Following are few of the important input devices which are used in a computer: Keyboard is the most common and very popular input device which helps in. Identify various types of pointing devices. Understand how to input data into a handheld computer. Identify uses of a digital camera. Explain how a mouse works. Input Devices Matter. Images from soundofheaven.info bibuxton/buxtoncollection/soundofheaven.info Etch-A-Sketch. Skedoodle.
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Input Devices. Keyboard. • One of the primary input devices used with a computer . • The keyboard looks very similar to the keyboards of electric typewriters, with. There are many different kinds of input devices. They are split into two categories manual input devices and direct input devices. Manual Input devices: Data is. PDF | Shumin Zhai and others published The Computer Mouse and Related Input Devices.
Views Read Edit View history. An output device can receive data from another device and generate output with that data, but it cannot send data to another device. Aside from recording, audio input devices are also used with speech recognition software. Utilizing a mouse a user has the ability to perform various functions such as opening a program or file and does not require the user to memorize commands. Speakers Projector.
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Citing Literature Number of times cited according to CrossRef: Volume 1 , Issue 1 March Pages Related Information. Pointing devices , which are input devices used to specify a position in space, can further be classified according to:. For pointing devices, direct input is almost necessarily absolute, but indirect input may be either absolute or relative.
For example, digitizing graphics tablets that do not have an embedded screen involve indirect input and sense absolute positions and are often run in an absolute input mode, but they may also be set up to simulate a relative input mode like that of a touchpad , where the stylus or puck can be lifted and repositioned.
Embeded LCD tablets which are also referred to as graphics tablet monitor is the extension of digitizing graphics tablets. It enables users to see the real-time positions via the screen while using.
Some devices allow many continuous degrees of freedom as input. These can be used as pointing devices, but are generally used in ways that don't involve pointing to a location in space, such as the control of a camera angle while in 3D applications. These kinds of devices are typically used in virtual reality systems CAVEs , where input that registers six degrees of freedom is required. Input devices, such as buttons and joysticks , can be combined on a single physical device that could be thought of as a composite device.
Many gaming devices have controllers like this.
Technically mice are composite devices, as they both track movement and provide buttons for clicking, but composite devices are generally considered to have more than two different forms of input. Video input devices are used to digitize images or video from the outside world into the computer. The information can be stored in a multitude of formats depending on the user's requirement.
Audio input devices are used to capture sound. In some cases, an audio output device can be used as an input device, in order to capture produced sound. Audio input devices allow a user to send audio signals to a computer for processing, recording, or carrying out commands.
Devices such as microphones allow users to speak to the computer in order to record a voice message or navigate software. Aside from recording, audio input devices are also used with speech recognition software. Punched card s and punched tape s were much used in the 20th century. A punched hole represented a one; its absence represented a zero. There were mechanical and optical readers. From Wikipedia, the free encyclopedia.
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