Oh god I feel old. I remember being an excited schoolboy thinking how magic this was when it debuted.

davidwritesbugs 9 hours ago | parent | next [-]

I also remember being amazed, and did a forehead slap, when an old army bomb disposal man explained how, what I thought was an innocent device, was used by the IRA in bombs.

	▲	nickcw 9 hours ago \| parent [-]
		Ha. When I was a teenager I used to build 555s into timers for the same purpose using a no PCB rats nest construction. Though surprising the family at dinner with a small explosion was a much more innocent purpose.

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Brian_K_White 8 hours ago | parent | prev [-]

For me that is blue leds.

	▲	davidwritesbugs 8 hours ago \| parent \| next [-]
		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__ 3 hours ago \| parent \| prev [-]
		"rareleds" on Instagram is fantastic. Vintage LEDs set to apex twin and so on