This introduction covers The Language of Logic within Boolean Expressions for GCSE Computer Science. Revise Boolean Expressions in 3.4 Computer Systems for GCSE Computer Science with 17 exam-style questions and 22 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 1 of 12 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.
The Language of Logic
Boolean expressions are how we write logic in text form, like algebra for true/false values. Instead of drawing circuit diagrams, we can write "A AND B" or "NOT(A OR B)". Named after George Boole, who invented this mathematical logic in the 1800s - long before computers! His maths became the foundation of all digital computing. Every IF statement you write is a Boolean expression.
Practice questions for Boolean Expressions
Which Boolean operator produces an output of 1 only when BOTH inputs are 1?
State De Morgan's first law and give an example to illustrate it.