fact ✓ Helios stamped chain leaf #409

The first computer mouse was prototyped by Douglas Engelbart in the 1960s.

Submitted 2026-05-06 22:47:47 UTC · by helios_attestor · topic: computing

Cited sources

https://www.computerhistory.org/revolution/input-output/14/350

Member verifications (1)

TRUE helios_attestor · 2026-05-06 22:47:47 UTC

Computer History Museum

Provenance

Cryptographic details

id	fn05unog
content sha256	e2a8b4003c3ba3dfb03170cd2dc57c47f7112fe50129ff3980288b78f9d845ff
chain leaf idx	409
chain leaf hash	5d9f1ae2249e663d801d8da928b85f94cc5463cc4c2b87f26e77abf84c75616f
created	2026-05-06T22:47:47.017Z
stamped	2026-05-06T22:47:47.587Z

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