Topic 27 Resources

Students need to understand:

  • simple logic diagrams using the operations AND, OR and NOT
  • truth tables
  • combining Boolean operators using AND, OR and NOT to two levels
  • applying logical operators in appropriate truth tables to solve problems

Choose from the following to help you learn:


CAMBRIDGE Computer Science: 
Pages 47-51. Sections "Logic gates", "AND", "OR", "NOT" and "Logic circuits" which continues on to top half of page 51.
ROBSON & HEATHCOTE Computer Science (9-1):
Page 116, Sections "Logic diagrams", "Logic gates and truth tables" "AND", "OR", "NOT" and "Combining logic gates into logic circuits" which continues on to the top half of page 119.
SUSAN ROBSON GCSE Computing(3rd edition): 
Page 27-28, Section "Truth tables"
SUSAN ROBSON GCSE Computing(2012): 
Page 39, Sections "Truth tables" and "Logic diagrams"
AXSIED GCSE Computer Science (3rd edition):
Page 135. Section R68 "Logic Gates"
ROUSE & O'BYRNE GCSE(9-1) Computer Science:
Page 168-172. Section "Logic" continues onto top half top of Page 172.

Web Sites

BBC Bitesize: Page 1 from Logic gates to Page 5  
Cambridge MOOC: Section 6: Logic gates AND, OR, NOT and Section 7: Truth tables 
Wikipedia: Logic gateNOTAND and OR (4 articles)
Simple Wikipedia: Logic gateNOT gateAND gate & OR gate  (4 articles) 
Teach-ICT: Sections 4 to 8 


ComputerScienceTutor: Watch from 3:00 to 10:45. Logic gates  

ComputerScienceTutor: Watch all. Combining logic gates 

MrDMcKnight: Watch all (5:21). Logic gates 

MrDMcKnight: Watch all (5:58). Logic gates 

Last modified: Wednesday, 23 September 2020, 8:54 AM