> It’s difficult to describe how pretty the LED-segment bubble display on this calculator is – photos don’t quite do it justice However the LED display was als

> It’s difficult to describe how pretty the LED-segment bubble display on this calculator is – photos don’t quite do it justice However the LED display was also the main reason why this calculator needed 4 AAA batteries (which I imagine didn't last that long), while later calculators with "boring" LCD display could run for years on fewer batteries. My father had an early electronic watch with an LED display, which had a button you had to press in order to read the time - kinda like a smartwatch...