INPUT DEVICES

Done By: Riya Rajesh12G2

An input device is any peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system such as a computer or other information appliance.

Input and output devices make up the hardware interface between a computer and a scanner

Types of input devices:I. KeyboardII. Pointing devices- A pointing device is any human interface device that

allows a user to input spatial data to a computerIII. Video and imaging input devicesIV. Audio input devices

Mouse

A 'keyboard' is a human interface device which is represented as a layout of buttons.

Each button, or key, can be used to either input a linguistic character to a computer, or to call upon a particular function of the computer.

Traditional keyboards use spring-based buttons, though newer variations employ virtual keys, or even projected keyboards.

Examples of types of keyboards include:

1. Computer keyboard2. Keyer3. Chorded keyboard4. LPFK

Chorded Keyboard

KEYBOARD

Computer Keyboard

Keyer LPFK

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.

1. Digital camera2. Webcam3. Fingerprint scanner4. Barcode reader5. Laser rangefinder

Audio devices are used to either capture or create sound. In some cases, an audio output device can be used as an input device, in order to capture produced sound.

1. Microphone2. MIDI keyboard or other digital

musical instrument

AUDIO, VIDEO AND IMAGING

INPUT DEVICES

Digital Camera Webcam

Fingerprint scanner Barcode reader Laser rangefinder

Microphone

OUTPUT DEVICES

An output device is any piece of computer hardware equipment used to communicate the results of data processing carried out by an information processing system (such as a computer) to the outside world.

Types of output devices:I. SpeakersII. HeadphonesIII. Screen (monitor)IV. Printer

STORAGE DEVICES

A data storage device is a device for recording (storing) information (data). A storage device may hold information, process information, or both. A device

that only holds information is a recording medium. Devices that process information (data storage equipment) may either access a separate portable (removable) recording medium or a permanent component to store and retrieve information.

Any input/output equipment may be considered data storage equipment if it writes to and reads from a data storage medium. Data storage equipment uses either:

I. portable methods (easily replaced),II. semi-portable methods requiring mechanical disassembly tools and/or

opening a chassis, orIII. inseparable methods meaning loss of memory if disconnected from the unit.

Portable methods Hand crafting Flat surface Printmaking Photographic Fabrication Automated assembly Textile Molding Solid freeform fabrication Cylindrical accessing Memory card reader/drive Tape drive Mono reel or reel-to-reel Compact Cassette

player/recorder Disk accessing Disk drive Disk enclosure Cartridge

accessing/connecting (tape/disk/circuitry)

Peripheral networking Flash memory devices

Semi-portable methodsHard disk driveCircuitry with non-volatile RAMInseparable methodsCircuitry with volatile RAMNeurons

COMMUNICATION DEVICE

Communication devices are devices that help exchange any sort of information between two objects or beings.

Types of communication devices are:

I. TV and RadioII. The InternetIII. Mobile phones

THE END