Gr3mlin2008
New Member
Hi there
For as long as i can remember ive always wanted to make a well, count down time as you see in moves, like a bomb timer.
So i set out doing the research.
I've gone with a mm74c912 to drive the 6 Displays.
But appart from 555 timers, and premade kits, this would be the first project i have made that uses a IC. (I know, talk about bite-ing off more than i can chew) so what i wanted to know is, firstly, does anyone know of a different IC to use as i am useing commanly Anode(?) 7seg displays and i thnk this drive a com Cathode display... but on top of that, where do i go next? LOL does anyone have a circuit diagram?
I have to some how generate a BCD signal for this chip to read, i wouldnt have the foggest how to.. any help would be great!
Cheers!
For as long as i can remember ive always wanted to make a well, count down time as you see in moves, like a bomb timer.
So i set out doing the research.
I've gone with a mm74c912 to drive the 6 Displays.
But appart from 555 timers, and premade kits, this would be the first project i have made that uses a IC. (I know, talk about bite-ing off more than i can chew) so what i wanted to know is, firstly, does anyone know of a different IC to use as i am useing commanly Anode(?) 7seg displays and i thnk this drive a com Cathode display... but on top of that, where do i go next? LOL does anyone have a circuit diagram?
I have to some how generate a BCD signal for this chip to read, i wouldnt have the foggest how to.. any help would be great!
Cheers!