Were the Apple IIc and the Gradiente Expert made by different companies?
Gradiente Expert The Expert, made by Gradiente Eletrônica (to date best known as a game console and Hi-Fi equipment company) was the second and last MSX home computer launched in the Brazilian market, in the mid-1980s.
Atari Sierra Sierra was the code name for a 16-bit/32-bit personal computer designed by Atari's Sunnyvale Research Lab (SRL) starting around 1983. The design included a new GPU known as "Silver and Gold", a powerful sound synthesizer known as AMY, and a new operating system code-named "Eva". The two-chip GPU was collectively known as Rainbow, and the system is sometimes referred to by this name. The CPU had not been chosen, but the Motorola 68000 and Intel 286 were being considered.