Science of Technology

This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong.

In some circuits, there is more than one switch that can turn on the output.  These circuits employ "**OR logic**", since the output will turn on with either switch A or switch B.  In electrical terms, these switches are placed in **parallel** branches, and there is a **junction** that allows the electrical current to flow in two different directions.  

In other circuits, there is more than one switch that can turn off the output.  These circuits employ "**AND logic**", since the output will only turn on if both switch A and switch B are connected.  In electrical terms, these switches are placed in **series**, with no junctions to allow the current to branch out.

Did you find any circuit boxes that could be described as turning on for:
  * A **OR** B **OR** C?
  * A **AND** B **AND** C?

Open these circuit boxes see if you can:
  * find the junctions in the OR circuit;
  * trace the series path for the AND circuit.

[[Bypass_Switches|Next: Bypass Switches]]

Science of Technology

User Tools

Site Tools

Page Tools