Hex Keypad Entry

A project log for Boxer-1 TTL Computer

An 8-bit TTL computer with 8 bits of address space.

boxerbombBoxerbomb 12/29/2017 at 18:090 Comments

I have created a hex Keypad entry system using Arduino. The Arduino decodes the keypad with the matrix library and provides a binary output. The keypad currently isn't tri-state but I will add a fix either in the code or by adding a 74ls245. I use it just for easy testing of the system but will be later used by the user with clock interrupts.