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Today in History: Sinclair Research launches pioneering ZX81 home computer

3/5/2026

23 5

Summary

Story summary

On March 5, 1981, Sinclair Research launched the ZX81, a groundbreaking home computer designed for affordability and accessibility. Manufactured in Dundee, Scotland, it quickly became popular, selling over 1.5 million units globally. The ZX81 marked a significant step in making computing available to the general public, paving the way for future home computers.

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Story summary

On March 5, 1981, Sinclair Research launched the ZX81, a groundbreaking home computer designed for affordability and accessibility. Manufactured in Dundee, Scotland, it quickly became popular, selling over 1.5 million units globally. The ZX81 marked a significant step in making computing available to the general public, paving the way for future home computers.