Exam 4: The Components of the System Unit

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A system bus allows the processor to communicate with peripherals.

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The case of the system unit is made of metal or plastic and protects the internal electronic components from damage.

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A(n) _________________________ is a removable flash memory device about one-half the size of a PC Card that adds memory, communications, and multimedia capabilities to mobile computers.

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A SCSI port is ____.

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Together, four operations (fetching, decoding, executing, and storing) comprise a(n) ____ cycle.

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A(n) ____ digit is the smallest unit of data the computer can process.

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ROM is nonvolatile .

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_________________________ is a type of nonvolatile memory that can be erased electronically and reprogrammed, similar to EEPROM.

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A(n) _________________________, such as a keyboard or printer, is a device that connects to the system unit and is controlled by the processor in the computer.

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Manufacturers state the size of memory chips and storage devices in terms of the number of bytes the chip or device has available for storage.

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Most of today's computers improve processing time with ____, which stores frequently used instructions and data.

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Rambus DRAM (RDRAM) chips are another type of DRAM chips that are much faster than SDRAM chips because they ____.

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Some heat sinks are packaged as part of a processor chip.

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The amount of RAM necessary in a computer is unrelated to the type of software used.

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When the processor needs an instruction or data, it searches memory in this order: L1 cache, then L2 cache, then L3 cache (if it exists), then RAM - with a greater delay in processing for each level it must search.

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A processor contains small high-speed storage locations, called ____, that temporarily hold data and instructions.

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____ time is the amount of time it takes the processor to read data, instructions, and information from memory.

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  Figure 4-4 A(n) _________________________ like that in Figure 4-4 is an interface that can connect up to 127 different peripherals together with a single connector. Figure 4-4 A(n) _________________________ like that in Figure 4-4 is an interface that can connect up to 127 different peripherals together with a single connector.

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____ cache is a type of cache that helps speed the processes of a computer because it stores frequently used instructions and data.

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____ is a cache separate from the processor chip on the motherboard.

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