As with CRTs, the display size of a flat panel is expressed in inches, and the resolution is the number of pixels horizontally and vertically on the display. Some photo-quality ink jet printers have more colors of ink. They also include sensors that provide information about their environment— temperaturepressureand so forth—to a computer.
Peripherals are commonly divided into three kinds: These printers are slow and noisy, and are not commonly used for personal computers anymore but they can print multi-layer forms, which neither ink jet or laser printers can.
You will see many more flat panels in the future. A video card that allows output to be sent to a monitor is an example of an interface card.
These printers form the image on the page by spraying tiny droplets of ink from the print head. Peripherals are devices that are attached to a computer system to enhance its capabilities.
A sound card is an example of a multimedia output device as is a monitor that can display graphics. Other peripherals, such as the monitor, are essential for the user to be able to use the computer. Dot matrix printers use small electromagnetically activated pins in the print head, and an inked ribbon, to produce images by impact.
An output device reverses the process, translating the digitized signals into a form intelligible to the user. The polarization of one layer, containing long thin molecules called liquid crystals, can be controlled electronically at each pixel, blocking varying amounts of the light to make a pixel lighter or darker.
Peripherals can add to the overall expense of a computer system, so the decision to purchase them is often made by users who must determine whether or not they are a necessary expense. Serial connections, which use relatively few wires, are generally simpler and slower than parallel connections.
The most common type of printer for home systems is the color ink jet printer.
A common example of a parallel bus is the SATA bus. The circuitry to produce sound may be included on the motherboard, but high quality audio output from a PC usually requires a sound card in one of the expansion slots, connected to a set of good quality external speakers or headphones.
Sound Output Computers also produce sound output, ranging from simple beeps alerting the user, to impressive game sound effects, to concert quality music. This card is also called a controller card or an interface card. The printer needs several colors of ink cyan, yellow, magenta, and black to make color images.
Peripherals include input devices, output devices, storage devices, and communications devices. The LCD consists of several thin layers that polarize the light passing through them. Laser Printer Inkjet Printer A laser printer produces good quality images by the same technology that photocopiers use.
Some devices, such as video display terminals and USB hubs, may provide both input and output. The part of the video controller card that protrudes through the case of the computer includes a port or ports that monitor cables can connect to. Input devices include typewriter-like keyboards; handheld devices such as the mousetrackball, joystick, trackpad, and special pen with pressure-sensitive pad; microphones, webcams, and digital cameras.
Some peripherals, such as CD drives, are located inside the computer case or CPU, while other peripherals are external. Most laser printers are monochrome one color only, usually blackbut more expensive laser printers with multiple color toner cartridges can produce color output.
In other cases, an expansion card in one of the expansion slots on the motherboard provides the needed port. The software needed to handle the interface through the controller card is called a device drivera type of system software.
A drum coated with photosensitive material is charged, then an image is written onto it by a laser or LEDs which makes those areas lose the charge.
A bus also known as a port can be either serial or paralleldepending on whether the data path carries one bit at a time serial or many at once parallel.
The monitor allows the user to view data, while the printer produces hard copies of data. Laser printers are faster than ink jet printers.PERIPHERAL DEVICES OF COMPUTER.
1. Magnetic Disk Drives: Hard disk Drive organization: The modern hard disk drive is a system in itself. It contains not only the disks.
that are used as the storage medium and the read write heads that access the raw data. encoded on them, but also the signal conditioning circuitry and the interface.
Many modern electronic devices, such as digital watches, smartphones, and tablet computers, have interfaces that allow them to be used as computer peripheral devices. See also [ edit ] Look up peripheral in Wiktionary, the free dictionary.
A peripheral device connects to a computer system to add functionality. Examples are a mouse, keyboard, monitor, printer and scanner. Learn about the different types of peripheral devices and how.
Aug 08, · Edit Article How to Maintain Computer Peripherals. Within the context of personal computing, the term "peripheral" refers to devices that connect to computers through external ports, such as printers, audio speakers, web cameras, routers, modems, card readers and exterior hard ultimedescente.com: 38K.
Peripherals are devices that are attached to a computer system to enhance its capabilities. Peripherals include input devices, output devices, storage devices, and communications devices. A video card that allows output to be sent to a monitor is an example of an interface card.
The part of the. Computer Devices. Peripheral. Many new devices such as digital watches, smartphones and tablet computers have interfaces which allow them to be used as a peripheral by a full computer, though they are not host-dependent as .Download