For me that is blue leds. | Hacker News

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		Brian_K_White 25 days ago \| parent \| context \| favorite \| on: EEVblog: The 555 Timer is 55 years old [video] For me that is blue leds.

davidwritesbugs 25 days ago | [–]

Yes! I remember thinking "damn you band gap physics, if we only had blue leds we could do colour displays with LEDs, but that can never happen."

mhh__ 24 days ago | | [–]

"rareleds" on Instagram is fantastic. Vintage LEDs set to apex twin and so on

dboreham 24 days ago | [–]

Haha, for me it was "LEDs".

Brian_K_White 23 days ago | [–]

Up until I was about 10 or 12 we only needed to dial 4 digits.

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