Here's a C/C++ program that converts decimal numbers ranging from 0 to 99,999 to binary and BCD formats. Using a simple algorithm in conjunction with pointer arithmetic and bitwise shifting ...

[Phillip] wanted to play with the C preprocessor ... but the code would get rather messy. The last bit of magic [Phillip] performed was to convert decimal numbers to binary.

The single tactile button on board is used to activate the watch, showing the current time in hours and minutes in binary-coded decimal on the ... working with basic logic parts like shift registers.