Transcript Operating microcomputer

Operating Microcomputer
Chan sze man
3.1
Starting up the computer
3.1.1 Cool boot
The start-up of a computer
from a powered-down, or off
state.
Also called a hard boot.
Contrast with warm boot,
restarting a computer via the
operating system.
Starting up the computer
3.1.2 Warm boot
A warm boot is sometimes necessary
when a program encounters an error
from which it cannot recover.
On PCs, you can perform a warm
boot by pressing the Control, Alt,
and Delete keys simultaneously.
Also called a soft boot.
Contrast with cold boot, turning a
computer on from an off position.
Starting up the computer
3.1.3 Booting the
computer with a diskette
A boot disk will allow you to boot
off of a diskette instead of your
hard drive.
This diskette can be used to fix
error which may arise during the
lifetime of your computer.
To help load MS-DOS games or games
you may not be able to run from
Windows or MS-DOS because of high
memory requirements.
Starting up the computer
3.2
Operating input/output devices
3.2.1 Visual display
unit (VDU)
Visual display is just the
monitor.
Disadvantage
of using
a
Operating
input/output
devices
monitor is its radiation.
LCD is free of radiation.
3.2.2 Keyboard
Keyboard is the most traditional
input device that can be found in
the market.
Other than inputting words,
keyboard can do some special
commands.
E.g. Alt+character to open the
corresponsive program or file.
E.g. Tab+Shift to exchange between
programs.
Operating input/output devices
3.2.3 Mouse
Example of pointing device.
It’s used to input data about the
position on the screen of a
computer system.
Point and click are usually used
to describe their functions when
used in a graphical environment
like operating system of Windows
family.
Operating input/output devices
3.2.4
Printer
Print a hard copy for backup.
Function:

Loading paper
Operating
input/output devices
Print on envelop,label,letter
etc.
3.2.4 PrinterPrint Properties dialog
Paper size
•
Select the paper size (e.g. Letter, Legal).
Paper Type
•
Select the paper type (e.g. Normal, High
Quality, Draft
Operating
Orientationinput/output devices
•
Select either Portrait or Landscape
Paper source
•
Select the paper source (e.g. Auto, Upper,
Envelope, etc.).
Resolution
•
Changes the DPI (e.g. 75, 150, 300).
3.2.5 Scanner
It’s for inputting images or
characters into the computer
system.
Operating
input/output
devices
With suitable software, like
optical character
recognition(OCR), images read
in may be turn into text.
3.2.5 ScannerScan Properties dialog
Image type
•
E.g jpg,bmp
Colour
•
E.g 42-bits,24-bits
Size
•
E.g A3,A4
Resolution
•
Changes the DPI
Changing the settings
You can change the settings
of the input/output devices
in the Control Panel.
3.3
Using an operating system
3.3.1 To create a
new folder
1.Double-click My
Computer, and then
double-click the
drive or folder in
which you want to
place the new folder.
2.On the File menu,
point to New, and
then click Folder.
3.Type the name of
the new folder, and
then press ENTER.
Using an operating system
3.3.2 To rename a
folder or file
1.right-click the folder or
file in which you want to
rename.
2.choose RENAME in the menu
3.Type the new name of the
folder/file, and then press
ENTER.
Using an operating system
3.3.3 To delete a file
or folder
1.Double-click My Computer.
Click the file or folder you
want to delete.
2.On the File menu, click
Delete.
Using an operating system
3.3.4 To move or copy
a file or folder
1.Double-click My Computer. Click
the file or folder you want to
move or copy.
2.Click Edit. To move the file,
click Cut. To make a copy of the
file,click Copy.
3.Open another folder where you
want to place the file, click
Edit, and then click Paste.
Using an operating system
3.3.5 to recover
deleted files
double-click Recycle Bin on
the desktop
right-click the file you want
to retrieve
click Restore.
Using an operating system
3.3.6 To search for a
file or folder
•To specify
additional
criteria,
click Search
Click
Start,search
point
to Search,
Options,
thenclick
click one
or more
of the
andand
then
For
Files
or
following
options to narrow your search:
Folders.
In Search for files or folders
Select
Date to type
look for
filesor
that
wereof
created
named,
all
part
the or
modified
on or
between
specific dates.
file
name
or folder
you want to
find.
Select
to look for files
of a to
specific
type,
InType
Containing
text,
search
for
files
containing
specific
such as
a text
or WordPad
document.
text, type the text you want to
find.
Select
Size to look for files of a specific size.
In Look in, click the drive,
folder,
network
you additional
want to
Select
Advancedor
Options
to specify
searchsearch.
criteria.
Click Search Now.
Using an operating system
3.3.7 display file
information
1.right-click the file that
you want to display the
information
2.choose PROPERTIES
3.click SUMMARY tab to view
the file information
Using an operating system
3.3.8 change file
attributes
1.right-click the file that
you want to change the file
attributes
2.choose PROPERTIES
3.tick the attribute checkbox
to change the file attributes
4. press OK
Using an operating system
3.3.9 to backup files
make copies of the files onto
floppy disks, magnetic tapes
or optical disks
The backup file can help to
recover the original file if
the original file was
destroyed.
Using an operating system
3.3.10 CR EATING A
BATCH FILE

To create a basic batch file first open a MS-DOS command prompt
and follow the below instructions:
1.
At the MS-DOS prompt type edit test.bat and press enter.
If typed properly you should now be in a blue screen within the blue
screen type:
pause
dir c:\windows
dir c:\windows\system
2.
Once the above three lines have been typed in the blue screen
choose file and choose exit, when prompted to save click yes
3.
Once you are back at the MS-DOS prompt type test. When enter is
pressed, this should execute the test.bat file and begin running
the file. Because the first line is pause you will first be
prompted to press a key. Once you press a key the batch file will
run line by line in this case listing the files in the windows and
windows\system directory.
4.
If you wish to add more lines to this batch file you would simply
type "edit test.bat" to edit the file again.
Using an operating system
3.4
Using applications packages
Install a software
Opening, Closing, and
Switching Between Programs
There are two ways you can open a program in
Windows. 1. You can select the program from
your Programs menu. 2. Or, if you know the name
and path of the program you want to start, you
can use the Run command to start it.
To open and close a program from the Programs
menu
 1.To start a program, click the Start button,
and then point to Programs.
 2.Point to the folder containing the program
that you would like to open, and then click the
program name.
 3.To quit the program, click the Close button
in the upper-right corner of the window.
To open and close a program
using the Run command
1.Type the name or click the program that you
want to open. When you use the Run command, you
can often specify just the name of the program
instead of the full path.
2.To see items that you typed previously, click
the arrow in the Open box.
3.To quit a program, click the Close button in
the upper-right corner of the window.
You can run many programs at the same time, and
switch easily between them by using the taskbar.
The taskbar contains a button for each open
folder or program on your computer. You must
already have the programs open in order to view
them on the taskbar.
To switch between
programs
Click the taskbar button
representing the open program
or folder that you want to
switch to.
The program's window then
appears in front of the other
windows on your screen.