T he conscience functions somewhat like a computer. A computer is programmed to respond in specific ways to specific incoming information. Also, it responds to incoming information based on the commands it has been programmed to follow. When I click my word processing application, my computer knows to open my word processor. When my computer receives the copy command, it copies whatever I have selected to copy.
Computers are smart, but for the most part, they are simply responders.
The conscience is a responder as well. It responds to certain input the way it has been instructed to respond. God has programmed every man and woman's conscience to respond in particular ways to certain data. God has written, or programmed, His moral code into the heart of every man and woman. We are born with it.