What are the advantages of an electronic ignition circuit?

Electronic ignition typically doesn't use a rotating cam and ignition points. So there is less mechanical wear involved. The voltage produced at the spark plugs tends to be higher and a little "cleaner," electrically speaking. An ignition advance mechanism would not be heeded if the design of the ignition module or "computer" were sophisticated enough.

However, there is one major disadvantage. If there is an EMP (electromagnetic pulse) blast that takes out all sorts of electronic devices, such an ignition system would be destroyed. So after a major nuclear war, cars that use this likely won't run. However, if it has a standard points ignition, it can.