Building the TD4 4-Bit CPU from TTL Logic ICs
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Summary
A detailed walkthrough of building the TD4 4-bit CPU from scratch using 74-series TTL logic ICs, based on the Japanese book "How to Build a CPU" by Kaoru Tonami. The author translated the book themselves and documented the process of assembling the CPU on a PCB, including the challenges of sourcing components and understanding the architecture.
Key quotes
· 3 pulledThe TD4 is a famous 4-bit CPU featured in the book How to Build a CPU by Kaoru Tonami.
The book focuses on constructing a functional processor entirely from basic 74-series TTL logic ICs.
The project took a few months, as I had to translate the book myself to grasp the core concepts.
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