sentence: Modern computers are very different from early computers.
sentences_after: 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. Computers are useful for many different jobs where automatic functions are useful. Some examples are controlling traffic lights, vehicle computers, security systems, Washing machines and Digital Televisions.
concept_name: modern computer
headings: Computer
categories: Tools