(2) The CAPC processor is self-contained in the sense that the I/O unit(s) is contained in itself.
(2a) Design and draw a schematic (in LogicWorks 4 style) to take out the I/O unit(s) from the CAPC design and try to make a CAPC processor "chip" based on your CAPC processor. Especially, describe in detail the pin configuration, that is, function of output pins and input pins of CAPC "chip".