Transcript File (computer1(1))

What is a computer? What is its definition?
A computer is a programmable machine designed to sequentially and
automatically carry out a sequence of arithmetic or logical operations.
It is a general-purpose machine that processes data according to a set of instructions
that are stored internally either temporarily or permanently.
Computer Parts:
Types of Computers:
THE FIVE GENERATIONS OF COMPUTERS
1. First Generation (1940-1956) Vacuum Tubes:
They were often enormous, taking up entire rooms. They were very expensive to operate
and in addition to using a great deal of electricity, generated a lot of heat.
2. Second Generation (1956-1963) Transistors:
Transistors replaced vacuum tubes.
3. Third Generation (1964-1971) Integrated Circuits:
To increase the speed and efficiency, transistors were miniaturized and placed on silicon
chips, called semiconductors.
4. Fourth Generation (1971-Present) Microprocessors: thousands of integrated circuits
were built on one silicon chip to have micro processors.
5. Fifth Generation (Present and Beyond) Artificial Intelligence:
based on artificial intelligence, are still in development, though there are some
applications, such as voice recognition, that are being used today.
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Crash
Your computer or application no longer works correctly and so you "loose" all the work you've
done since the last time you saved.
Creating A File
Storing data as a file with an assigned file name that is unique within the directory it resides
in.
Delete
To remove an item of data from a file or to remove a file from the disk.
Desktop
An on-screen representation of a desktop such as used in the Macintosh and Windows
operating systems.
Disk Space
This is the place where your files live. The greater the disk space the more files you can keep.
More disk space is always better than less.
Documents
Files you create and edit.
Document Files
Files we care about (memos, letters, pictures, etc.)
Double Click
To press the mouse button twice in rapid succession without moving the mouse between
clicks.
Drag
To move an object on screen in which its complete movement is visible from starting location
to destination.
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Edit
To make a change to existing data.
Icons
In a graphical user interface (GUI), a small, pictorial, on screen representation of an object, such as a document,
program, folder or disk drive.
Keyboard
This if the primary text input device. It also contains certain standard function keys, such as the Escape key, tab,
and arrow keys, shift and control keys, and sometimes other manufacturer-customized keys.
Menu
Displays a list of commands, some with images next to them.
Mouse
Pointing device that allows you to tell the computer what to do.
Operating System (OS)
System software that allows your computer to work.
Pointer (AKA Cursor)
The name of the arrow (or other shape) that tracks across the screen as you move the mouse (or other pointing
device) around.
Recycle Bin
Place where you put files and folders that you may later want to delete or get rid of. Compare Trash.
Right click
To press the right button on the mouse.
Shut down
To quit all applications and turn off the computer.
Software
Instructions that tell the computer what to do.
Restart
To turn off the computer and automatically turn the computer on again.
How to create a folder?
1. Right-click on an empty place on the screen.
2. Choose (or select) New .
3. Select Folder.
4. Write a name to the folder.
How to rename a folder?
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Right-click on the created folder.
Choose Rename.
Write an other name to the folder.
How to delete the created folder?
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Right-click on the folder.
Choose Delete.
How to restore the deleted folder?
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Open Recycle Bin on the screen.
Right-click on the deleted folder.
Choose Restore.
A number of questions about computer:
1. How can we start computer ?
2. How can we shut down computer?
3. How can we restart computer?
5. How can we create a folder on the screen?
6. How can we delete the created folder?
7. How can we restore the deleted folder?