Ever wanted to add together 2 32 bit hexadecimal numbers? Never fear!

This hexadecimal calculator is inspired by common pocket calculators. In theory, it could be expanded to do other common functions (once I gain the technical know how to do so :/), but for now, it is capable of addition. The display was the most interesting part to make, but it should definitely feel quite similar to your everyday calculator.

INSTRUCTIONS:
Type in each hexadecimal number (0 - 9, a - f) (preferably one at a time) into the keyboard. The number will then be moved onto the display. Press "clear" to revert the inputted number. Press the "+" key to add the number to the memory. The display will then show the number stored in the memory. When a new number is input, the display will clear, and will show the new number. To clear the memory, press the "clear all" button. oh and also its like an old calculator