Made in: USSR
Dimensions: 65.2 × 9 × 115.2 mm
Weight: 60 g or less g
The solar-powered Elektronika MK-60 was released in 1982 and manufactured at the Angstrem (Zelenograd, Russia), Billur (Azerbaijan) and Calculator (Ukraine) factories. 45 roubles bought you a simple arithmetic calculator with an eight-digit LCD display, set in a hardy metal case and — a first for Elektronika — able to harness the power of the sun. The MK-60 was able to perform 11 operations automatically in under 0.6 seconds each. "The calculator has a one-chip LSI circuit hosting 8,000 transistors and runs on both natural and artificial light (within 2 m of a 100 W bulb). The automatic power-down that kicks in 10–12 minutes after the last operation is the hallmark of this model," declared the Central Research Institute in their Consumer Electronics News publication. The MK-60 was followed by the functionally identical MK-60M and an export version — the ELORG-60.