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SYSTEM COMPONENTS
CPU/PROCESSOR The CPU refers to the microprocessor
chip. Sometimes the Tower is called the
CPU. Its speed is measured in Megahertz
(MHZ) (Millions of cycles per second) or
Gigahertz (GHZ) Billions of cycles per
second. (A cycle is the time required for the CPU to execute
an instruction step).
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SYSTEM COMPONENTS
Ram Random Access Memory Ram is the memory used by the computer
to run programs.
The amount of Ram available willdetermine how fast a program will run andhow many windows can be open at onetime.
Ram memory is considered Volatilebecause it disappears when the power isturned off.
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SYSTEM COMPONENTS
Hard Drive The Hard Drive is the computers main,
long term storage.
It is referred to as non-volatile storage,because it does not disappear when the
power is turned off.
The size of the Hard Drive is measured in
Gigabytes. (Billions of Bytes).
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RAM VERSUS HARD DRIVE
If we use the analogy
of a desk: Then the
work we are doing on
the desk top would beusing the RAM and
the work we store in
the file drawers would
be on the HARDDRIVE.
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SYSTEM COMPONENTS
Mother Board (This is where most of the
electronics is located).
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SYSTEM COMPONENTS
Case (Tower,Chassis,Box)
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SYSTEM COMPONENTS
Modem (Modulator
Demodulator). (Used for internet access
with phone line).
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SYSTEM COMPONENTS
Power Supply
250 500 Watts
DO NOT OPEN (This is the power source
that makes everything go).
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SYSTEM COMPONENTS
Audio Card This is the voice of your
system).
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SYSTEM COMPONENTS
Floppy Drive
1.44 MB (This item is fast becoming
obsolete).
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SYSTEM COMPONENTS
Network Card (Used to connect to high
speed internet access e.g.
Cable or DSL lines).
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SYSTEM COMPONENTS
Tape Drive Can store
Gigabytes of data.
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SYSTEM COMPONENTS
Video Card (Provides visual images to
the monitor. Also used in
computer games, to provide
additional memory for visualeffects).
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PERIPHERALS
Monitors
CRT Vs LCD
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PERIPHERALS
Printers (Might be Ink Jet, Bubble Jet,
Laser or whatever the
manufacturers invent
tomorrow).
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PERIPHERALS
Video Cameras
(Also called
webcams)
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POWER PROTECTION
Uninterruptible Power
Supply
(UPS) 280 VA 400
VA
(Essentially a battery
back-up in case of a
power failure)
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KEYBOARD
The Keyboard
(This is the primary
input device)
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KEYBOARD
Alphanumeric Keys
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KEYBOARD
Numeric Keypad
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KEYBOARD
Enter (Return) Key
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KEYBOARD
Spacebar
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KEYBOARD
Modifier keys:
CTRL, ALT, SHIFT
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KEYBOARD
State keys: Caps,
Scroll, Numlock
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KEYBOARD
Windows keys
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MOUSE
Holding the mouse
Grip between thumb
and ring finger
(Right handed grip
shown, Lefties use
other hand)
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MOUSE
Mouse Pointer
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MOUSE
Left Clicking
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MOUSE
Right clicking
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MOUSE
Double clicking
(Use the left side,
Click twice)
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MOUSE
Click and drag
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MOUSE
Scroll wheel and
optional buttons
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SOFTWARE
Operating systems
Applications Data
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OPERATING SYSTEMS
MS-DOS
Windows 95,98,Me
Windows NT,
2000,XP
Linux
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APPLICATIONS
MS Word
(Your basic Word
Processor)
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APPLICATIONS
MS Excel
Your basic Spread Sheet)
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APPLICATIONS
MS Power Point
(For sales
presentations)
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APPLICATIONS
MS Outlook
(Your desktop Personal
Information Manager,
(PIM))
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APPLICATIONS
MS Internet
Explorer
(Your internet
Browser)
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APPLICATIONS
Windows Calculator
(Your basic
calculator, alsoavailable is a
scientific calculator)
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APPLICATIONS
WordPerfect Adobe Acrobat
Lotus 1-2-3 Photoshop
QuickBooks Notepad CorelDraw WinZip
HyperCam Media Player
Photo Paint StarCraft ETC. ETC.ETC. ETC. Ad Infinitum
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DATA
Letters written using a word processor like
MS WORD.
Spread sheets designed in EXCEL. Presentations created in Power Point
Music on a CD.
