Hello,can someone help me to solve the problem about the coding for digital alarm clock with recordable sound using:
1) PIC 16F877A
2) CRYSTAL 20 MHZ
3) ISD 2560P
4)RTC DS 13707
There are many parts to this project, but none are really rocket science. What specific parts do you know how to do what what parts do you need help with? Some obvious parts are:
Machanical housing
Power supply
User input
Display
Timekeeping
Audio recording
Audio playback
I am not familliar with your clock chip. Read the data sheet from the manufacturer and any application notes they have. The manufacturer wants to make it easy to use their chips and they will help you.
I'm using DS1302 - also from Dollas. A good read of the datasheet is the essence of getting to know how to play with it - even in the case you can get some sample code to start with.
What display do you plan to use? As SherpaDoug said, no part of this project is rocket science. But there are indeed plenty of pitfalls over there if you are a beginner.
Making your question more specific would help you get more concrete help/information.