All circuit worked properly, and we confirmed the functionalities of the macros. During this lab, I encountered a problem. When copying components that were already annotated (i.e. reference codes already given to the components), they were given the same reference codes. For example, if I copied an INV macro with U1 reference code, there will be two INVs with the same reference codes U1. ``Annotate Schematic'' in OrCAD did not solve this problem. Hence I had to change all the reference codes.
