ELEKTRONIKA MK-33

Description

Brand:	ELEKTRONIKA (ЭЛЕКТРОНИКА)
Model:	MK-33
Type:
Batteries:	D-0,125 D (Д-0,125 Д) x 3 or D-01 (Д-01) x 3
Lifetime:	Introduced: 1982 Terminated: unknown
Notes:	The ELEKTRONIKA MK-33 is a Soviet-built 9-digit calculator with basic functionality, memory, the square root, and the percentage function. It is a remake of the ELEKTRONIKA S3-33 which was released in 1978. Even though this MK-33 model was released in 1982 it still uses an LED display instead of LCD. The model on display here was not tested. It uses special rechargeable batteries with a non-standard formfactor and voltage. There is a lot of very interesting information on this calculator on other calculator collectors’ sites. For example: This page (link validated 2025-11-16) on elektronika.su, a really nice museum site about Soviet calculators. This page (link validated 2025-11-16) on rafalbartoszak.com. This page (link validated 2025-11-16) on arithmomuseum.com.

Peripherals

The ELEKTRONIKA BP2-3S 220 V power adapter. An interesting kind of charger. Instead of a transformer it uses two diodes and two resistors to bring the mains power down enough to charge the cells. Fortunately the battery compartment is located in such a way that the charger needs to be removed from the mains socket. If that wasn’t the case it would have been a really dangerous charger.