1The radio frequency keyboards get the required power from batteries or have a USB cable for charging, while the infrared oness are to be kept in the line of sight of the receiver. On the other hand, the radio frequency keyboards provides a greater range than the infrared ones. The bluetooth keyboards use a bluetooth technology, which provides a greater range than the radio frequency and infrared keyboards. The radio frequency keyboards offer a greater mobility than the bluetooth and the infrared ones.
consists of a ball that rolls one of two wheels inside the mouse. Each wheel contains a circle of holes or notches, which allow a LED light to be shined through and detected by a sensor, as the wheel spins they represent an X or Y axis for the mouse pointer on your screen. This mouse is much more accurate than a mechanical mouse that used only wheels and rollers, however, is not as good as an optical mouse.
Presentation on ip
Presentation on Input Devices
INDEX• Introduction• Mouse• Keyboard• Scanner• Game input devices• Other devices
What is Input Device ?• An input device is any hardware device that sends data to the computer, without any input devices, a computer would only be a display device and not allow users to interact with it, much like a TV.
Keyboard• The keyboard contains a group of keys that correspond to characters and functions.Wired Keyboards Wireless Keyboards Bluetooth Infrared (IR) Radio Frequency
Barcode reader/Scanner• Is a hardware device capable of reading a barcode and printing out the details of the product or logging that product into a database.
Business Card Reader• Allows a user to scan business cards into their computer for digital storage.
Fingerprint scanner• Device that verifies a user or enters password information by scanning their finger
Magnetic- card reader• Is a device that can retrieve stored information from a magnetic card either by holding the card next to the device or swiping the card through a slot in the device.
Book Scanners• A high quality digital camera with light sources on either side of the camera mounted on some sort of frame to provide easy access for a person or machine to flip the pages of the book.
Gamepad• A peripheral device designed to be connected to a computer or console gaming system.
Joystick• Allows an individual to move an object in a game such as navigating a plane in a flight simulator.
Light gun• Detects light using a photodiode in the gun barrel.
Paddle• Commonly used with games that may contain various buttons used to steer and utilize different options in a game.
Kinect• Allowing users to play games with the use of their own body as the game controller.
Optical Mark Reading• OMR is a system that gathers information by using a hardware device that detects a reflection or an absence of reflection from a card or piece of paper.
Magnetic-Ink Character Recognition• MICR is a font capable of recognition using magnetically charged ink.
Mechanical mouse• Contains a metal or rubber ball on its under side. When the ball is rolled in any direction, sensors inside the mouse detect this motion and move the on- screen mouse pointer in the same direction.
Opto-Eechanical Mouse• Accurate than a mechanical mouse that used only wheels and rollers• Not as good as an optical mouse.
Optical mouse• That utilizes light-emitting diodes (LED) or laser as a method of tracking movement, which make them more proficient than earlier mice.• These mice are identified by examining the bottom of the mouse.