Jupiter Ace

Jupiter Ace
Developer	Jupiter Cantab
Type	Home computer
Released	22 September 1982
Introductory price	£89.95 (equivalent to £320 in 2025)
Discontinued	1984
Units sold	around 5,000 units
Operating system	ACE Forth
CPU	Z80 @ 3.25 MHz
Memory	3 KB (maximum 49 KB)
Removable storage	Cassette-tape interface (1500 baud)
Display	32 × 24 monochrome characters, 127 redefinable 8 × 8 pixel characters, semigraphics
Sound	Beeper

The Jupiter Ace was a British home computer by Jupiter Cantab, released in 1982. Like many other home computers of the era, it utilized the Zilog Z80 microprocessor. Known for its distinct white case and visual similarity to the ZX Spectrum, the Ace differed from other microcomputers of the time in that its programming environment used Forth instead of the more popular BASIC. This difference, along with a small selection of commercially available games and software, rudimentary sound generation through an internal speaker, and a comparatively poor character based graphic display limited sales; the machine was not a success in the market.