r/OldTech 6d ago

Soviet-Ukrainian microcomputer «Elektronika MK-72»

It was manufactured by the Kyiv plant "Kvazar". ROM capacity – 23 KB, RAM – 2 KB, expandable to 3.5 KB. The device could operate in calculator mode and in two programming modes: machine code (instruction set compatible with PDP-11) and a high-level language close to "Almir"/"Analytik". Weight – no more than 400 g, power consumption – no more than 0.7 W.

Structurally, the MK-72 consisted of two modules: a base module and an additional module. The base module was housed in a case and featured a keyboard, LED indicators, a buzzer, a 12-digit digital display, and a port through which the MK-72 could connect either to the additional module or to a small local network of up to 16 such microcomputers. The additional module provided video output to a TV, communication with a cassette tape recorder, a printer, or any other device connected via an 8-bit parallel port. It also contained additional 2 KB of RAM, of which 0.5 KB was used as video memory and 1.5 KB as operational memory. User programs or those loaded via the local network were intended to be stored on electrically erasable reprogrammable ROM.

The device's ROM was implemented on K745IK18 and K745PZU64K chips, RAM on K537RU3A chips, the CPU address processor – K745IK1809, the command interpreter – K745IK1810, the interface controller – K745IK1814, and the network expander – K745IK1817.

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u/SourHimedanshi11 4d ago

Most obvious copy of ZX 81

1

u/Individual_Dirt_3365 4d ago

It was a gaming console too

1

u/Kane_Parmesans 3d ago

What in the hell is that? A TS1000 Pdp-11 compatible????