Fundamentals of computer systems

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  • Created by: millard
  • Created on: 18-04-16 15:38
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  • Fundamentals of Computer Systems
    • Define a Computer System
      • A device that can RECEIVE data, STORE the data, PROCESS the data and OUTPUT the data
    • The importance of computer systems in the modern world
      • Can access data securely
      • Air traffic control
      • Global communicaton
      • Quality of life, bionic limbs
      • Helps save lives, faster ES response time
    • The need for reliability in computer systems
      • Life critical systems
        • Hospitals
      • Hard drive failure
        • Fired from job, if lose work and miss deadline
      • Data stored in databases
        • If data centre destroyed masses of information lost
      • The probability a computer system will give the expected output in a given timeframe
    • The need for professional standards in the development, use and maintenance of computer systems
      • It ensures that a device brought for one computer will work for anyother
      • USB, Universal Serial Bus
      • Bluetooth
      • ASCII, standard character set that allows all computers to convert binary to characters using the same values
      • HTML, ensures that webpages can be understood on any device
      • De Facto standards, popular standards that companies choose to use
      • Open standards, officially agreed upon by companies
    • The importance of ethical, environmental and legal consderations when creating a computer system
      • WEEE, Waste Electrical and Electronic Equipment - initiative that ensures hospitals and schools recycle old appliances
      • Refurbing old computers ensures that are reused
      • Sleep and Hibernation modes ensure that computers use less energy when not in use
      • Patent rights
        • Cannot use copy-righted designs to create new computers
      • Virtual servers, ensure that more of the physical server is in use
      • Ethical
        • Replacing workers with automated machines
        • Privacy - who can keep data about us and for how long?
        • Computer professionals - being honourable engineers


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