Ha, helt rätt, före LCD var det LED-siffror som gällde. Aldrig sett en klocka med det, men hade ju en gammal TI-57 miniräknare.
Men det krävdes fortfarande en knapptryckning för att se tiden...
Most watches with LED displays required that the user press a button to see the time displayed for a few seconds, because LEDs used so much power that they could not be kept operating continuously. Usually the LED display color would be red. Watches with LED displays were popular for a few years, but soon the LED displays were superseded by liquid crystal displays (LCDs), which used less battery power and were much more convenient in use, with the display always visible and no need to push a button before seeing the time. Only in darkness you had to press a button to light the display with a tiny light bulb, later illuminating LEDs.
//Saxat från wikipedia