Photos from your digital camera
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COMPUTER CAVEATS
Beverages in open
containers are EVIL.
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COMPUTER CAVEATS
Magnets
(They destroy Data
on floppy drives and
hard drives)
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COMPUTER CAVEATS
Laser Printers and Power.
Keep PC off the floor.
When in doubt Reboot.
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COMPUTER CAVEATS
Save your work often.
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COMPUTER CAVEATS
Power Strips
Use the Power
buttons on the PC
and peripherals.
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COMPUTER CAVEATS
Dont eject a floppy
when the light is on.
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COMPUTER CAVEATS
Keep floppies out of
sunlight.
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COMPUTER CAVEATS
Proper handling of
CDs
OK to wash CDs in
mild soapy water orget a CD cleaner
(inexpensive)
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COMPUTER CAVEATS
Dont push the CD
tray in use the
button.
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COMPUTER CAVEATS
Dust Kills
Its a good idea to
blow the dust out of
your computerregularly.
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COMPUTER CAVEATS
STATIC KILLS!
Get yourself an anti
static strip or mat.
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TIME FOR A STRETCH BREAK
TIME TO GET UP AND STRETCH
CLEAN YOUR GLASSES
GO POTTY IF YOU HAVE THE URGE LETS TAKE A TEN MINUTE BREAK
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AN INTRODUCTION to
WINDOWS XP
This is the operating system most
of us will be using
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FILES AND FOLDERS
Keyboard Word Access Excel PowerPoint
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command
Ctrl-A Select entiredocument
Select all Select all Select all
Ctrl-B Bold Bold Bold Bold
Ctrl-C or F3 Copy Copy Copy Copy
Ctrl-F n/a Find Find n/a
Ctrl-G Go to n/a n/a n/a
Ctrl-H n/a Replace text n/a n/a
Ctrl-I Italics n/a n/a Italics
Ctrl-M n/a n/a Format anumber
Add (create)slide
Ctrl-N Newdocument
Newdocument
Newdocument
Newpresentation
Alt-N n/a Create a newobject
n/a n/a
Ctrl-O Open Open Open Open
Ctrl-P Print Print Print Print
Ctrl-Q Quit Quit Quit Quit
Ctrl-R n/a New record Fill Right n/a
Ctrl-TAB Save as Display Page Save as n/a
Ctrl-S Save Save Query Save Save
Ctrl-U Underline n/a Underline Underline Text
Ctrl-V Paste Paste Paste Paste text
Ctrl-X Cut Cut Cut Cut
Ctrl-Z Undo Undo Undo Undo
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Keyboard
command
Word Access Excel PowerPoint
F1 Help Help Help Help
F7 Spell/grammar check
Spell check Spell check Spell check
Ctrl-[ n/a n/a n/a Decrease fontsize
Ctrl-] n/a n/a n/a Increase font size
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Shortcuts when selecting text
Selection Task Shortcut
Select adjacent text Click and drag over text
Select a word Double clickon the word
Select a line Triple clickon the lineSelect a paragraph Click 4 times in the paragraph
Select from the insertion point to the
beginning or end of a paragraph
Press Shift-Option-Up arrow or
Shift Option-Down arrow
Select an extended section Click at one end of the section,
then Shift-clickat the other end
Select a whole document Ctrl-A ortriple clickin selection
area
Select from the insertion point to the
beginning or end of a document
Press Shift-Ctrl-Home orShift-
Ctrl-End
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THE WIMP INTERFACE
WINDOWS ICONS
MENUS
POINTERS
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WINDOWS
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ICONS
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MENUS
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POINTERS (CURSORS)
I-beam cursor
(which follows the roll of the mouse)
Insertion point cursor
F letcher
(Which flashes on and off, and is positioned
using the I-beam cursor and a click of themouse button)
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BREAK POINT
Lets get some hands on experience
Find the Windows key.
Bottom row second key from the left side.
Press once, (this is the same as left
clicking on the start button).
Bring the cursor arrow over the All Programs
Arrow head. Notice how the program files are displayed.
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FIND MICROSOFT WORD(LEFT CLICK)
Microsoft Word.lnk
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Microsoft word
FIND EXCEL
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FIND EXCEL
LEFT CLICK
Microsoft Excel.lnk
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MICROSOFT EXCEL
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FIND POWERPOINT
Microsoft PowerPoint.lnk
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POWERPOINT
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THE END
THE ENDTHE END
THE END