Register Design Starting with the Accumulator

A project log for LLTP - Light Logic Transistorless Processor

My attempt to create a CPU/MCU without transistors or relays

Dr. CockroachDr. Cockroach 07/31/2020 at 22:420 Comments

August 10,2020 -  Successful test between the Adder and the Accumulator register.

August 9,2020 -  All four Accumulator bits are now mounted next to the Adder. Interconnect wiring and more testing is next.

August 7,2020 - I have mounted the first Accumulator bit to the main board and now working on the other three bits.

August 2, 2020 - A short video of testing out the Registers first bit.

Ah, register memory and doing it with diodes. If the reader has followed my prior adventures with Light Logic then it is already proven that Light Logic is up to the task already. Just like with IO, The registers for the LLTP will use D-Latch circuits and each bit will require four or five gates depending on the output method I end up using. Here is the basic D- Latch Nand logic followed by the actual first bit wired and tested.