The SYM-1 rhymed with KIM-1 and was hardware compatible with the popular system from MOS Technology.

Synertek SYM-1 (1977, computer trainer)
Base Configuration: expansion bus; 1K RAM (4K max); 4K ROM (24K max); integral membrane hex keypad; TV video, RS-232, TTY, and cassette interfaces; Supermon monitor in ROM