Easton made this 4000-series CMOS 24-hour clock as a final high school electronics class project. Rather than using a microcontroller he chose to use CMOS ICs including a 4060 and 4013 to generate the 1Hz signal. This is the latest entry in the Open 7400 Logic Competition. For the last couple months a friend and […]
Tag Archives: 7400 entry 2012
7400 competition entry: DIY 6502 computer
6502s are 8bit microprocessors from the 70s developed by MOS Technology. Sweet thing is they come in DIP-40 trough hole packages, although we doubt an emulator based on 7400 logic chips will fit the same package. Check out André’s DIY 6502 computer for the Open 7400 Logic Competition. I have built a DIY 6502 computer, […]
7400 competition entry: 4049 inductance meter
Mike’s 4049 inductance meter converts inductance into voltage, which can be read via any multimeter. Check out the latest Open 7400 Logic Competition entry: All the decent multimeters nowadays seem to have a built in capacitance meter, but only a few of the really expensive ones have a built in inductance meter. Dedicated inductance (LCR) meters, of course, […]