This Bulgarian computer was an IBM PC compatible system. It was one of the most powerful computer available at that time in Bulgaria. It was developed by a team of computer engineers ran by professor Angel Angelov. The latest models were powered with a NEC microprocessor (at approx. 12 Mhz). They had a Bulgarian BIOS and DOS. Pravetz 16 was part of the MIK-16 family of computers, which included: - Pravetz 16 (4.77Mhz) - Pravetz 16A (1x Floppy, 1x 5MB HDD) - Pravetz 16H (improved one, 8Mhz, 1 or 2 Half size floppies + 1x HDD 20MB - half size) - Pravetz-286 NAME: 16A MANUFACTURER: Pravetz TYPE: Home Computer ORIGIN: Bulgaria YEAR: 1989 KEYBOARD: Full stroke keyboard, 85 keys,latin\cyrilic keys. CPU: Intel 8088, or 8088-2 SPEED: 4.77 Mhz or 8 Mhz CO-PROCESSOR: 8087 math. co-processor (optional), Motorola 6845 video controller RAM: 256, 384, 512 or 640 KB (optional 256KB extension card available) VRAM: 16 KB ROM: three TEXT MODES: 40 x 25 / 80 x 25 GRAPHIC MODES: 160 x 100 (16 colors), 320 x 200 (4 colors), 640 x 200 (monochrome) COLORS: 16 SOUND: Internal PC speaker I/O PORTS: Power supply, keyboard, Centronics, RS232c, Video out, Video TV output, 8 expansion slots BUILT IN MEDIA: Two 5.25'' disk drives (360 KB each), 2S/DD disks, 40 tracks, 9 sectors Hard disk: optional OS: SPS-DOS 3.30 (Bulgarian version of IBM DOS 3.30). POWER SUPPLY: Built-in PSU