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Stylized blueprint portrait of Hans Camenzind

Hans Camenzind

1934 – 2012

Designed the 555 timer, the most-produced chip ever.

A Swiss-American engineer, Camenzind designed the 555 timer in 1971 under contract to Signetics — the most-produced integrated circuit in history, still made by the billion.

The 555 astable and monostable tools here compute his circuit. He designed it largely alone, and it outlived nearly every chip of its era.

Portrait: a stylized blueprint-line rendering, not a photograph.

Contributions in the toolbox

  1. 1971

    Designs the 555 under contract to Signetics.

    555 Timer — Astable
  2. 1971

    555 designed at Signetics — monostable mode built in.

    555 Timer — Monostable

Calculators built on this work

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