Like how my calculator runs off of the the tiny solar panel that is built in and... | Hacker News

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olyjohn on July 9, 2024 | parent | context | favorite | on: Don't use 7-segment displays (2011) [pdf]

Like how my calculator runs off of the the tiny solar panel that is built in and is powered by ambient light in the room.

gedy on July 9, 2024 [–]

I think some folks might be thinking of the older light-emitting 7 segment displays which used more power.

bobmcnamara on July 10, 2024 | [–]

Ah my bad, I was thinking of the early zero power seven segment numeric tape printers.

The numitrons used a ton of power. Or was that VFDs?

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