Many of us here at TUAW were big fans of Due when it arrived on the App Store. It featured a no-nonsense design that allowed you to set timers and timed reminders quickly and intuitively, plus a few ...
This 2-bit adder was a lot of work to build. It uses a total of thirty-six 555 timers and it does have the option of adding or subtracting numbers. It’s a rather unorthodox use of the part, depending ...
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