Supersized chip family gathers for the 54th anniversary of the Intel 4004 CPU — 4001 ROM, 4002 RAM, and 4003 shift registers feature in a reconstructed Busicom calculator build

November 23, 2025

, By Tom’s Hardware

Supersized chip family gathers for the 54th anniversary of the Intel 4004 CPU — 4001 ROM, 4002 RAM, and 4003 shift registers feature in a reconstructed Busicom calculator build

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A sneak preview of a complete MCS-4 computer, built from discrete transistors, has been shown off to mark the recent data-analytics-id=”inline-link” href=”https://www.4004.com/” data-url=”https://www.4004.com/” target=”_blank” referrerpolicy=”no-referrer-when-downgrade” data-hl-processed=”none” data-mrf-recirculation=”inline-link”>Intel 4004 anniversary. In the picture below, you can see the calculator interface flanked by seven hand-wired ‘chips’ that implement the entire original Busicom 141-PF calculator logic in hardware. That means those framed PCBs you see are supersized remakes of the Intel 4004 CPU (the largest at center), plus 4001 ROM, 4002 RAM modules, and 4003 shift registers.

Intel 4000 chip family get together — Center bottom:…

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Supersized chip family gathers for the 54th anniversary of the Intel 4004 CPU — 4001 ROM, 4002 RAM, and 4003 shift registers feature in a reconstructed Busicom calculator build

November 23, 2025

, Published By Tom’s Hardware

Supersized chip family gathers for the 54th anniversary of the Intel 4004 CPU — 4001 ROM, 4002 RAM, and 4003 shift registers feature in a reconstructed Busicom calculator build

A sneak preview of a complete MCS-4 computer, built from discrete transistors, has been shown off to mark the recent data-analytics-id=”inline-link” href=”https://www.4004.com/” data-url=”https://www.4004.com/” target=”_blank” referrerpolicy=”no-referrer-when-downgrade” data-hl-processed=”none” data-mrf-recirculation=”inline-link”>Intel 4004 anniversary. In the picture below, you can see the calculator interface flanked by seven hand-wired ‘chips’ that implement the entire original Busicom 141-PF calculator logic in hardware. That means those framed PCBs you see are supersized remakes of the Intel 4004 CPU (the largest at center), plus 4001 ROM, 4002 RAM modules, and 4003 shift registers.

Intel 4000 chip family get together — Center bottom:…

Disclaimer

We strive to uphold the highest ethical standards in all of our reporting and coverage. We StartupNews.fyi want to be transparent with our readers about any potential conflicts of interest that may arise in our work. It’s possible that some of the investors we feature may have connections to other businesses, including competitors or companies we write about. However, we want to assure our readers that this will not have any impact on the integrity or impartiality of our reporting. We are committed to delivering accurate, unbiased news and information to our audience, and we will continue to uphold our ethics and principles in all of our work. Thank you for your trust and support.

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3 best Starz shows you really need to stream

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Early Black Friday Sales on Top-Rated Robot Vacuums and Mops From iRobot, Roborock, and Shark Will Save You Hundreds

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