"Microdigital TK-90X (1985), my second computer

This was my second computer, a Microdigital TK-90X. It appeared in 1985 and I bought mine late that year. As the TK-85, it was also a brazilian reverse engineered clone of a Sinclair computer, the ZX Spectrum, with some ROM additional niceties like an user defined character table and editor. I bought mine with 48 KiB RAM factory installed.
CPU: 8 bit Zilog Z80A @ 3.58 MHz
ROM: 16 kiB
RAM: 48 kiB
Graphics: Modulated RF output (TV) @ 24 X 32 text and 192 x 256 graphics with 8 colors (with 2 bright status each)
Storage: Cassette tapes"