2. Computer - is a universal software-
controlled electronic device for automatic
processing, storing and transmitting
information.
3. Keyboard - standard device
alphanumeric information and
instructions
In addition to the alphanumeric keys keyboard typically has 12 function keys along the top
edge. Function keys can be programmed by the user. For example, many programs for
help (tips) enabled key F1, and to exit the program - key F10
Control keys are assigned as follows:
Enter - Enter key;
Esc (Escape - output) key to cancel any action, exit from the menu, etc .;
Ctrl and Alt - these keys have no independent value, but when pressed in conjunction
with other control keys change their action;
Shift (Register) - provides the Shift key (top to bottom and vice versa);
Insert (paste) - toggles between insert (new characters are in the midst of already
recruited, spreading them) and replace (old symbols are replaced by new ones);
Delete (delete) - deletes the character at the cursor position;
Back Space or ← - deletes the character before the cursor;
Home and End - Move the cursor to provide the first and last row position, respectively;
Page Up and Page Down - used to move the text on one page (one screen) back and
forth;
Tab - TAB key moves the cursor to the right to several positions to the next tab stop;
4. Mouse - a handheld device for cursor control and to work with a
graphical interface. ? When you move the mouse on the mat on
the screen moves the mouse pointer, with which you can point
to objects and / or select them. Using the mouse (there may be
two or three), you can specify one or the other type of operation
on the object.
5. Scanner - a device for optical image input to the
computer memory
6. Web camera - a device for storing the
computer video in real time. Used for video
conferencing.
Microphone - devices for inputting audio
information. The microphone is connected to the
sound card that converts sound into digital form
7. Printer - a device for displaying character and graphic
information on paper.
8. Video monitor - a device for displaying character and
graphic information on the screen
10. CPU - the central device of the computer, which processes the
information, performing arithmetic and logic operations, a given
program, the computational process controls and coordinates the
work of all the devices in the computer.
11. Internal memory - a device that stores information necessary at the time
of the computer work
12. External memory - a device designed for long-term storage of large
volumes of information.
Floppy disk drives (drives) - devices that record information on a
floppy disk (floppy) with a diameter of 3.5 inches (89 mm) with
capacity of 1.44 MB
13. Flash-memory - a type of non-volatile memory, allowing you to record
and store information on the chips. Flash-memory ensures high data
integrity, high speed recording and reading information in a small
package. Devices based on flash-memory does not have in its
composition of moving parts, which ensures high data integrity when
used in mobile devices