Hi,
I have been playing with pics over the last few weeks and have managed to do a few simple circuits like flashing leds, displaying txt on an lcd etc. I have worked through a few tutorials writting in both assembly and c. I prefer writing in c.
Now that I have learnt the basics I have decided to go further by making a digital alarm clock but I dont know where to go from here.
I assume that I will need to usd timers? but how? do I use 3 timers (hours, mins, secs) or just one running count and use math to get the hours, mins, secs?
Will I need an external oscilator or crystal? how precise is the built in one?
I am sure there is more questions but I cant think if any at the moment.
So far I have been using the 16f628 and a hitachi lcd. I know I will likely need a 16f877 for future projects but the 628 should still be ok for this project?
thanks