Jumpei Saito

The illuminated circuit boards of the 4-bit relay adder

4-Bit Relay Adder

A 4-bit adder developed in summer 2020 to learn how computers work.

2020System design and implementation with fTomo
  • digital electronics
  • relay logic
  • computing

In the summer of 2020, I developed this system with fTomo to learn how computers work.

Knowing that I would not be able to participate in RCJ because of entrance exams, we completed the implementation during the summer vacation.

We built a relay-based adder, a NAND-gate-based adder, and a system that compared their computation speeds.