[[File:Sinclair ZX80.jpg|thumb|right|Sinclair ZX80]]
[[File:Sinclair-ZX81.png|thumb|right|Sinclair ZX81]]
[[File:Timex Sinclair 1500.png|thumb|right|Timex Sinclair 1500]]
The Sinclair ZX80 and ZX81, introduced in 1980 and 1981, are early budget microcomputers notable for their price, fleeting popularity and diminutive quantity of components.