Это именно LCD, но не такой, как мы привыкли.
Иначе питание от одного AA-элемента - нереально.
Цитата:
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It was on May 15, 1973 that Sharp released the EL-805 LCD calculator, starting a revolution in electronics. Until then, calculators used fluorescent character display tubes or light-emitting diodes. Using LCD for the number display meant that power consumption was cut dramatically - to a mere 1/100th of previous calculators. This astonishing leap in energy efficiency gave users 100 hours on one AA battery.
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Жаль, у моего экземпляра шильдик крышки экрана с гордой надписью "Liquid Crystal" - потерян.
Sharp EL-805 The first Sharp LCD calculator. It uses COS ("Crystal on Substrate") technology where the LCD display was manufactured as an integral part of the glass circuit board.
Первый отечественный карманный калькулятор "Электроника Б3-04
Stolen from Sharp?
