someone please help as soon as possible
INTERFACE DAC0808 AND SERIAL COMMUNICATION TO GENERATE WAVEFORMS WITH REQUIRED FREQUENCY(SQUARE,TRIANGLE,SAWTOOTH) .AUTOMATICALLY CHANGE THE WAVEFORM & FREQUENCY UPON RECEIPT OF NEW COMMAND FROM PC.
So you got a school assignment, and have now spent most of the time doing something else?
Well - the assignment isn't really hard so if you activate the afterburner you just might manage to read up on what to do and how to do it and write a program+documentation to hand in before the deadline. But then you can't afford spending time waiting for forum members to help you cheat by supplying ready-to-use solutions.