True/False
Indicate whether the
statement is true or false.
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1.
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Bus contention can damage the output buffers of the devices involved.
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2.
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The capacity of a single-memory chip is usually greater than the memory capacity
of the microprocessor system in which it is used.
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3.
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A memory is volatile if its stored data are not lost even when electrical
power is lost.
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4.
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The simplest memory device is the D flip-flop.
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5.
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Historically, data transfer in DRAM has been synchronous; after various control
inputs have been applied, data are available on the bus as soon as they can get there.
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Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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6.
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The simplest memory device, a ______, can store 1 bit.
a. | capacitor | c. | D-type latch | b. | pass transistor | d. | RAM cell |
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7.
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______ is an erasable programmable read-only memory that does not allow erasure
of selected bits while the chip is in the circuit.
a. | EPROM | c. | SDRAM | b. | E2PROM | d. | EEPROM |
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8.
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A byte is a group of _____ bits.
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9.
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One type of memory, ______, can be read or written only in a specific
sequence.
a. | random access memory (RAM) | c. | read-only memory
(ROM) | b. | random access read/write memory | d. | sequential
memory |
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10.
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Bits are stored in locations specified by ______, a unique number which tells a
digital system how to find data that have been previously stored.
a. | byte | c. | an address | b. | a dynamic RAM | d. | memory |
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11.
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To avoid ______, one or more additional address lines must be decoded by an
address decoder that allows only one chip to be selected at a time.
a. | boot block | c. | static RAM | b. | bus contention | d. | erasing memory |
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12.
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One common use for _____ is to connect two devices that have different data
rates. For instance, a computer can send data to a printer much faster than the printer can use it.
a. | single in-line memory module (SIMM) | b. | dual in-line memory module
(DIMM) | c. | synchronous DRAM | d. | FIFO memory |
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13.
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A ______ cannot retain data for more than a few milliseconds without being
refreshed.
a. | dynamic RAM | c. | mask-programmed ROM | b. | flash memory | d. | static RAM |
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14.
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A circuit with a capacity of 4 bytes (4B) can store how many bits of
memory?
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15.
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A nonvolatile type of memory that can be programmed and erased in sectors,
rather than byte-at-a-time is:
a. | a dual in-line memory module | c. | flash memory | b. | a memory module with
DRAMs | d. | sequential
memory |
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16.
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A SoDIMM is ______ version of a DIMM.
a. | a more complicated | c. | a smaller | b. | a larger | d. | an opposite |
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17.
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A circuit enabling a particular memory device to be selected by the address bus
of a larger memory system is:
a. | an address decoder | c. | an address space | b. | a memory map | d. | a bus
contention |
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18.
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A flash memory is divided into sectors: one sector is designated as ______,
which is either the sector with the highest or lowest address.
a. | the stack pointer | c. | stack or LIFO memory | b. | double data rate | d. | the boot block |
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19.
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______ is storing a program or code in a read-only memory (ROM)
device.
a. | Address multiplexing | c. | Extending the D flip flop | b. | Burning
ROM | d. | Word
organizing |
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20.
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Memory devices are usually part of a larger system, including:
a. | a system of tristate busses | c. | peripheral
devices | b. | a microprocessor | d. | All of the above |
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