Exam 2: The System Unit: Processing and Memory

A USB ____ is a device that plugs into your PC's USB port to convert one port into several USB ports.

The ____ enables up to 127 devices to be connected to a computer through a single port on the computer's system unit.

The number of bits being transmitted at one time is dependent on the bus width.

Some ____ must be added in pairs for optimal performance.

Like graphics data, ____-such as a song or the sound of someone speaking-must be in digital form in order to be stored on a storage medium or processed by a PC.

Most computers today support the ____ standard, in which the computer automatically configures new devices as soon as they are installed and the PC is powered up.

One measurement of the speed of a CPU is the ____, which is rated in megahertz (MHz) or gigahertz (GHz).

MIDI ports are used to receive wireless transmissions from devices.

The ____ takes instructions from the prefetch unit and translates them into a form that the control unit can understand.

To convert analog sound to digital sound, several thousand samples-digital representations of the sound at a particular moment-are taken every second.

Today's CPUs contain hundreds of millions of transistors, and the number doubles approximately every 18 months, a phenomenon known as Moliere's Law. _________________________

A(n) ____________________ slot can be used with peripheral devices adhering to the Secure Digital Input / Output (SDIO) standard.

Most computers today can process more than one piece of microcode at one time-a characteristic known as ____________________, or being able to process multiple instructions per cycle (IPC).

A(n) ____ instruction might look like a meaningless string of 0s and 1s, but it actually represents specific operations and storage locations.

Pipelining increases the number of machine cycles completed per second.

The main circuit board inside the system unit is called the megaboard.

The ____________________ coordinates and controls the operations and activities taking place within the CPU, such as retrieving data and instructions and passing them on to the ALU or FPU for execution.

The power supply inside a desktop computer connects to the ____________________ to deliver electricity to the computer.

The ____________________ chip is estimated to be 100 times faster than silicon.

-The accompanying figure shows the mouse connected to the computer via a(n) ____________________.