"This was my first computer, a Microdigital TK-85. Appeared late 1983, I bought mine in 1984. It was a brazilian unlicensed, reverse engineered clone of the Sinclair ZX-81, but with a better "gum" keyboard and factory installed 16 KiB RAM.
CPU: 8 bit Zilog Z80A @ 3.25 MHz
ROM: 10 kiB
RAM: 16 kiB
Graphics: Modulated RF output (TV) @ 22 X 32 text and 64 x 44 "semi" graphics
Storage: Cassette tapes"