computing

computing

1. describing a computer system

   • a computer system is a device that can input, manipulate and output data. it can take a set of instructions and preform a task

2. computers in the modern world

   • the first phone call was on the 3rd of April 1973
   • the first digital compact cd was on the market was released in 1989
   • the first digital satellite television broadcast was 1989
   • digital terrestrial television launched in the UK on 15th November 1998
   • the first portable mp3 launched in march 1998
   • the first ipod was in 2001
   • the first website was in may 1970

3. reliability

   • a system that is reliable is always working
   • it doesn't have glitches
   • it does what the end user wants it to do
   • you can trust it work efficiently
   • you can trust to save files safely
   • make sure it is safe
     • check kit
     • have more than one person check it
     • new kit so it doesn't get too old
     • extra machine
     • up to date software
     • wipe files that are not used
     • upgrade hardware
     • buy it from a reliable company
     • make sure you're not the first to use it

4. storing stuff safelty

   • back up to external hard drive
   • continual backup
   • concrete chamber in secret location
   • each day taken of site

5. eight principals of the data act 1998

   • data must be processed fairly
   • it can only be used for purposes they say it will
   • they should only hold data they actually need
   • data must be accurate and up to date
   • data must not be held longer than it is needed for
   • data will be used in accordance with your rights
   • data will be kept safe
   • data will not be transpired to any country where they don't have similar laws