Moudle 1.3

Moudle 1.3

1. Difference between data and instructions

   • Instructions
     • Programs
     • Commands by user
     • User responses
   • Data
     • Text
     • Numbers
     • Graphics

2. Wireless mouse and keybord

   • Short range raido waves
     • Bluetooth
       • communicate wirelessly
         • 10m
     • Wireless adapter via USB
   • Pros
     • Less cluter
     • Wider range of movement
   • Cons
     • Require batteries
     • More expensive
     • Easily stolen
     • Interference

3. Printers

   • Inkjet printers
     • PROS
       • microscopics dots-ink
       • Cheap
       • Cheaper cartridges
       • Good quality
     • CONS
       • Cartridges more expensive long term
       • Slower
   • Laser Printers
     • PROS
       • More pages
       • toner cartridge
       • Cheaper to run
       • Faster
     • CONS
       • More expensive to buy

4. Storage devices

   • Hard drive
     • C: drive
     • Largest storage device
     • GB & TB
     • Program & documents
   • External hard drive
     • Mobile
     • Handy 4 backup
     • via USB port
     • no power supply
       • from PC
   • Flash drives
     • Cheap
     • use electronic memory
     • power via USB
     • up to 256GB
     • CONS
       • easy to lose
       • easily stolen
       • can fail