has contact pins on both sides of the module for larger data paths

is available in 30-pin or 72-pin packages

has contact pins on only one side of the module

has less memory than the newer SIMM modules

has contact pins on both sides of the module for larger data paths

A CD-ROM is a form of read-only memory in which data are stored as ________.

tiny "pinholes" in an opaque substance

A DRAM has a RAS and a CAS because ________.

the RAS determines the operation mode and the CAS enables the tristate outputs

the address lines are multiplexed to reduce pin count

the RAS determines the operation mode and the CAS enables the tristate outputs

the RAS latches in the address and the CAS latches in data

Information that is stored in a mask ROM ________.

is lost if power is interrupted

can be modified by using special equipment

is stored by the manufacturer and cannot be changed

is lost if power is interrupted

can be modified by using special equipment and is lost if power is interrupted

The address space of a RAM memory can be expanded using a decoder and additional memory ICs. The output of the decoder should be connected to which input line of the memory?

The most significant address inputs

The most significant data inputs

Dynamic memory is memory ________.

that maintains storage as long as power is applied

that will maintain storage even if power is removed

whose data can never be altered

that must be refreshed periodically or it will lose storage

that maintains storage as long as power is applied

The basic purpose of tristate or open-collector outputs on a memory is to ________.

isolate devices connected to a common bus

provide faster transitions of the output

Which of the following best describes random-access memory (RAM)?

a type of memory in which access time depends on memory location

a type of memory that can be written to only once but can be read from an infinite number of times

a type of memory in which access time is the same for each memory location

What is the significance of the inverted triangles on the outputs of the device in the given figure?

They represent inverters and mean that the outputs are active-LOW.

They represent buffers and mean that the outputs can drive 40 TTL loads, instead of the normal 10.

It means that the outputs will be active only if a change has occurred at that memory location since the last read/write cycle.

What does the term "random access" mean in terms of memory?

Addresses must be accessed in a specific order.

Any address can be accessed in any order.

Describe the timing diagram of a write operation.

First the address is set, then the data is set on the data bus, and finally the read pulse stores the data.

First the data is set on the data bus and the address is set, then the write pulse stores the data.

First the address is set, then the data is set on the data bus, and finally the read pulse stores the data.

First the write pulse stores the data, then the address is set, and finally the data is set on the data bus.

First the data is set on the data bus, then the write pulse stores the data, and finally the address is set.

204 + Mcqs in Memory And Storage Page 2 McqOptions

51.	One of the advantages of DRAMs is their ability to store data without needing periodic refreshment of the memory contents.
A.	1
B.
Answer» C.

Discussion

52.	A DIMM ________.
A.	is available in 30-pin or 72-pin packages
B.	has contact pins on only one side of the module
C.	has less memory than the newer SIMM modules
D.	has contact pins on both sides of the module for larger data paths
Answer» D. has contact pins on both sides of the module for larger data paths

Discussion

53.	When a computer is executing a program of instructions, the CPU continually fetches information from those locations in memory that contain (1) the program codes representing the operations to be performed and (2) the data to be operated upon.
A.	1
B.
Answer» B.

Discussion

54.	PROMs are basically the same as mask ROMs, once they have been programmed.
A.	1
B.
Answer» B.

Discussion

55.	Due to their ability to be easily erased and reused, magnetic memory devices are widely used for RAM.
A.	1
B.
Answer» C.

Discussion

56.	EEPROM and Flash memory are electrically erasable.
A.	1
B.
Answer» B.

Discussion

57.	The periodic recharging of dynamic RAM memory cells is called ________.
A.	reinstalling
B.	revitalizing
C.	refreshing
D.	reinstating
Answer» D. reinstating

Discussion

58.	Information stored in an EPROM can be erased by prolonged exposure to ultraviolet light.
A.	1
B.
Answer» B.

Discussion

59.	A CD-ROM is a form of read-only memory in which data are stored as ________.
A.	magnetic "bubbles"
B.	magnetized spots
C.	"pits" on an optical disk
D.	tiny "pinholes" in an opaque substance
Answer» D. tiny "pinholes" in an opaque substance

Discussion

60.	Flash memories are frequently used in place of floppy or small-capacity hard disk drives in portable computers.
A.	1
B.
Answer» B.

