The Most Incredible Article About Input and Output Devices of a Computer You'll Ever Read.

 

The Most Incredible Article About Input and Output Devices of a Computer You'll Ever Read.

"Input Devices" are the devices that are used to input data and programs into a computer. Input devices can read data and convert it to a computer-readable format. Output Devices can convert the final result of machine processing into a human-readable format. It allows for human-machine communication. The following are some of the I/O devices.

INPUT DEVICES

•  Mouse
•  Keyboard
•  Microphone
•  Scanner
•  Joystick
•  Webcam

OUTPUT DEVICES

•  Monitor
•  Printer
•  Speaker
•  Projectors

Keyboard

A keyboard is a type of computer input device. Computer keyboards, which were originally based on the design of the mechanical typewriter, have evolved alongside technological advances in the same way that other computer hardware has. New ergonomic keyboards can cost as much as a CPU or a high-quality computer monitor. Aside from the mouse, the keyboard is frequently the primary input device on home and office computers. Although keyboards are primarily used for text input, they can also be used for precise image and interface manipulation, sending special commands to the operating system, and even controlling characters and objects in computer games. Other input/output features, such as card readers, USB ports, or integrated trackballs, are available on some keyboards.

Despite the existence of fictitious standards for essential arrangement, keyboard manufacturers are free to create unique displays and designs. While most English-language keyboards use the QWERTY layout, many keyboards with alternative layouts, such as Dvorak, are available. Some specialty keyboards have two or more layouts or languages printed on the keys, whereas others do not. These blank keyboards are only for touch-typists who do not need to look at the keyboard while typing.

Mouse

A mouse, also known as a pointer, is a hand-operated input device that is used to manipulate objects on a computer screen. A movement detected by the mouse, whether it is a laser or a ball, wired or wireless, sends instructions to the computer to move the cursor on the screen in order to interact with files, windows, and other software elements. Despite the fact that the mouse is a peripheral device that sits outside the main computer housing, it is an essential piece of computer hardware in most non-touch systems. Computer mice come in a variety of shapes and sizes, but they are all designed to be used on a flat surface with either the left or right hand. The standard mouse has two buttons in the front (for left and right clicking) and a scroll wheel in the center (to quickly move the screen up and down) Older mice control the cursor with a small ball on the bottom, whereas newer mice use a laser. Instead of moving the mouse across a surface to interact with the computer, some computer mice have a large ball on top of the mouse, allowing the user to keep the mouse stationary while moving the ball with a finger.

Microphone

A microphone is a device that converts sound waves into an electrical signal in order to capture audio. This signal can be amplified as an analog signal or converted to a digital signal for processing by a computer or another digital audio device. While all microphones (or "mics") perform the same basic function, audio can be captured in a variety of ways. As a result, there are various types of microphones. Below are the three most common types: Dynamic Condenser Ribbon

Not only do microphones come in a variety of classes, but they also capture audio in a variety of directional patterns. Some microphones have a single "polar pattern," whereas others have switches that allow you to select the appropriate pattern for a particular recording purpose.

Monitor

The terms "monitor" and "computer screen" or "display" are frequently used interchangeably. The monitor displays the computer's user interface and open programs, allowing the user to interact with the computer, typically using the keyboard and mouse. Older computer monitors were made with cathode ray tubes (CRTs), which made them heavy and took up a lot of desk space. Most modern monitors are built with LCD technology and are known as flat-screen displays. These thin monitors take up significantly less space than older CRT displays. This means that people who use LCD monitors have more desk space to fill with stacks of papers, pens, and other items. CRT (cathode ray tube) displays These monitors use CRT technology, which was most commonly used in the production of television screens. A stream of intense high-energy electrons is used in these monitors to form images on a fluorescent screen. A cathode ray tube is essentially a vacuum tube with an electron gun on one end and a fluorescent screen on the other. Monitors with liquid crystal displays (LCDs) The LCD monitor incorporates one of today's most advanced technologies. A layer of color or monochrome pixels is typically arranged schematically between a couple of transparent electrodes and two polarizing filters. The optical effect is achieved by varying the amount of polarization of the light as it passes through the liquid crystal layer. There are two types of LCD technology available: active matrix TFT technology and passive matrix technology. TFT produces higher-quality images and is more secure and dependable. The passive matrix, on the other hand, has a slow response time and is becoming increasingly obsolete.

Printer

A printer is a device that produces paper documents. Text documents, images, or a combination of the two are examples of this. Inkjet and laser printers are the two most common types of printers. Consumers typically use inkjet printers, whereas businesses typically use laser printers. Dot matrix printers, though increasingly rare, are still used for basic text printing. A hard copy is the physical version of an electronic document and is the printed output produced by a printer. While some printers can only print in black and white, most printers today can print in color. In fact, many home printers can now produce high-quality photo prints that rival those produced by professional photographers. Because modern printers have a high DPI (dots per inch) setting, documents can be printed with a very fine resolution. To print a document, electronic data must be transferred from the computer to the printer. In the File menu of many software programs, such as word processors and image editing programs, there is a "Print" option. When you choose "Print," you'll usually be presented with a Print dialog box. Before sending the document to the printer, use this box to configure the print output settings. After you've made your selections, click the Print button to send the document to the printer. Of course, the printer must be turned on and connected to the computer in order for the document to print. A standard USB cable is used to connect most modern printers. Some printers, however, can be wirelessly connected to one or more computers via a Wi-Fi network. You can also use multiple printers on a single computer if the proper drivers are installed.

Speaker

Speakers are one of the most common output devices used with computer systems. Some speakers are designed specifically for use with computers, whereas others can be connected to any type of sound system. The purpose of speakers, regardless of their design, is to produce audible audio output. Transducers are electronic devices that transform electromagnetic waves into sound waves. The audio input to the speakers is provided by a device such as a computer or an audio receiver. This input can be either analog or digital. Analog speakers simply amplify and convert analog electromagnetic waves to sound waves. A device, such as a computer or an audio receiver, provides audio input to the speakers. This input can be analog or digital in nature. Analog speakers simply amplify analog electromagnetic waves and convert them to sound waves. Speakers are one of the most common output devices used with computer systems. Some speakers are designed specifically for use with computers, whereas others can be connected to any type of sound system. The purpose of speakers, regardless of their design, is to produce audible audio output. Transducers are electronic devices that transform electromagnetic waves into sound waves. The audio input to the speakers is provided by a device such as a computer or an audio receiver. This input can be either analog or digital. Analog speakers simply amplify and convert analog electromagnetic waves to sound waves. Speakers are one of the most common output devices used with computer systems. Some speakers are designed specifically for use with computers, whereas others can be connected to any type of sound system. The purpose of speakers, regardless of their design, is to produce audible audio output. Transducers are electronic devices that transform electromagnetic waves into sound waves. The audio input to the speakers is provided by a device such as a computer or an audio receiver.

Projectors

A projector is a device that displays an image on a large surface, such as a white screen or a wall. When displaying video or images to a large group of people, it can be used instead of a monitor or television. Projectors come in a variety of shapes and sizes, but most are about a foot long, a foot wide, and a few inches tall. They can be ceiling-mounted or freestanding and portable. Ceiling-mounted projectors are typically larger, particularly if they project a long distance (such as 30 feet or more). These projectors are commonly found in classrooms, conference rooms, auditoriums, and religious buildings.