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FILE MANAGEMENT




   Introduction To IT Systems



               PC PASSPORT
Matt Harkin    harkinm@dumgal.ac.uk
PC               personal computer




                 most home users operate a PC

       can have multiple users

                 used by one person at a time

Matt Harkin   harkinm@dumgal.ac.uk
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 connection

Matt Harkin   harkinm@dumgal.ac.uk
embedde               computing power to home
d device              entertainment




                 smart TV is an obvious example

    may not look like a computer

                 computer system within other
                           devices

Matt Harkin   harkinm@dumgal.ac.uk
desktop               classic computer system




                 most home users operate a PC
    has a separate monitor,
       keyboard, mouse
               comes with a base unit | system
                            case

Matt Harkin   harkinm@dumgal.ac.uk
laptop              portable computing power




                touchpad used instead of mouse

 monitor folds into the casing

                most components are in a small
                          casing

Matt Harkin   harkinm@dumgal.ac.uk
pda              portable computing power




                           wi-fi, 3g, gprs

      touchscreen or pen

                   hand held device (palmtop
                          computer)

Matt Harkin   harkinm@dumgal.ac.uk
smartphon             friendly devices with powerful
    e                 apps




                 keyboards and/or touchscreens

+camera, music player, apps

                very popular and similar to pda

Matt Harkin   harkinm@dumgal.ac.uk
console             portable and home gaming




                      lots of different types
    can be static and home
            based

                   can be small and portable

Matt Harkin   harkinm@dumgal.ac.uk
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 voltages

Matt Harkin   harkinm@dumgal.ac.uk
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 4




Matt Harkin     harkinm@dumgal.ac.uk
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 7




Matt Harkin        harkinm@dumgal.ac.uk
sizes             put it into perspective




Matt Harkin   harkinm@dumgal.ac.uk
sizes             put it into perspective




                                         WINDOWS 7



                                        WINDOWS XP



                                         APPLE MAC
                       OSX


Matt Harkin   harkinm@dumgal.ac.uk

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Lesson03

  • 1. FILE MANAGEMENT Introduction To IT Systems PC PASSPORT Matt Harkin harkinm@dumgal.ac.uk
  • 2. PC personal computer most home users operate a PC can have multiple users used by one person at a time Matt Harkin harkinm@dumgal.ac.uk
  • 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 connection Matt Harkin harkinm@dumgal.ac.uk
  • 4. embedde computing power to home d device entertainment smart TV is an obvious example may not look like a computer computer system within other devices Matt Harkin harkinm@dumgal.ac.uk
  • 5. desktop classic computer system most home users operate a PC has a separate monitor, keyboard, mouse comes with a base unit | system case Matt Harkin harkinm@dumgal.ac.uk
  • 6. laptop portable computing power touchpad used instead of mouse monitor folds into the casing most components are in a small casing Matt Harkin harkinm@dumgal.ac.uk
  • 7. pda portable computing power wi-fi, 3g, gprs touchscreen or pen hand held device (palmtop computer) Matt Harkin harkinm@dumgal.ac.uk
  • 8. smartphon friendly devices with powerful e apps keyboards and/or touchscreens +camera, music player, apps very popular and similar to pda Matt Harkin harkinm@dumgal.ac.uk
  • 9. console portable and home gaming lots of different types can be static and home based can be small and portable Matt Harkin harkinm@dumgal.ac.uk
  • 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 voltages Matt Harkin harkinm@dumgal.ac.uk
  • 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 4 Matt Harkin harkinm@dumgal.ac.uk
  • 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 7 Matt Harkin harkinm@dumgal.ac.uk
  • 13. sizes put it into perspective Matt Harkin harkinm@dumgal.ac.uk
  • 14. sizes put it into perspective WINDOWS 7 WINDOWS XP APPLE MAC OSX Matt Harkin harkinm@dumgal.ac.uk