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Exam 2: Looking at Computers: Understanding the Parts

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Question 21

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A desktop computer's ________ is the case that houses the power source and all storage devices of the computer.

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Question 22

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________ is a measure of the greatest amount of light showing when the monitor displays pure white.

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Question 23

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A unidirectional microphone picks up sounds equally well from all directions.

Microphones and scanners are examples of ________ devices.

The ________ keyboard layout gets its name from the first six letters in the top left row of alphabetic keys on the keyboard and is the standard English-language keyboard layout.

Match each of the following terms to its meaning:

The most common type of monitor is a(n) ________.

A(n)________ device is a component, such as a keyboard, that connects to the computer.

________ is a wireless transmission standard that lets you connect mobile computing devices to peripheral devices over short distances.

The length of time it takes for a processor to request, locate, open and deliver information stored in RAM is measured in ________.

________ is concerned with the design and arrangement of machines and furniture to avoid uncomfortable or unsafe experiences.

Match each of the following terms to its meaning:

Brightness ratio is the difference in light intensity between brightest white and darkest black produced by a monitor.

A(n)________ restarts the system while it is still powered on.

On a keyboard, Num Lock and Caps Lock are both toggle keys.

The arithmetic logic unit (ALU)controls all of the functions performed by the computer's other components and processes all the commands issued to it by software instructions.

The "brains" of the computer is the ________.

Computers use ________ language consisting of 0s and 1s.

Today's CPUs run at speeds measured in kilohertz.

A ________ enables your computer to connect to other computers or to the Internet.