All monitors rely on a video card that is located on the computer motherboard or in a special expansion slot. Following are some of the important output devices used in a computer. Light is passed through liquid crystals to create the pixels. A touch screen has become the primary input method for smartphones and tablet computers. What are the input devices of my computer? One rotation of drum prints one line. For example, the image shows an inkjet printer, an output device that can make a of any information shown on your monitor, which is another example of an output device. These include devices for text, pointing, gaming, images, audio and video.
Tip: Drives such as a , , , and are also considered. A graphic tablet as digitizer is used for fine works of drawing and image manipulation applications. In practice, however, the real number of colors that any monitor can display is controlled by the. In a system on a chip, peripherals are incorporated into the same integrated circuit as the central processing unit. They also work as touch screens in tablet computers, mobile phones, and other handheld technologies. 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.
It presents output visually on computer screen. Output devices allow computers to communicate with users and with other devices. Ink jet printer is a requirement if you are into graphics and desktop publishing business. Flatbed scanner Audio and video can be recorded using a microphone and video camera, respectively. Additionally, all input devices send from the device over a or to the computer.
Since the whole device is not moved, a track ball requires less space than a mouse. Here are the most common computer output devices. Non-Volatile Memory Solid-state drives are one of the latest forms of non-volatile memory. What are the output devices of my computer Every computer has a monitor or display screen, a sound card or sound on the motherboard , and a video card or on-board video on the motherboard , which are all output devices. They act as the main text entry interface for most users. A keyboard contains keys for letters and numbers as well as for specialized tasks, such as Enter, Delete, etc.
This involves the the crystal located at the back of the ink reservoir to vibrate. Non-volatile memory is computer memory that can retain the stored information even when not powered. Why do computers need output devices? Basically, output devices are devices that carry the result out of a system. Traditional keyboards use spring-based buttons, though newer variations employ virtual keys, or even projected keyboards. Just remember that any external device that provides input to the computer or receives output from the computer is considered a peripheral.
A printer allows data from a computer to be displayed in physical form. Wide varieties of printers are available under these groups which incorporate different capabilities, features and price. An output device is defined as: any piece of computer hardware that communicates the results of data processing carried out by an information processing system such as a computer , which converts the electronically generated information into human-readable form. The most common computer output device is the monitor or computer screen. However, there are dozens of other devices that can also be used to input data into the computer. These kinds of devices enable us to provide information to it and receive information from it.
The sharpness of the image depends upon the number of pixels. Microphones Microphones are used to input sound in a computer. Information shown on a display device is called soft copybecause the information exists electronically and is displayed for a temporary period of time. The monitor is the most common output device. Printer - A printer prints whatever is on the monitor onto paper.
Inkjet printers spray tiny dots of ink on a surface to create an image. Some monitors can double as input devices if they have a touchscreen you can use in place of a mouse or keyboard. These are big and heavy and use a lot of desk space and electricity. The formats include visual, audio and digital. Instead of using a mouse, you simply use your finger to click directly on the screen. Keyboards A keyboard is a human interface device which is represented as a layout of buttons.
A joystick is a pivoted stick that you can move around with your hand to simulate movement - sort of like what a helicopter pilot uses. The display devices are also used in home entertainment systems, mobile systems, cameras and video games. It is typewriter like device composed of a matrix of switches. Dot matrix printers use a print head to imbed images on a surface, using an ink ribbon. The most fundamental pieces of information are keystrokes on a keyboard and clicks with a mouse.
They use mirrors that can split white light into blue, red and green light that will go through a lens to magnify the image. Trackballs have traditionally had the same problem as mice: dirty rollers can make their cursor control jumpy and unsmooth. The most common types of printers for personal use in 2014 are inkjet and laser printers. They produce very good quality images and videos but are very high on price. A display screen shows text, graphics and video output. Data Projectors Data projectors connect to your computer's graphics card and allow you to mirror your computer's screen onto an external surface like a wall or screen.