what Sinclair had idealized, which makes sense taking into consideration the entire collection of this Museum.