Exam 4: Input and Output

Case 4-1 Stacey is the office manager for a small business and is looking for a new printer and scanner for her office. -When buying a scanner,Stacey needs to make sure that the scanner has a high enough ____,typically measured in the number of dots per inch (dpi),for the business needs of the office.

Plasma displays use a layered technology like LCD and ____ and look similar to LCD displays.

With handwriting recognition,the computer interprets handwritten pen input as individual characters.

One factor affecting digital camera quality is the number of pixels,measured in ____,used to store the data for each image.

One of the most common 2D barcodes,the ____ code represents data with a matrix of small squares.

-The accompanying figure shows a portable ____ reader.

Each pixel on an LCD display emits light in the necessary color.

Case 4-2 Lisa is a student who regularly uses the computers at her local Internet café to listen to music,talk to her friends and family through the Internet,and play computer games. -The Internet café provides ____ on some computers so that users can both listen and talk through the device during a telephone call made through the computer without disturbing other users.

The display device for a desktop computer is formally called a ____.

A system used to enable a computer to recognize voice input as spoken words is a(n)speech recognition system.

____ form images by spraying tiny drops of liquid ink onto the

CRT monitors use digital signals to display images,which allows for sharper images.

A graphics tablet is also called a digitizing tablet.

In a printer,the number of ____ affects the quality of printed output.

LCD displays do not use backlighting,which makes them energy efficient and lengthens the battery life of portable devices using these displays.

The idea behind pen-based input and ____________________ in general is to make using a computer as convenient as writing with a pen.

Notebook and netbook computers usually have a keyboard that is similar to a desktop keyboard,but it is typically smaller.

____________________ provide a connection to a monitor,as well as determine graphics capabilities.

____________________ is a technology used with flat panel display devices that attempts to mimic the look of ordinary printed paper.

Case 4-2 Lisa is a student who regularly uses the computers at her local Internet café to listen to music,talk to her friends and family through the Internet,and play computer games. -The Internet café has recently enacted a new policy that says that all users must use the ____ attached to their computers when carrying out activities on the computer that will provide sound,so as to not disturb the other users.