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When did integrated circuits first enter your life?

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Connecteur:
For me it was 1975, when the first affordable electronic calculators began to appear.  For several years before that, I had read a considerable amount about the coming revolution in microelectronics, but it was like a future dream, not unlike the way hydrogen power is today.  In 1976 I pulled the cover off a machine monitor and I was amazed to see rows of IC chips on the board.  It all happened much quicker than I expected.

srb1954:
My first experience in using ICs was in 1974 for my final year project at university.  I used two 741 op amps in a control circuit.

eti:
On a cold and snowy walk back to my log cabin, Christmas Eve 1671.

Circlotron:
Late 1974 I built a small audio amplifier using an LM380 to drive a speaker from a crystal set. Had a battery that was actually two 9V batteries in a single cardboard package for the split supply. Built it rats nest fashion. Up until then had done mostly vacuum tube stuff. September 1974 I also bought my first calculator, a Texas Instruments TI-251010 that I still have. Still works just fine. https://www.ithistory.org/db/hardware/texas-instruments/texas-instruments-ti-2510

BravoV:
The 1st IC I owned and used, 555.  ;D

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