The Sinclair ZX81 is an old home video games console, first released in England, Earth, in the year 1981. Although iconic and revolutionary at the time of release, and earning a knighthood for the company's founder, the console was notoriously unreliable with a predisposition to crash.
Holly, the tenth generation AI computer of Red Dwarf, once tried to console a heartbroken Dave Lister when Lister believed his love Kristine Kochanski had married another man. Holly told Lister about how he was in love once, to a ZX81, although he was warned away from 'her'. She was cheap, stupid, and wouldn't load, at least for him anyway. ("Stasis Leak", Series II)
- Aside from "Hilly", Holly's female counterpart, the ZX81 is another former lover of Holly's.
- The UKTV Play guide (the parent company of Dave which currently produces Red Dwarf) describes Holly as "slower than a ZX81".