AQA Computer Science GCSE
Boolean Logic Gates
Boolean Logic Gates are switches which can take Boolean inputs and provide an output - again as a Boolean value. Remember, Boolean values are either True or False.
Logic Gates - intro slides from class
There are four logic gates you need to know: AND, OR, XOR (the evil one) and NOT (the "easy" one which you'll get wrong more times than you think).
Four Logic Gates - a slide on each to make notes from
There's also a textbook double page on these, which will help if you get confused or stuck.
Logic Gates Textbook - a double page spread with questions
A table - can you fill it in correctly?
Logic Gates and Circuits
You might have to draw a simple logic circuit diagram in an exam.
Logic Quickfire - slides from class
Example logic gates - with circuits to draw
More complex Truth Tables
Truth tables get more complex when you start to do more things to the inputs. And especially when you start to add a third input.
Slightly more complex Truth Tables - a set of exercises to work through
Blank gates - another way of asking similar questions