Laser – this type utilises toner drums that roll through magnetized pigment, and then transfers the pigment onto a surface.

Ink Jet – this kind of printer sprays tiny dots of ink onto a surface to form an image.

The computer transmits the image data to the printer, which then physically recreates the image, typically on paper. Printer – this device generates a hard copy version of processed data, like documents and photographs. The video card sorts out the computer data into image details that the monitors can then show. Light is passed through the liquid crystals in order to generate pixels.Īll monitors depend on a video card, which is positioned either on the computer motherboard or in a special expansion slot.

Flat Panel Screen – this makes use of liquid crystals or plasma to produce output.

Cathode Ray Tube – this uses phosphorescent dots to generate the pixels that constitute displayed images.

Monitors come in various sizes and resolutions. It creates a visual display by the use of which users can view processed data. Monitor – This is the most common computer output device. For example, if you detach your monitor from your computer, the computer will still function, but it’s not going to be very helpful. There is no indicator of errors, nor of the need for additional input. However, without an output device, there’s no way to determine what the computer is doing. Reasons for Having an Output DeviceĪ computer can still function without an output device.

Monitors and printers are two of the most commonly-known output devices used with a computer.Ĭomputer output devices are all peripheral hardware, and are connected to a computer by cables, or by wireless networking. The devices are usually used for display, projection, or for physical reproduction.

Output devices provide data in myriad different forms, some of which include audio, visual, and hard copy media. Computer output devices receive information from the computer, and carry data that has been processed by the computer to the user.

Project on input and output devices