Input and Output devices
Output Devices
An output device is sending the information from the computer.
Bar Code Reader
Bar code Reader is used to scan identification codes directly from products, books and member ship cards
CRT
CRT (Cathode-Ray Tube) is an old fashion monitor. It shows the on the screen by using the cathode ray tube which is series of red, blue and green dots or lines. These dots or lines are the ones that are translated by your brain as recognizable images
Chip reader
Chip Readers is used for reading data from chips on bank cards
Concept Keyboard
Concept Keyboard is a picture on a keyboard instead of letters, people use this in restaurant
Dot matrix Printer
Dot Matrix Printers uses a printer head and ribbon to generate characters on continuous stationery. They are often used in industry to print payslip, labels and invoices.
Drum Plotter
Drum Plotter is a large format printer with a pen that moved in a single axis track and the paper itself moves on a cylindrical drum to add the other axis or dimension.It is smaller than a flat bed plotter.
Flat bed plotter
Flat Bed Plotter is a large format printer that mechanically controls pen to draw an outline. They used turtle graphics program. They can move in any direction.
Graphical Tablet
Graphical Tablet is used to input freehand drawings into the computer
Inkjet Printer
Inkjet printers are printers that are used for printing text, graphics and photos very quickly, also with high quality. It can be used to print digital photography and small documents.
Input Devices
Input device is devices putting data and information into the computer
Keyboard
Is use to enter text into the computer
Joysticks
Joysticks is used to control objects on a screen in computer games, flight simulators, etc
Light Sensors
Light Sensors is use to adjust the light levels in the right position
Light Pen
Light pen is a sensitive pen that connects to the computer and likely to be the same as touch screen
MICR
Magnetic Ink Character Reader (MICR) is used for putting data from bank cheque
Magnetic Stripe Reader
Magnetic stripe readers is used to read data from magnetic stripes on identity and banking cards
Mouse
Mouse controls the position of the pointer on the screen in any computer system
Multimedia Projector
Multimedia projector is use to connect to a computer and television to present information to a large audience with larger scale.
Numeric Keypad
Numeric Keypad is used only for putting numerical information that needs to be enter.
OCR
Optical Character Reader (OCR) transfer handwritten or printed text into editable text on a computer
OMR
Optical Mark Reader (OMR) used to read and input information from a form, class register or test paper
Pin Pad
Pin Pad is use to enter data into an ATM machines, EFTPOS system, entry doors and handheld devices
Pressure Sensors
Pressure Sensors is used for input pressure readings to a microprocessor or computer
QRC
QRC (quick response code) is a matrix or two dimensional code, It can be read by QR scanners, mobile phones, smart phones, camera or all gadgets that has a camera on
Remote Control
Remote Control is a handheld device which is use to control TVs, PCs, home entertainment system, projectors, etc
Scanner
Scanner is an input device that allow hard copies of images (such as drawings or photographs) or text to be transferred to a computer
Speakers
Speakers is an output audio information to a user as speech, music or sound effects. It is use in many devices such as phones, televisions, music, centres, computers and in headphones
The important things that you should consider before buying an input device.
Speed of input: how quickly can information be input or the device used? Relevance to application: Is the right device being used for the right task? Cost: Specialist equipment can be expensive? Accuracy of input: Can fine detail or precise movements be recorded?
TFT
TFT (Thin Film Transistor) is a new monitor that replace CRT monitors
Temperature Sensors
Temperature Sensors is used to input temperature readings to a microprocessor or computer
Touch Pad
Touch pad is an alternative mouse that was built inside laptops
Tracker ball
Tracker ball is an alternative for a mouse, useful for people who have limited movement in their hands
Webcam
Webcam is a camera that allows you to take picture, recording video and video conferencing