FIELD: measuring instruments, computer engineering, in particular, electric devices for generation of histogram of voltage deviation. SUBSTANCE: device has alternating-to-direct voltage converter 1, analog-to-digital converter 2, commutator 3, two position switch 4, multiple position switch 5, decoder 6, gate 7, first, second and third NAND gates 8, 12, 21, first, second and third and fourth counters 9, 11, 14, 15, sampling pulse generator 13, clock oscillator 16, memory unit 17, indication unit 18, first and second flip-flops 19, 20, decoder 22, NOT gate 23. This results in possibility to exclude errors in stored statistic information during request of device data memory unit. EFFECT: increased precision, increased reliability. 2 dwg
