Latest Kits
Computational Hardware for Pragmatists

Due to the Covid-19 situation, the shipment of ARITH-MATIC kits is currently suspended.

ARITH-MATIC is a computational hardware project with the aim to engineer a range of DIY electronic kits which explore the guts of computing.

ARITH-MATIC's flagship kit - S1-AU Mk1 - is a 4-bit arithmetic unit. It is designed with classic 7400 series ICs and enables you to explore the arithmetic of computing. The second - S1-MU Mk1 - uses a LY62256PL RAM IC and explores the mechanisms required to read and write data to a memory. And the newest kit - STEM-X1 - is a 4-bit adder / subtractor - perfect for exploring the basics of binary arithmetic.

The kits are not only a pragmatic introduction to computing hardware and digital electronics, but also a unique soldering exercise for computing enthusiasts, hobbyists, students and makers.

Explore the fundamentals of computing with the ARITH-MATIC S1-AU Mk1

The kits contain all the through-hole electronic components you’ll need to build your own computational hardware and enable you to visually trace computing operations through a series of on-board ultra bright LEDs - so you can really see and understand how different parts of a computer work!

Along with the comprehensive 'Operator’s Technical Manuals', ARITH-MATIC's beautifully engineered PCBs will guide you through construction and operation. All you need to bring is your trusty soldering iron and a steady hand.

ARITH-MATIC kits are a perfect resource for anybody wanting to learn more about the fundamentals of computing and a unique project for those wishing to rediscover the joy of 7400 series logic.

To learn more, please visit the ARITH-MATIC DIY Electronic kits page.

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"This 4-bit arithmetic logic unit looks great and teaches important lessons about computing." - Stephen Cass, IEEE Spectrum Review

Learn more about computational hardware: