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Elektronika MK-51

1982-2000

Soviet engineering calculator with lithium or silver oxide batteries (depends on modification). Copied from Casio FX-2500. Developed by Zelenograd's Research Institute of Fine Technology (NIITT).

Processor: K757IP1-2
Display: LCD (IZhC2-9/7), 9 7-segment digits, indicators F, П, К, Г, РАД, ГРД, σ or F, M, K, DEG, RAD, GRA, SD (ELORG screen variant)
Power: 3 V (1x3 V) lithium ML2325/DML-120 (CR2325, or CR2032 can be used) or (2x1,5 V) silver oxide SC-32 (silver oxide SR43 or AG12/LR43 alkaline analogs)