Unit Test Input / Output Devices
Carpal Tunnel Syndrome
A condition suffered by people who often use the wrong wrist positions when performing typing for extended periods of time (years)
Image Scanner
A device that converts paper images into an electronic form that can be stored in a computer's memory, the image can then be manipulated or saved
Touchpad
A pointing device with a specialized surface that can convert the motion and position of your fingers to a relative position on the screen - common on laptops
Digital Camera
A special type of input device that stores pictures digitally and then transfers them to the computer's memory - This can also be output, since this device has a small monitor to show the image
Game Controller
A special type of input device used for games - such as joysticks and wheels
Screen Readers
Assists people who are blind or otherwise visually impaired - reads the screens content
Mufti-function Printer
Combines a variety of output options such as printing, copying scanning and faxing
Magnetic Scanner
Device that reads encoded information on the back of credit cards that contains the users encoded account number
Optical Character Recognition
Device using a light source to read characters, marks, and codes; the data is then converted into digital data.
Input Devices
Enable you to enter data and commands into the computer.
Output Devices
Enables the computer to give you the results of the processed data.
Wired Gloves
Input device for virtually reality environments
Liquid Crystal Display LCD
More expensive and modern monitor, these panels produce an image by manipulating light within a layer of liquid crystal cells
Cathode Ray Tube CRT
One of the earliest types of monitors that is similar to a TV that uses a set of tubes to display images on the screen
CD/DVD/Flash Drive
Output devices that can also be used as storage and input devices. The computer sends data to these devices, where it is embedded and can be later retrieved
Projector
Project the computer image onto a screen, most commonly used for presentations
Keyboard
The most commonly used input device for entering numeric and alphabetic data into a computer
Speakers
These generate sound such as music or instructions
Headphones
These generate sound such as music or instructions and allow you to hear it privately
Plasma Monitor
These monitors are more expensive that a CRT monitor and consist of a tiny amount of gas that is activated by an electrical charge that illuminates miniature colored fluorescent lights arranged in a panel-like screen
Right Pinky Finger
This finger is used to press the "enter" key
Either Pinky Finger
This finger is used to press the "shift" key when capitalizing a letter
Right Ring Finger
This finger should "reach" for the letter 0
Left Pinky Finger
This finger should "reach" for the letter Q
Left Pointer Finger
This finger should "reach" for the letter T
Either thumb
This finger should press the space bar
Stylus
This is a pen-like writing instrument that allows you to input information by writing on a PDA or other mobile device
Two Spaces
This is the amount of space placed behind a period at the end of a sentence
Tab
This should provide the spacing needed to begin a paragraph
Biometric
Type of information verification that provides security features such as a fingerprint reader, retinal scan or voice recognition
Ergonomic
Type of keyboard designed to provide users with more natural, comfortable hand, wrist and arm positions
Specialized Keyboard
Type of keyboard that has special keys that represent items such as those used in fast food restaurants
Trackball Mouse
Type of mouse that has a ball located on the top that rolls around and as the mouse is moved sensors inside the mouse determine the direction and distance of the movement
Optical Mouse
Type of mouse that uses a laser to detect the mouse's movement and has no moving parts
Bar code Scanner
Type of scanner that reads bar lines that are printed on products such as in a grocery store
Monitor
Typically used by desktop computers to display the results of the processed data - called a soft copy because it is temporary.
Plotter
Used by engineers, architects and graphic artists for large format printing, drawings and drafting
Printer
Used to produce a paper or hard copy of the processed results. It is called a hard copy because it is permanent
Right Pointer Finger
Which finger should sit on the letter J when you're in the correct "home row" position