Topic one computer systems

Topic one computer systems

1. Environmental issues

   • Raw Material
     • Lead
     • Copper
     • Gold
     • tantalum
     • silver
   • Advantages and Disadvantages
     • Disadvantages
       • Technological waste - also known as e-waste - sometimes contains poisonous chemicals and can be an environmental hazard.
       • Technology consumes energy. Computers require electricity, and most smartphones and tablets require recharging after just a few hours of use
     • advantages
       • Tablets and mobile phones use less energy than desktops and laptops as the hand-held devices use flash memory instead of hard drives and RISC CPUs instead of CISC CPUs.
       • Using email and working electronically means that less printing is required, and so less paper is used
       • Using systems like FaceTime, Skype and video conferencing can reduce the need for people to travel to meet each other, and so less fuel is used
       • People can work from home - which reduces commuting (less fuel is used) and means that less office space is needed
   • Virtual servers
     • Avantages and disadvantages
       • advantage
         • Makes the physical server do more than one thing it does many(saves energy and space)
       • disadvantage
         • All on one server
         • Administration needs a lot of knowledge

2. Standards in the computing industry