sentence: Computers are useful for many different jobs where automatic functions are useful.
sentences_before: Modern computers are very different from early computers. They are now very powerful machines that are able to do billions of calculations every second. Most people have used a personal computer in their home or at work.
sentences_after: Some examples are controlling traffic lights, vehicle computers, security systems, Washing machines and Digital Televisions.
concept_name: computer
headings: Computer
categories: Tools