Computer Systems

Computer Systems

1. Desktop

   • USES
     • Web searching, email
     • Running applications in home and office
   • ADVANTAGES - USUALLY HAVE
     • More internal memory
     • More hard disk space
     • Faster processors
     • Better graphics processors
     • Larger monitors
   • DISADVANTAGES - USUALLY HAVE
     • Fixed position
     • Larger physical size/take up more space
     • Too heavy to carry about

2. Laptop

   • USES
     • Same as desktop
   • ADVANTAGES
     • Small/light weight
     • Portable
     • Usually connects to the internet via wireless
     • Can be used anywhere
   • DISADVANTAGES
     • Easily lost, broken or stolen
     • Small screen or keyboard can lead to health issues for user
     • Specification is not as high for desktops costing the same amount of money
     • High specification laptops are expensive and not as portable
     • No built in mouse

3. Netbook

   • USES
     • Same as laptops
   • ADVANTAGES
     • Same as laptops
   • DISADVANTAGES
     • Same as laptops
     • But even smaller in size
     • Limited specification

4. Embedded

   • USES
     • Used in domestic and industrial appliances
   • ADVANTAGES
     • Perform one task, e.g. running a microwave cooker
     • Main instructions cannot and do not need to be altered by user
     • User can input simple instructions, e.g. wash temperature

5. Smartphone

   • USES
     • Mobile telephones with computer facilities
   • ADVANTAGES
     • Same as laptops
     • Can connect by 3G, 4G and WiFi
   • DISADVANTAGES
     • Same as laptops
     • Even smaller in size
     • Limited specification
     • Have non-standard operating systems

6. MAINFRAME + SUPERCOMPUTERS

   • USES
     • Large and very fast computers used in banks, insurance firms and unis
   • ADVANTAGES
     • Can process very large amounts of data quickly
     • Very fast calculations
   • DISADVANTAGES
     • Expensive
     • Take up a large amount of space