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.
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.
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
To remove an item of data from a file or to remove a file from the disk.
An on-screen representation of a desktop such as used in the Macintosh and Windows
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.
Files you create and edit.
Files we care about (memos, letters, pictures, etc.)
To press the mouse button twice in rapid succession without moving the mouse between
To move an object on screen in which its complete movement is visible from starting location
To make a change to existing data.
In a graphical user interface (GUI), a small, pictorial, on screen representation of an object, such as a document,
program, folder or disk drive.
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.
Displays a list of commands, some with images next to them.
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
Place where you put files and folders that you may later want to delete or get rid of. Compare Trash.
To press the right button on the mouse.
To quit all applications and turn off the computer.
Instructions that tell the computer what to do.
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?
Right-click on the created folder.
Write an other name to the folder.
How to delete the created folder?
Right-click on the folder.
How to restore the deleted folder?
Open Recycle Bin on the screen.
Right-click on the deleted folder.
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?