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Input and Output Devices (Input Devices (Styluses (Advantages: It can be…
Input and Output Devices
Input Devices
Styluses
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Disadvantages: It requires a specialized monitor, designed to interact with the pen
Definition: It's a small pen-shaped instrument that is used to input commands to a computer screen, mobile device or graphics tablet
Microphones
Advantages: The diaphragm of a condenser microphone assembly is light compared to that of dynamic microphones
Disadvantages: If it's a wireless microphone, the signal may be weak
Definition: It's an input device to input sound that is then stored in a digital form. It's used for various uses such as adding sound to a multimedia presentation or for mixing music
Scanners
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Definition: An input device that is used to read, monitor and examine a documents. For example to scan a word document
Webcams
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Definition: It's used to record a video or take a picture. Sometimes it's built-in our laptops or connected through our PC by USB Cable
Pointing devices
Trackball
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Definition: It's a small ball that is set in a holder and can be rotated by hand to move a cursor on a computer screen
Touchpad:
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Definition: It's an input device in the form of a small panel containing different touch-sensitive areas
Mouse
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Disadvantages: If the battery runs out in a wireless mouse, it cannot be used until it has been replaced
Definition: It has two buttons, a right and left one and also a central wheel which allows you to scroll up and down the page
Keyboard
Advantages: Specialist keyboards are available e.g. ergonomic, gaming keyboards
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Definition: It's a device that's used to type in letters, numbers and characters
Digital Cameras
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Definition: A camera which produces digital images that can be stored in a computer and displayed on screen
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Output Devices
Monitor
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LED Monitor
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Definition: It is a flat screen, flat panel computer monitor or television
CRT Monitor
Advantages: It has a high quality of colour accuracy and brightness and cheaper than flat-screen monitors
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Touch screen
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Disadvantages: If it's in our phone, and our phone isn't water resistant, it won't work
Definition: A display device which allows the user to interact with a computer by touching areas on the screen
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Printer
Dot Matrix printer
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Definition: It's named after the pattern (a grid or ‘matrix’) of dots used when creating the paper printout
Wide format printer
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Definition: A printer that prints on large paper, which can range from two to more than 15 feet in width
Inkjet Printer
Advantages: When it's used with special paper for printing photos, it can produce astonishing results
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3D Printer
Advantages: The widespread use of 3 printing technology will definitely increase the demand for engineers who are needed to design and build these printers
Disadvantages: Decrease in Manufacturing Jobs. It will greatly affect the economy of countries that rely on a large number of low skill jobs
Definition: It's a printer that allows the creation of a physical object from a three-dimensional digital model, typically by laying down many thin layers of a material in succession
Laser Printer
Advantages: It produces a high quality print, very quickly and quietly
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Definition: It's a printer linked to a computer producing good-quality printed material by using a laser to form a pattern of electrostatics charged dots on a light-sensitive drum, which attract toner (or dry ink powder)
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