EEVblog #801 - How To Design A Digital Clock

The next step for Ahmed Mohamed How to design your own digital clock from 4000 series CMOS chips. Dave reverse engineers a DIY clock he built back in the 1980’s as a teenager (he lost the schematics, twice!) Before the days of microcontrollers, cheap PCB’s, and internet mail order parts, you built stuff on veroboard using discrete parts from your junk bin salvaged from old teardowns. Does it use Texas Instruments chips from Radio Shack? :-D Schematic: Forum: Datasheets of all your favourites: EEVblog Main Web Site: The 2nd EEVblog Channel: Support the EEVblog through Patreon! EEVblog Amazon Store (Dave gets a cut): T-Shirts: Donations: Projects: Electronics Info Wiki: 💗 Likecoin – Coins for Likes: @eevblog/dil9/hcq3 Теги: digital clock,clock,diy clock,how to,ahmed mohamed,bomb,school,hoax bomb,movie bomb,hoax,police,president,obama,white house,texas,chips,radio shack,schematic,circuit,wires,wiring