<p>None of them deals with light bulbs and power grid. You learn about principle of electronic circuits (tiny), computer chips, and communication signals at UR in these courses:</p>
<p>ECE 221 – Elec. Devices & Circuits ECE 200 – Computer Org.
ECE 241 - Signals ECE 222 – Integrated Circuits
ECE 230 – Electromagnetic Waves ECE 242 - Communications</p>
<p>They are interesting stuff.</p>