per second, and its capabilities were fully utilized only in the Forth environment. Technical details Z80A at 3.5 MHz 64K RAM Disk drives: external 2 x 5.25" drives (up to 4 connectable) or internal 3.5" drive Connections: joystick (2 x Sinclair, 1 x Kempston), Centronics, RS-232, audio in/out (for cassette recorder), system bus extension 74-key keyboard (33 keys freely programmable) Video output: Composite video TV out, EGA monitor Operating system: built in disassembler, CP/M clone called "Beta", system language switchable between English and Russian References Computer-related introductions in 1990 ZX Spectrum clones Soviet Union–United Kingdom relations Z80-based home computers Soviet computer systems