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THE KEYBOARD
SAI RAM ASSOCIATE
THE KEYBOARD
• It is an input device.
• Its design came from typewriters that did not
use electricity.
• A person can type a document, access menus,
play games and perform variety of other tasks.
• Keys, called Keycaps are the same size and
shape from keyboard to keyboard.
• These are also placed at the similar distance
from one another in a similar pattern.
• A standard computer keyboard has about 100 keys.
• Most keyboards use the QWERTY layout, named for
the first six keys in the top row of letters.
STANDARD KEYBOARD LAYOUT
STANDARD KEYBOARD LAYOUT
Most keyboards have keys arranged in five groups
Alphanumeric keys Numeric keypad Function keys
Modifier keys Cursor-movement keys
ACADEMIC RECORDSPassword
ENTER Invalid Password
* * * * *
ERGONOMIC KEYBOARDS
• Long periods of keyboard use can cause injuries.
• An ergonomically correct keyboard can help you avoid injuries.
• This design keep a user’s hands stay positioned correctly, reducing bending and strain.
• These look like traditional keyboard, but been divided down the middle, keeping a person’s hands farther apart and aligning the wrists with the forearms.
VARIANTS OF KEYBOARD
• Illuminated keyboards– It uses light-emitting diodes or electroluminescent film to send
light through the keys or the spaces between keys.
• Optimus keyboard– It has organic light-emitting diodes (OLEDs) in the keys. – Users can change what letter, command or action each key
represents, and the OLED can change to display the new information.
Illuminated keyboards Optimus keyboard
Sai Ram Associates84, Back Side G.T.B NagarMetro Station Gate No-3New DelhiPhone: +011-43098404, 9818346614Email: [email protected]://www.sairamassociate.in
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