INPUT AND OUTPUT
Input
Any data and instructions entered into the memory of a computer
SCANNERS AND READING DEVICE
OPTICAL READER
BAR CODE READER
- Light-sensing input device that reads printed text and graphics
Commonly used input methods include
What is Output ???
Pointing devices
Keyboard
Pen Input
Motion Input
Voice Input
Audio Input
Video Input
⭐ Data that has been processed into a useful form
✏Other Output Devices
an input device that contains keys users press to enter data and instructions into a computer / mobile device
✅PRINTER
✅DISPLAY
Touch Screen
✏Speakers
✏Earbuds & Headphones
✏Data Projector
1. DISPLAY
✏Joysticks, Wheels, Gamepad, Motion-Sensing Game Controller
- Translates the results into a form the computer can process
click to edit
Most desktop computer keyboards have
Keyboard shortcut keys
Navigation keys
Toggle key
Function keys
Typing area
Media control buttons
Internet control buttons
✅ Touch sensitive display
Optical character recognition (OCR).
Optical mark recognition (OMR).
MONITOR
LCD
DISPLAY
Uses laser beams to read bar codes.
✅JOYSTICKS, WHEELS, GAMEPAD, MOTION-SENSING GAME CONTROLLER can be considered output devices when they include force feedback
QR CODE
✅ Touch a stylus or digital pen
on a flat surface to write, draw, or
make selections
Stores information in both a vertical and horizontal direction.
3. QUALITY OF DISPLAY
BRIGHTNESS
DOT PITCH
RESPONSE TIME
CINTRAST RATIO
RESOLUTION
There are a variety of keyboard options for computers and mobile devices
❤A pointer is a small symbol on the screen whose location and shape change as a user moves a pointing device
❤touchpad
✅HEADPHONES are speakers that cover or are placed outside of the ear.
✅EARBUDS or earphone rest inside the ear canal.
✅ Graphics tablet, also called a digitizer,
is an electronic plastic board that detects and
converts movements of a style or digital pen
into signals that are sent to the computer
✏Interactive Whiteboard
2.DISPLAY
✏Digital Signal to produce a picture
✏To display highest quality images
DISPLAY PORT
HDMI PORT
DVI PORT
❤trackball
❤mouse
❤laser mouse
❤touch mouse
❤optical mouse
✅ Called gesture recognition,
users can guide on-screen elements
using air gestures
- PRINTER
✅ A printer produces text and graphics on a physical medium
✅Before purchasing a printer, ask yourself a series of questions
- PRINTER ✅Impact printers form characters and graphics on a piece of paper by striking a mechanism against an inked ribbon that physically contacts the paper
- PRINTER
✅ - A nonimpact printer forms characters and graphics on a piece of paper without actually contacting the paper
✅INTERACTIVE WHITEBOARD is a touch-sensitive device resembling a dry-erase board, that displays the image on a connected computer screen
⭐Thermal Printers
✏ Generates images by pushing electrically heated pins against the heat-sensitive paper
⭐Mobile Printers
✏small, lightweight, battery-powered printer that allows a mobile user to print from a mobile device
⭐All in ine Printers
✏ A single device that prints, scans, copies, and in some cases, faxes
⭐Label Printers
✏small printer that prints on an adhesive-type material that can be placed on a variety of items
⭐Laser Printers
✅ the process of entering input
by speaking into a microphone
⭐Photo Printers
✏Many use ink-jet technology
✏PictBridge allows you to print photos directly from a digital camera
✏Print from a memory card
⭐Large Format Printers
✏To create photo-realistic quality color prints
⭐Ink - Jet Printers
✏characters and graphics by spraying tiny drops of liquid ink onto a piece of paper
❤Color or black-and-white
❤Speed is measured by the number of pages per minute (ppm) it can print
✅ Voice recognition also called
speech recognition
is the computer or mobile device’s
capability
of distinguishing spoken words
✅SPEAKERS are attached to their computers, game consoles, and mobile devices to generate higher-quality sounds
✅DATA PROJECTOR is a device that projects the text and images displaying on a computer or mobile device screen on a larger screen so that an audience can see the image clearly
Black and White
Color
High speed
High Quality
click to edit
click to edit
⭐Plotters
✏to produce high-quality drawings
✅ Process of entering any sound into
the computer such as speech, music,
and sound effects
🖊 Music production software allows
users to record, compose, mix,
and edit music and sounds
✏ the process of capturing full-motion
images and storing them on a computer or
mobile device’s storage medium
❤To assist peoples with physical disabilities access a computer.
Webcam is a type of DV camera that enables a user to:
✏ Capture video and still image
✏ Send email massage and video
attachments
✏ Broadcast live image and video
on internet
✏ Conduct videoconferences
✏ Make video call
✏INPUT
✏OUTPUT
✅HEAD POINTER is a device control with a head pointer
✅BRAILLE KEYBOARD A Braille keyboard is a specialist input device that allows the user to type and enter text or instructions for the computer in Braille.
✅Mouth-Controlled Mouse user bites the "stick" and moves his/her mouth to control the mouse on the screen. To click, the user simply sips or blows on the "stick" which also acts as a sip and puff switch.
⭐ Videoconference is a meeting between two or
more geographically separated people
Scanner and Reading Devices
✒ Scanner is a light-sensing input device
that reads printed text and graphics and then
translates the results into a form the computer can process
✒ Optical reader is a device that uses
a light source to read characters, marks, and codes
and then converts them into digital data that a
computer can process
✅ Optical character recognition (OCR)
✅ Optical mark recognition (OMR)
✅BRAILLE PRINTERS receive data from computer devices and emboss that information in Braille onto paper through the use of solenoids that control embossing pins
✅SCREEN MAGNIFYING SOFTWARE software that interfaces with a computer's graphical output to present enlarged screen content
Bar code reader, also called a
bar code scanner uses laser
beams to read bar codes
✅QR code stores information in both a vertical and horizontal direction
RFID (Radio Frequency Identification)
Uses radio signal to communicate with a tag placed in or attached to an object
Managing inventory
Gauging temperature and pressure of tires on a vehicle
Checking lift tickets of skiers
Checking out library books
Tracking location of people and other items
Providing access to rooms or buildings
Tracking times of runners in a marathon
Managing purchases
Tracking payment as vehicles pass through booths on tollway systems
Magstripe Readers
Bank cards
Identification cards
Entertainment cards
Other similar cards
Credit cards
MICR (Magnetic Ink Character Recognition
Devices read text printed with magnetized ink
Banking industry uses MICR for check processing
An MICR reader converts MICR characters into a form the computer can process
Data Collection
Device obtains data directly at the location where the transaction or event takes place
🖊RFID (radio frequency identification) uses radio signals to communicate with a tag placed in or attached to an object
🖊RFID reader reads information on the tag via radio waves
❗RFID can track
✅Tracking times of runners in a marathon
✅Tracking location of people and other items
✅Checking lift tickets of skiers
✅Managing inventory
✅Gauging temperature and pressure of tires on a vehicle
✅Checking out library books
✅Providing access to rooms or buildings
✅Managing purchases
✅Tracking payment as vehicles pass through booths on tollway systems
✏Magstripe readers read the magnetic
stripe on the back of cards
⭐MICR (magnetic ink character recognition) devices
read text printed with magnetized ink
⭐MICR reader converts MICR characters
into a form the computer can process
✅Data collection device obtains data directly at the location where the transaction or event takes place