Wednesday, 10 October 2012

Practical -Utilities

Formatting a Diskette 
When you format a disk, you divide the disk into areas tracks and sectors. 

How to format a disk?
- Insert the disk into the floppy drive
- Double click on My computer
- Right click on the drive you want to format
- Select format from the menu
- Choose full option. You may choose quick disk that has already been used, but it does not check the disk for errors and so is not generally recommend.
-Enter a label for your disk if you wish.
-If the disk will be used to boot you pc, check the box marked ' Copy system files' to format the disk as bootable.
- Click Start button.
- View the results to make sure the disk was properly formatted.

What do Scan disk do?
 Scan disk checks your disk for any errors of faults.

What is Defragmentation?
The Disk Defragmenter rearranges the files and free space on your disk so that files are opened more quickly because they are stored in adjacent (next to each other) units and free space is consolidated.

How to start a Defrag?  
- Click Start
-Point to Programs
- Point to Accessories
- Point to System Tools
- Click Disk Defragmenter

Win zip / Compressed Folders 
Folders that are compressed using the Compressed (zipped) Folders feature use less space and can be transferred to other computers more quickly. 

Virus and Antivirus 

What is a computer virus?
It is a program that disrupts the normal operation of a computer. It is created intentionally to cause harm.
What is an antivirus?
An antivirus software serves to protect your computer from viruses. However it always needs updates to protect your computer from the latests viruses.
 














The First Chapter

The Computer System 


Did you know that DATA+STRUCTURE=INFORMATION !


What is a computer ?

A computer is a device that accepts input, processes data, stores data and produces output .

What is an Input?
An Input is the process entering into the computer. The most common input is the keyboard.

What is Soft copy and Hard copy?
Soft copy-  It is the data displayed on a monitor screen.
Hard copy- The data printed on a paper.

What are supercomputers , Mainframe , Microcomputers , Desktop Computer , Portable Computers?

Supercomputers - Supercomputers are very powerful and have a lot of memory .... Infect NASA is  using Supercomputers.
Mainframe - They are less powerful than supercomputer but :
They are very fast
They have large-capacity
And also occupying specially wired and conditioned rooms.
Desktop Computers - They are the type of computers they usually we use at home... These machines run comparatively easy-to-use application software.
Portable Computers - Most known as laptops or net book, small enough and light enough to move easily from one place to another.

What is the difference between system software and application software?  
The system software is the operating system we are running on ex. Windows XP.
Application Software is the kind of software we use to preform a general-purpose task.