Those crisp digital displays from your calculator can now be incorporated into your next project with this handy 10 Digit Monochrome LCD Display from Turing Complete Labs. It's got that same glass that you see in desktop calculators, it even has decimal and comma segments between each digit. It is daylight readable but has no backlight so you'll need to provide side or top lighting with LEDs separately to read at night.

To make interfacing easy, and reduce the pin count required to interface, the display comes attached to a PCB with an I2C driver chip. You can connect to the board via the STEMMA QT ports on either side, then use the Arduino library to display numbers with a function call.  QT Cable is not included, but we have a variety in the shop.