3 ms·

For me that is blue leds.

• davidwritesbugs 6mo 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__ 6mo ago
  "rareleds" on Instagram is fantastic. Vintage LEDs set to apex twin and so on
• dboreham 6mo ago
  Haha, for me it was "LEDs".
  • Brian_K_White 6mo ago
    Up until I was about 10 or 12 we only needed to dial 4 digits.