This logic probe can be selected to operate on TTL or CMOS logic levels, depending on switch S1. A string of resistors associated with switch S1 sets the threshold levels for a window comparator ...
The familiar five volts standard from back in the TTL days always struck me as odd. Back when I was just a poor kid trying to cobble together my first circuits from the Forrest Mims Engineer’s ...
I learned from my dad to never be afraid of taking things apart to see how they work and he taught me just about everything I know about mechanical things. I have spent countless hours working with ...
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