Lesson 2 Q&A

LCD panels produce an image by manipulating light within a layer of liquid crystal cells.

A.LCD panels

Which one of the following is a type of scanner that converts graphics into an electronic form?

A.image scanner

Most notebook computers contain a pointing device or pointing stick.

A.pointing device or pointing stick

A person's fingerprint, face, handwriting, or voice can be used for biometric identification.

Biometric

Which of the following type of keyboards is designed to provide users with a more natural and comfortable hand, wrist, and arm position?

C.ergonomic

Which of the following is a biometric identification scanning technique?

D.all of the above

Input and output devices can stand alone- they do not need to be connected to the computer.

False

Input devices enable the computer to give you the results of processed data.

False

The mouse is the most commonly used input device for entering data.

False

A keyboard is the most widely used device for entering data into the computer.

Keyboard

A magnetic scanner reads encoded information on the back of credit cards.

Magnetic scanner

A multifunction printer combines various output options such as printing, scanning, copying, and faxing.

Multifunction printer

A trackball mouse is an upside-down mouse.

True

Keyboards can be wireless or cordless.

True

A USB port can connect up to 127 peripheral devices with a single connector.

USB