Computing - Fundamentals of a computer system

?
View mindmap
  • Computing: Fundamentals of a Computer System
    • Computer Systems
      • Everywhere (dishwasher, a/c etc)
      • Input, process, (STORAGE), output
        • Input Devices: Mouse, keyboard.
        • Output Devices: Monitor, speakers, headphones etc
    • Types of Computer system
      • General purpose - can be used with several applications - Desktop pc
      • Dedicated - Used for a specific purpose - dishwasher
      • Expert - Designed to act like a human expert
      • Control - Used to control machinery - an industrial process etc
      • Embedded - One of many systems - Sat nav
      • Management information - Used to collect information for a boss
    • Standards
      • De Facto - Came about through common usage - Microsoft Word file type
      • De Jure - By law - PDF file type
      • Industry standards - By a non commercial organisation - International standards organisation
      • Propriety standards - Owned by organisation - Apple products only work with other Apple Products
      • open standards are publicly available ad produce collaboratively - HTML
    • Reliability
      • Can be a matter of life and death like a diagnosis machine
      • Data Integrity - Data being accurate and consistent throughout its life
        • Testing can uphold this, which tries to find errors. It is never 10% effective because it is time consuming, expensive, and software is complex
    • Ethical And Legal Issues
      • Ethical is morally right and legal is about following the law
      • It protects against things like fraud, unfair charging for goods, terrorism, unauthorised access to sensitive information
      • Cyber crime is crime committed with the aid of computers
    • Environmental issues
      • Computers contain dangerous substances when released: Cadmium, beryllium, flame retardants and lead.
      • Computers are sent to developing countries for disposal as there are no regulations
      • Energy used can be reduced by : virtual servers rather than digital, solid state storage, automatic standby switching, optimum a/c, efficient cooling, modern monitors

Comments

No comments have yet been made

Similar Computing resources:

See all Computing resources »See all Computer systems resources »