A
keyboard is the set of typewriter-like keys that enables you to enter data into
a computer or other devices. Computer keyboards are similar to electronic typewriters
but certain additional typing key. It is an input device used to enter
characters and functions into the computer system by pressing buttons or keys.
It is the primary device used to enter text. A keyboard is connected to a
computer system using a cable or a wireless connection.
keyboard is the set of typewriter-like keys that enables you to enter data into
a computer or other devices. Computer keyboards are similar to electronic typewriters
but certain additional typing key. It is an input device used to enter
characters and functions into the computer system by pressing buttons or keys.
It is the primary device used to enter text. A keyboard is connected to a
computer system using a cable or a wireless connection.
Standard Key Classification
The
standard selection of keys typically found on computer keyboards can be
classified as follows:
standard selection of keys typically found on computer keyboards can be
classified as follows:
·
Alphanumeric keys: The standard letters and numbers. A combination of
both. Examples are A1, B2, C4, etc.
Alphanumeric keys: The standard letters and numbers. A combination of
both. Examples are A1, B2, C4, etc.
·
Punctuation keys: The comma (,) semicolon (;), period (.) and
similar keys.
Punctuation keys: The comma (,) semicolon (;), period (.) and
similar keys.
·
Special keys: These include the function keys, control keys,
arrow keys, caps lock key, etc.
Special keys: These include the function keys, control keys,
arrow keys, caps lock key, etc.
Design of Keyboards
·
QWERTY keyboard: The standard layout of letters, numbers and
punctuation is known as a QWERTY keyboard because the first six typing keys on
the top row of letters spell QWERTY. The QWERTY keyboard was designed on the
1800s for mechanical typewriters. This layout was actually designed to slow
typists down to avoid jamming the keys on mechanical units.
QWERTY keyboard: The standard layout of letters, numbers and
punctuation is known as a QWERTY keyboard because the first six typing keys on
the top row of letters spell QWERTY. The QWERTY keyboard was designed on the
1800s for mechanical typewriters. This layout was actually designed to slow
typists down to avoid jamming the keys on mechanical units.
·
AZERTY keyboard: The AZERTY is the French version of the standard
QWERTY keyboard. AZERTY keyboards defers slightly from the QWERTY keyboard. For
example, the Q and W keys have been interchanged with A and Z keys.
AZERTY keyboard: The AZERTY is the French version of the standard
QWERTY keyboard. AZERTY keyboards defers slightly from the QWERTY keyboard. For
example, the Q and W keys have been interchanged with A and Z keys.
·
DVORAK keyboard: DVORAK keyboard which has letter positioned for
speed typing. Unlike the traditional QWERTY, the DVORAK is designed so that the
middle row of keys include the most commonly used letters in the alphabet.
DVORAK keyboard: DVORAK keyboard which has letter positioned for
speed typing. Unlike the traditional QWERTY, the DVORAK is designed so that the
middle row of keys include the most commonly used letters in the alphabet.
Types of keyboard
There
is no standard computer keyboard although many manufacturers imitate the
keyboards of PCs (personal computers). There are actually three different PC
keyboards. The original PC keyboard with 84 keys, the AT (advanced technology) keyboard,
also with 84 keys and the enhanced keyboard with 101 keys.
is no standard computer keyboard although many manufacturers imitate the
keyboards of PCs (personal computers). There are actually three different PC
keyboards. The original PC keyboard with 84 keys, the AT (advanced technology) keyboard,
also with 84 keys and the enhanced keyboard with 101 keys.
The
three differ somewhat in the placement of function keys, the control key, the
return key and shift keys. In addition to these keys, keyboards usually contain
the following keys: page up, page down, home, end, insert, pause, num lock,
scroll lock, break, caps lock, print screen.
three differ somewhat in the placement of function keys, the control key, the
return key and shift keys. In addition to these keys, keyboards usually contain
the following keys: page up, page down, home, end, insert, pause, num lock,
scroll lock, break, caps lock, print screen.