Discussion

61.	The memory operation that stores data into a memory location after entering a new address is called ________.
A.	a read cycle
B.	a write cycle
C.	a refresh cycle
D.	chip select
Answer» C. a refresh cycle

Discussion

62.	RAM is nonvolatile.
A.	1
B.
Answer» C.

Discussion

63.	RAMs must have a input, in addition to data in.
A.	1
B.
Answer» B.

Discussion

64.	A DRAM has a RAS and a CAS because ________.
A.	the address lines are multiplexed to reduce pin count
B.	the RAS determines the operation mode and the CAS enables the tristate outputs
C.	the RAS latches in the address and the CAS latches in data
D.	None of the above
Answer» B. the RAS determines the operation mode and the CAS enables the tristate outputs

Discussion

65.	Testing and troubleshooting the decoding logic will not reveal problems with the memory chips and their connections to the CPU busses.
A.	1
B.
Answer» B.

Discussion

66.	A device that needs constant refreshing to avoid losing data is a(n) ________.
A.	SRAM
B.	DRAM
C.	ROM
D.	EPROM
Answer» C. ROM

Discussion

67.	Information that is stored in a mask ROM ________.
A.	can be modified by using special equipment
B.	is stored by the manufacturer and cannot be changed
C.	is lost if power is interrupted
D.	can be modified by using special equipment and is lost if power is interrupted
Answer» C. is lost if power is interrupted

Discussion

68.	More than one bit of data can occupy each memory cell.
A.	1
B.
Answer» C.

Discussion

69.	The checksum method is used to test ________.
A.	ROM
B.	EEPROM
C.	FPLA
D.	RAM
Answer» B. EEPROM

Discussion

70.	A write operation may also be referred to as a "fetch" operation.
A.	1
B.
Answer» C.

Discussion

71.	The most widespread application of ROMs is in the storage of data and program codes that must be available on power-down in the microprocessor-based systems. These data and program codes are called firmware because they are firmly stored in hardware.
A.	1
B.
Answer» C.

Discussion

72.	When more than one IC is used to provide all the addressable locations in a memory, a technique called ________ is used to identify which IC is being accessed.
A.	address decoding
B.	memory refresh
C.	data encoding
D.	memory paging
Answer» B. memory refresh

Discussion

73.	PROMs are programmed by ________ fuses.
A.	zapping
B.	blowing
C.	charging
D.	inputting
Answer» B. blowing

Discussion

74.	The highest-speed magnetic storage is achieved by using a floppy disk.
A.	1
B.
Answer» C.

Discussion

75.	Dynamic memories, such as the 2118 16K √ó 1 RAM, have to multiplex the address bus.
A.	1
B.
Answer» B.

Discussion

76.	Floppy disks are organized into concentric rings called ________.
A.	tracks
B.	arrays
C.	sectors
D.	cells
Answer» B. arrays

Discussion

77.	Once a PROM is programmed it can be changed by applying a small electrical charge.
A.	1
B.
Answer» C.

Discussion

78.	Because of their nonvolatility, high speed, low power requirements, and lack of moving parts, ________ have become feasible alternatives to magnetic disk storage.
A.	CD-ROMs
B.	flash memory modules
C.	ROMs
D.	EPROMs
Answer» C. ROMs

Discussion

79.	The address space of a RAM memory can be expanded using a decoder and additional memory ICs. The output of the decoder should be connected to which input line of the memory?
A.	The most significant address inputs
B.	The most significant data inputs
C.	The read/write line
D.	The chip enable
Answer» E.

Discussion

80.	Dynamic memory is memory ________.
A.	that will maintain storage even if power is removed
B.	whose data can never be altered
C.	that must be refreshed periodically or it will lose storage
D.	that maintains storage as long as power is applied
Answer» D. that maintains storage as long as power is applied

Discussion

81.	Fusible-link PROMs are programmed by removing the desired fuse links using a microscope and tweezers.
A.	1
B.
Answer» C.

