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2. 1. Short for escape, esc is a key located on
the top-left of a computer keyboard that
allows a user to cancel or abort operations.

3.  TAB is used for tabulation (indenting the first
line of a new paragraph) when using the
computer as a word processor. It is also used
to advance from one item to the next item
when filling in forms.

4.  The Alt key (pronounced /ˈɔːlt/) on a
computer keyboard is used to change
(alternate) the function of other pressed
keys. Thus, the Alt key is a modifier key,
used in a similar fashion to the Shift key. For
example, simply pressing "A" will type the
letter a, but if you hold down either Alt key
while pressing A, the computer will perform
an Alt+A function, which varies
from program to program.

5.  In computing, a Control key is a modifier
key which, when pressed in conjunction with
another key, performs a special operation
(for example, Ctrl+C); similar to the Shift
key, the Control key rarely performs any
function when pressed by itself.

6.  A long horizontal key on the lower edge of
a keyboard that is always the largest key on
the keyboard. When the spacebar key is
pressed it creates an empty space, also
known as a space character that helps
separate words and other characters in a
sentences. In the below keyboard picture, is
an example of the spacebar.

7.  Alternatively referred to as a return key,
the enter key when referring to a keyboard
is used to return a cursor to the next line or
execute a command or operation. It is
common for most standard keyboards to have
two enter or return keys, one on the
keyboard and another on the numeric
keypad.

8.  Caps Lock is a lock key found on
many computer keyboards, depending on the
local keyboard layout they implement. It is
located in the position of a similar Shift
lock key (and sometimes a Ctrl key) found in
some other keyboard layouts.

9.  The shift key is a modifier key on
a keyboard, used to type capital letters and
other alternate "upper" characters. There are
typically two shift keys, on the left and right
sides of the row below the home row. The
shift key's name originated from
the typewriter, where one had to press and
hold the button to shift up the case stamp to
change to capital letters; the shift key was
first used in the Remington No. 2 Type-Writer
of 1878; the No. 1 model was capital-only.[1]

10.  Sometimes referred to as the rubout key,
the backspace key orback space key is
a keyboard key used to delete
any characterbefore the current position of
the cursor that is adapted from typewriters.
For example, click the mouse button at the
end of the below text and press backspace to
delete the last character in the line. As seen
in the picture the backspace key always has
an arrow that points to the left, on Apple
Macintosh computers, the backspace key is
delete.

11.  Cursor movement keys or arrow keys are
buttons on a computer keyboard that are
either programmed or designated to move
the cursor in a specified direction.[1] The
term "cursor movement key" is distinct from
"arrow key" in that the former term may
refer to any of various keys on a computer
keyboard designated for cursor movement,
whereas "arrow keys" generally refers to one
of four specific keys, typically marked with
arrows.

12.  A typewriter is a mechanical or
electromechanical machine for writing in
characters similar to those produced by
printer's movable type by means of
keyboard-operated types striking a ribbon to
transfer ink or carbon impressions onto the
paper

13.  A keypad that has become a standard featur
e of PC keyboards, consisting of a rectangula
r array of 17extra keys at the right-
hand end: 0-9, ., Num Lock, /, *, -
, + and Enter. Apart from Num Lock, thesetyp
ically duplicate the function of other keys bu
t are designed to make entering basic numeri
calcalculations as quick as on a digital calcul
ator.

14.  Many keyboards include some special
keys (also called hotkeys or multimedia
keys), which are supposed to execute an
application or print special characters (not
included in the standard national
keymaps). udevcontains a large database of
mappings specific to individual keyboards, so
common keyboards usually work out of the
box. If you have very recent or uncommon
piece of hardware, you may need to adjust
the mapping manually.

15.  Windows logo key (also known as Windows
key, start key, logo key, flag key or flag) is
a keyboard key which was originally
introduced on the Microsoft Natural
keyboard before the release of Windows 95.
This key became a standard key on PC
keyboards. Tapping this key invokes the
operating system's start menu, if it has one.
In Windows, Ctrl+Esc performs the same
function, in case the keyboard lacks this key.