Posted: Tue, 05/15/2018 - 1:01 pm EDT
Logic Gates, Truth Tables, and Binary.
There is enough here to make a lesson with exercises and other useful resources.
Power Point to teach from and PDF for practice or assessment.
Additionally, here is a site that helps students play with logic and design their own models as an extension of going through the materials attached.
Shared under the "Creative Commons Attribution-Share Alike 3.0 licence".