Input & Output Any data and instructions entered in the memory of a computer The action of entering data INPUT computers process data (input) into information (output)
data that has been processed into useful form the action of producing information
OUTPUT NFC technology Input
Device Keyboard and mouse Kiosk touchscreen Stylus Game controllers Qr code
Microphone (in headset)
Desktops have standard keyboards with 101-105 keys, including function keys and a numeric keypad. Mobile devices use compact keyboards,
sometimes separate or virtual.
Ergonomic keyboards aim to reduce strain injuries. Non- ergonomic keyboards may include a wrist rest for comfort.
Gaming keyboards,
designed for enthusiasts, feature programmable keys for customization, illuminated keys for visibility in various lighting, and some include displays showing game statistics.
KEYBOARD Keyboards include a typing area,
function keys, toggle keys, and navigation keys. Some have media and Internet control buttons,
special keys, and may feature extras like a fingerprint reader or pointing device.
POINTING DEVICE A pointing device can enable you to select text,
graphics,
and other objects,
such as buttons,
icons, links, and commands.
A mouse, fitting comfortably under the palm, is a pointing device.
As it moves, the onscreen pointer moves. It can be optical or touch, usable on various flat surfaces. A laser mouse employs sensors emitting and sensing light for movement detection, and some mouse use a combination of both technologies. A touch mouse is touch-sensitive, recognizing touch along with traditional click and scroll functions.
A
touchpad is a small, flat, rectangular pointing device sensitive to pressure and motion. Common on laptops and convertible tablets, move the pointer by sliding fingertip across the touc hpada and some have buttons or no buttons. Most touchpads allow tapping to simulate mouse operations like clicking. Some also recognize touch gestures such as swipe, pinch, and stretch motions.
A trackball is a stationary pointing device with a ball on its top or side,
typicallyPing-Pong ball-sized. Some devices, called trackball mice, merge trackball and mouse functionalities To move the pointer with a trackball, rotate
the ball using your thumb, fingers, or palm. Additionally, a trackball usually features buttons that work like mouse buttons.
