It is essentially a specialized surface that can detect the movement of a user's finger and use that information to direct a pointer and control a computer. Touchpads were first introduced for laptops in the s, and it's now rare to find a laptop without one.
The word "scanner" can be used in a number of different ways in the computer world, but here I am using it to refer to a desktop image scanner. Essentially, a scanner is an input device that uses optical technology to transfer images or sometimes text into a computer, where the signal is converted into a digital image.
The digital image can then be viewed on a monitor screen, saved, edited, emailed, or printed. Digital cameras are used to capture photographs and videos independently.
Later, these photo and video files can be transferred to a computer by connecting the camera directly with a cable, removing the memory card and slotting it into the computer, or through wireless data transfer methods such as Bluetooth.
Once the photos are on the computer, they can be saved, edited, emailed, or printed. Microphones are input devices that allow users to record, save, and transmit audio using a computer. CoWomen via Unsplash. A microphone captures audio and sends it to a computer where it is converted to a digital format.
Once the audio has been digitized, it can be played back, copied, edited, uploaded, or emailed. Microphones can also be used to record audio or to relay sounds live as part of a video chat or audio stream. Joysticks are commonly used to control characters and vehicles in computer video games. Essentially, a joystick is a handle that pivots on a base and sends its angle or direction to the computer as data.
Many video gaming joysticks feature triggers and buttons that can be pressed to use weapons or projectiles in games. Also known as digitizers, graphic tablets are input devices used for converting hand-drawn artwork into digital images. The user draws with a stylus on a special flat surface as if they were drawing on a piece of paper. The drawing appears on the computer screen and can be saved, edited, or printed. While scanners can only create digital images from drawings, graphic tablets offer greater control and versatility for artists by allowing them to see their drawing appear live on their monitor as they create it.
Touch screens provide the same functionality as a mouse or trackpad by allowing users to make selections and commands directly through a device's display screen.
LinkedIn Sales Navigator via Unsplash. They should be connected to a computer. Also, webcams have no inbuilt memory; they use the computer's storage to save captured data. Webcams are most commonly used for video chatting and live-streaming videos.
This device is mainly used in banks to read the cheque number and bank code and to send a signal to the computer to process a valid cheque. This reading process is known as magnetic ink character recognition. This device reads text optically, character by character, and converts the text into digital form to be stored in a computer.
It is mostly used in libraries and offices to copy texts from books and save them digitally. OCR scans the documents like a scanner and then converts them into two colored bitmap versions usually black and white. The light scanned areas are considered as background, while dark areas are considered as characters. Bar Code Reader A bar code reader, also known as a barcode scanner, is an input device used to read bar codes. Barcodes are data written as dark and light lines. Barcodes are usually printed on various items for labeling details.
It is also known as a POS point of sale scanner. The bar code reader scans the bar code image using light, which is then reflected and translated into an analog signal. The signals are then decoded and transformed into alphanumeric values to be stored in a computer connected to a barcode reader. This ultimately helps in identifying product details and prices from the database. QR codes are computer-generated patterns that store or hold a modest amount of data.
They do not require a database to store information separately. QR code readers are almost identical in functionalities to bar code readers. It is mainly used to verify answers from answer sheets, which include answers to multiple-choice questions. Biometric Devices Biometric devices are used to input a person's scanned data based on biological characteristics, such as facial structures, fingerprints, eye corneas, etc.
Most modern smartphones come with the feature of Face Unlock and Fingerprint Unlock, making them a biometric device. However, they can also be standalone devices. Motion Capturing Devices These are the devices used to detect human movements and send them as input to the computer.
Such devices are mostly used in advanced gaming setups, which allow players to play a game by moving their body parts accordingly. This technique is also beneficial in animation and robotics. Note : There are many more input devices used on computers for performing specific purposes. Summary This article covers 20 examples of input devices used for computers, including their names, pictures, and functions of each.
The primary function of an input device is to convert raw data given by users to machine language because computers only understand machine language and not raw input. The input device is known as the electro-mechanical component of a computer system. Computers are essential for this technological era.
Before discussing computer input devices, let's first understand the definition of an input device:. An input device is essentially a piece of instrument or hardware that allows users to provide data, information, or control instructions to a computer used for interaction and control.
The most common input devices of a computer system are listed below:. Because input devices perform essential functions for computers, they are considered as parts of computer systems.
Several types of input devices are available to enter raw data into a computer. The following are examples of commonly used input devices:. The keyboard is one of the primary input devices, which helps in entering data and commands in a computer. A mouse is the most common and very popular pointing device that helps interact with a computer through a process called 'point and click'.
Joysticks are widely used to play games on a computer. The touchpad, also known as a trackpad, is an input device that is primarily integrated with a laptop. A light pen is another pointing device that has the same structure as a pen. The trackball is a pointing device that is used to perform similar tasks as a mouse. A scanner is an essential input device that allows us to convert a hard copy document into a digital file.
A graphic tablet, also known as a digitizer, is primarily used to digitally transform hand-drawn artwork. A stylus is an input device used to draw or write on the surface of digitizers and touch-screens.
Touchscreens are widely used due to the use of portable devices, such as smartphones, notebooks, tablets, laptops, etc. A microphone, also known as a mic, is a type of voice input device that allows users to input voice into a computer system. A digital camera is an input device that is used to capture images and video in digital form. Webcam can capture images and videos and convert them into a digital form.
MICR is a device that typically reads characters or texts that are printed on paper using ink that contains particles of magnetic material. OCR is an input device used to read the handwritten or printed text and convert them to digital text. A bar code reader, also known as a barcode scanner, is an input device used to read bar codes.
The OMR is a type of input device that optically scans the paper and identifies the mark created using a pencil and pen. Most modern automobiles are controlled by a computer. Do you think that the computer in your car has:. A good answer might be: A program that controls the action of the game. On the hard disk Data the images and other information.
On the hard disk When you play the game, its various parts are copied into and out of main memory.
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