Rare Vintage Soviet Russia USSR VFD Calculator ISKRA 210 About 1979. Iskra-210 was developed in 1979 and was one of the first LSI-based calculators (large-scale integration calculators, up to 1,500 transistors implanted onto the crystal). The machine’s LSI includes two numerical memory registers, three ring counters for synchronization, a display input register, a coder, a decoder and a microprogram automaton. Will be shipped by Air Mail International priority mail. Thanks for looking I will ship to Worldwide.