Fundamentals of Computer Systems

Fundamentals of Computer Systems

1. Computer Systems

   • Computer Systems are used everywhere, from simple household items to large machinery. They can come in all shapes and sizes. the reasons computer systems are used everywhere is because they are: versatile, cheap, and small.
   • What is a system?
     • A system is a collection of parts that have a common purpose and work together to achieve its purpose. A system is only useful useful if it produces something, this is known as the output. A system receives inputs to create the output and there can be many processes within the system to turn the input into the output. It is possible to have multiple inputs and outputs. Some systems will interact with other systems and this called interfaces.
   • Examples of Systems
     • Underground Railway System
       • Passengers, electrical energy
         • Train movement
           • Journeys
     • Respiratory System
       • Food, oxygen
         • Oxidation
           • Energy, carbon dioxide, hydrogen oxide
     • Holiday booking system
       • Enquiry, deposit
         • Search, make booking
           • Tickets, reservations
   • Computer Systems
     • Key Term Dedicated: Something which is designed for one particular purpose

2. VFG

3. By Sarah Hill

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