I need to design two digital integrators to solve a 2nd order differential equation. It needs to take both AC/DC. I've been told that if my input is DC, that my output should be a ramp. If my input is a sine wave the output should be a cosine wave (shifted wave form). The IC's to be used are the following: ADC, DAC, adder, u/d counter, comparator, register. Not all of these IC's are necessary to make this work. e.g. One can use just adders and a ADC/DAC to get it to work.
I'm not very familiar with Digital design, and would appreciate any help or direction in this area. I've been "playing around" with multisim a bit with no avail.
My goal is to design the circuit with multisim, replicate it onto a breadboard, then a PCB.