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