That Blue Square Thing

Syllabus content:

Unit 4 Boolean logic content – just this section

Note: this syllabus content is a slightly amended version of the one published freely on the web by AQA. I have made very minor adjustments to remove some content less suitable for students to use and it is presented here simply to allow the children I teach to download a usable copy of the syllabus content. It is copyright AQA and reproduced here simply to make access easier for students. No attempt to claim copyright is being made, although I could have copied the text into my own interpretation...

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

Logic diagrams to interpret

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