I have an old 130-in-one kit with a 74LS00 quad NAND gate on it. What's the easiest thing to do with a NAND gate (besides using it for its intended purpose as a logic gate)? Build an oscillator! More specifically, a ring oscillator, formed by using the NAND gates as inverters. Three NANDs are wired in a ring. I expected to get 1 or 2 MHz from this configuration as the chips were late 80's low speed TTL... boy was I surprised when I fired up my oscilloscope... 35 MHz! From a '80s TTL chip. I wonder if I can go faster using only one stage. Might not be stable though.
I'm going to get a HP-IB compatible LaserJet soon so maybe I'll be able to print out things instead of struggling to get a digital camera to work on an oscilloscope screen (best mode was "Sports" probably due to the short exposure.)
I'm going to get a HP-IB compatible LaserJet soon so maybe I'll be able to print out things instead of struggling to get a digital camera to work on an oscilloscope screen (best mode was "Sports" probably due to the short exposure.)
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