Digirule 2U by Brad Slattery and Brent Hauser

The Digirule 2U is basically an 8-bit programmable computer from the 1970's built into a 20cm ruler. You can program binary code directly into the Digirule 2U using the push buttons and LED's or you can write programs in assembly language on your computer then download them to the Digirule 2U via USB.

All files to make your own Digirule 2U are included in this repository, however you can also buy a pre-made version from my Tindie store - (https://www.tindie.com/products/bradsprojects/digirule2-the-8-bit-programmable-binary-ruler/)

There are online versions of the user manuals available here:

1. Digirule 2U User Manual (https://hackmd.io/@zrqJxVrZQz-EScD0kFIEYg/rJ6S9s4SP)
2. ADR2 Digirule 2U Cross-Assembler User Manual (https://hackmd.io/@zrqJxVrZQz-EScD0kFIEYg/rJ3bYYtqw)
3. DLDR2 Digirule 2U Download Utility User Manual (https://hackmd.io/@zrqJxVrZQz-EScD0kFIEYg/rkCUtKF9v)
4. UDR2 Digirule 2U Firmware Updater User Manual (https://hackmd.io/@zrqJxVrZQz-EScD0kFIEYg/B1gSKYK5w)
5. Digirule 2U FAQs (https://hackmd.io/@zrqJxVrZQz-EScD0kFIEYg/HkEHDYwAD)