Lesson03

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Lesson03

  1. 1. FILE MANAGEMENT Introduction To IT Systems PC PASSPORTMatt Harkin harkinm@dumgal.ac.uk
  2. 2. PC personal computer most home users operate a PC can have multiple users used by one person at a timeMatt Harkin harkinm@dumgal.ac.uk
  3. 3. server computer that controls network activity most businesses have at least one physically used by network administrators used by many people at a time via the network connectionMatt Harkin harkinm@dumgal.ac.uk
  4. 4. embedde computing power to homed device entertainment smart TV is an obvious example may not look like a computer computer system within other devicesMatt Harkin harkinm@dumgal.ac.uk
  5. 5. desktop classic computer system most home users operate a PC has a separate monitor, keyboard, mouse comes with a base unit | system caseMatt Harkin harkinm@dumgal.ac.uk
  6. 6. laptop portable computing power touchpad used instead of mouse monitor folds into the casing most components are in a small casingMatt Harkin harkinm@dumgal.ac.uk
  7. 7. pda portable computing power wi-fi, 3g, gprs touchscreen or pen hand held device (palmtop computer)Matt Harkin harkinm@dumgal.ac.uk
  8. 8. smartphon friendly devices with powerful e apps keyboards and/or touchscreens+camera, music player, apps very popular and similar to pdaMatt Harkin harkinm@dumgal.ac.uk
  9. 9. console portable and home gaming lots of different types can be static and home based can be small and portableMatt Harkin harkinm@dumgal.ac.uk
  10. 10. sizes bit, byte, word, KB, MB, GB, TB 1 and 0 are combined in different ways – this is the language of a computer high voltage represents a 1, low voltage represents a 0 computers use electrical voltagesMatt Harkin harkinm@dumgal.ac.uk
  11. 11. sizes bit, byte, word, KB, MB, GB, TB Computer Language is called binary BIT BYTE WORD 1 or 0 8 bits 8 bytes Examples BIT BYTE WORD Bits Bytes Words 4Matt Harkin harkinm@dumgal.ac.uk
  12. 12. sizes bit, byte, word, KB, MB, GB, TB Computer Language is called binary KILOBYTE KB MEGABYTE MB GIGABYTE GB 1024 bytes 1024 kilobytes 1024 megabytes Examples KILOBYTE MEGABYTE GIGABYTE Kilobytes Megabytes Gigabyte 7Matt Harkin harkinm@dumgal.ac.uk
  13. 13. sizes put it into perspectiveMatt Harkin harkinm@dumgal.ac.uk
  14. 14. sizes put it into perspective WINDOWS 7 WINDOWS XP APPLE MAC OSXMatt Harkin harkinm@dumgal.ac.uk

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