Input Devices
Input devices are to enter data into an computer system and include the mouse and keyboard.
Laptop computers have a track pad instead of a mouse.
Scanners are used to transfer hard copy images into the computer.
Graphics tablets are used to transfer freehand drawings into a computer system.
Optical Mark Readers (OMR): are used enter multiple choice exams into a computer system
Optical Character Readers (OCR): are used to read text into a computer so that it can be edited.
Input Devices used in a bank
MICR (Magnetic Ink Character Recognition): Used to read the numbers from the bottom of cheques
Magnetic strips: Used to read account information from a card
Input Devices used in a supermarket
Magnetic strips: Used to read information about the customer e.g. their bank account details
Chip readers: Used to read bank card information
Bar code readers: Used to read information from a label on an item.
Number pads: Used to enter the number of items
Input devices used in a library
Similar input devices to those described for a supermarket by used in a library to input data about books or borrowers e.g.
Bar code reader: Each book has a bar code that is scanned when it is borrowed.
Magnetic strip readers: Used to enter data about the borrower
Some libraries may also use biometric data (fingerprints) to identify the borrowers (instead of a card)
These input methods are used because they mean data entry (details about customers) is quicker and more accurate than using a keyboard
Output Devices
Output devices are used to display the results of processing and include monitors and speakers.
Graph plotter: Used to produce large drawings (blueprints)
Multimedia projectors: Used to display presentations
Laser printers: Used to produce high quality output quickly and are quiet
Inkjet printers: Used in the home to for example print photos
Dot matrix printers: Used to print continuous stationary e.g. payslips and carbon copies. These printers are noisy and are slow. They are often found in “dirty” working environments e.g. garages
Output devices used in a supermarket
Printer: to produce a receipt
Speakers: to play sound
Monitors: to display product information
Input devices are to enter data into an computer system and include the mouse and keyboard.
Laptop computers have a track pad instead of a mouse.
Scanners are used to transfer hard copy images into the computer.
Graphics tablets are used to transfer freehand drawings into a computer system.
Optical Mark Readers (OMR): are used enter multiple choice exams into a computer system
Optical Character Readers (OCR): are used to read text into a computer so that it can be edited.
Input Devices used in a bank
MICR (Magnetic Ink Character Recognition): Used to read the numbers from the bottom of cheques
Magnetic strips: Used to read account information from a card
Input Devices used in a supermarket
Magnetic strips: Used to read information about the customer e.g. their bank account details
Chip readers: Used to read bank card information
Bar code readers: Used to read information from a label on an item.
Number pads: Used to enter the number of items
Input devices used in a library
Similar input devices to those described for a supermarket by used in a library to input data about books or borrowers e.g.
Bar code reader: Each book has a bar code that is scanned when it is borrowed.
Magnetic strip readers: Used to enter data about the borrower
Some libraries may also use biometric data (fingerprints) to identify the borrowers (instead of a card)
These input methods are used because they mean data entry (details about customers) is quicker and more accurate than using a keyboard
Output Devices
Output devices are used to display the results of processing and include monitors and speakers.
Graph plotter: Used to produce large drawings (blueprints)
Multimedia projectors: Used to display presentations
Laser printers: Used to produce high quality output quickly and are quiet
Inkjet printers: Used in the home to for example print photos
Dot matrix printers: Used to print continuous stationary e.g. payslips and carbon copies. These printers are noisy and are slow. They are often found in “dirty” working environments e.g. garages
Output devices used in a supermarket
Printer: to produce a receipt
Speakers: to play sound
Monitors: to display product information