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Bohan Xu

I’m an 8th grader who likes building CPUs to see how computers actually work and I want to study computer engineering at MIT.

Ohio, United States
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bohan-xu
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This user joined on 01/28/2026.

293
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A simple 4-bit CPU designed and built from scratch in 5th grade as my first step into real CPU design.
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Student Made TTL CPU

bohan-xuBohan Xu

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An 8th grader designing and building a real 8-bit CPU from scratch using custom architecture and discrete logic.
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TTL 8-Bit CPU better than Z80

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A complete 16-bit pipelined CPU with virtual memory, floating point arithmetic, and multiplication and division.
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16-bit Pipelined CPU with FPU

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Where DIY DIP/SSI/MSI CPU makers meet and discuss other TLA (three letters acronyms)
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lutetiumLutetium

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The Cambridge-1 features a 4-bit word size, 7400 series ICs galore and blinkenlights-a-plenty.
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arith-maticARITH-MATIC

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Watch someone redo the past exactly like it is then pay 10,000 dollars to have it cemented in silicon. You could be a part of this!
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A 4-bit RISC architecture exploring the question: "What if the RISC revolution happened in 1971 instead of 1981?"
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Yann Guidon / YGDES wrote 02/09/2026 at 00:37 • point

Welcome, young #Hackaday TTLers  !

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