Website link to types of switches

Here is a useful link to explain about the different types of switches, namely SPST, SPDT, DPDT.

http://www.learningaboutelectronics.com/Switches/

Slideshare: Ideation with Attribute listing

Here is the link to the slides on Ideation with Attribute listing:

https://www.slideshare.net/Caksback/ideation-with-attribute-listing