Discussion

82.	To reduce the number of pins on high-capacity DRAM chips, address ________ is used so that a single pin can accommodate two different address bits.
A.	conversion
B.	programming
C.	multiplexing
D.	firmware
Answer» D. firmware

Discussion

83.	The basic purpose of tristate or open-collector outputs on a memory is to ________.
A.	isolate devices connected to a common bus
B.	simplify the circuitry
C.	provide faster transitions of the output
D.	increase the output current
Answer» B. simplify the circuitry

Discussion

84.	Dynamic RAMs store information by using ________.
A.	magnetism
B.	flip-flops
C.	latches
D.	capacitors
Answer» E.

Discussion

85.	The checkerboard pattern test is used to test ________.
A.	ROM
B.	EEPROM
C.	FPLA
D.	RAM
Answer» E.

Discussion

86.	Which of the following is not a flash memory mode or operation?
A.	Burst
B.	Read
C.	Erase
D.	Programming
Answer» B. Read

Discussion

87.	Typically, how often is DRAM refreshed?
A.	2 to 8 ms
B.	4 to 16 ms
C.	8 to 16 s
D.	1 to 2 s
Answer» C. 8 to 16 s

Discussion

88.	L1 is known as ________.
A.	primary cache
B.	secondary cache
C.	DRAM
D.	SRAM
Answer» B. secondary cache

Discussion

89.	Which of the following is NOT a type of memory?
A.	RAM
B.	ROM
C.	FPROM
D.	EEPROM
Answer» D. EEPROM

Discussion

90.	The main advantage of bipolar (TTL) memories over MOS memories is speed.
A.	1
B.
C.	1
D.
Answer» C. 1

Discussion

91.	Which of the following best describes random-access memory (RAM)?
A.	a type of memory in which access time depends on memory location
B.	a type of memory that can be written to only once but can be read from an infinite number of times
C.	a type of memory in which access time is the same for each memory location
D.	mass memory
Answer» D. mass memory

Discussion

92.	What is the significance of the inverted triangles on the outputs of the device in the given figure?
A.	They represent inverters and mean that the outputs are active-LOW.
B.	They represent buffers and mean that the outputs can drive 40 TTL loads, instead of the normal 10.
C.	It means that the outputs will be active only if a change has occurred at that memory location since the last read/write cycle.
D.	The outputs are tristated.
Answer» E.

Discussion

93.	A CD-R disk is created by applying heat to special chemicals on the disk and these chemicals reflect less light than the areas that are not burned, thus creating the same effect as a pit does on a regular CD.
A.	1
B.
Answer» B.

Discussion

94.	Which of the following is normally used to initialize a computer system's hardware?
A.	Bootstrap memory
B.	Volatile memory
C.	External mass memory
D.	Static memory
Answer» B. Volatile memory

Discussion

95.	What part of a Flash memory architecture manages all chip functions?
A.	I/O pins
B.	floating-gate MOSFET
C.	command code
D.	program verify code
Answer» C. command code

Discussion

96.	The TMS44100 4M √ó 1 DRAM does not have a chip select (SC) input.
A.	1
B.
C.	1
D.
Answer» B.

Discussion

97.	What does the term "random access" mean in terms of memory?
A.	Addresses must be accessed in a specific order.
B.	Any address can be accessed in any order.
Answer» C.

Discussion

98.	Describe the timing diagram of a write operation.
A.	First the data is set on the data bus and the address is set, then the write pulse stores the data.
B.	First the address is set, then the data is set on the data bus, and finally the read pulse stores the data.
C.	First the write pulse stores the data, then the address is set, and finally the data is set on the data bus.
D.	First the data is set on the data bus, then the write pulse stores the data, and finally the address is set.
Answer» B. First the address is set, then the data is set on the data bus, and finally the read pulse stores the data.

Discussion

99.	Which type of ROM can be erased by an electrical signal?
A.	ROM
B.	mask ROM
C.	EPROM
D.	EEPROM
Answer» E.

Discussion

100.	What is the maximum time required before a dynamic RAM must be refreshed?
A.	2 ms
B.	4 ms
C.	8 ms
D.	10 ms
Answer» B. 4 ms

Discussion

Explore topic-wise MCQs in Digital Electronics.

One of the advantages of DRAMs is their ability to store data without needing periodic refreshment of the memory contents.

A DIMM ________.

When a computer is executing a program of instructions, the CPU continually fetches information from those locations in memory that contain (1) the program codes representing the operations to be performed and (2) the data to be operated upon.

PROMs are basically the same as mask ROMs, once they have been programmed.

Due to their ability to be easily erased and reused, magnetic memory devices are widely used for RAM.

EEPROM and Flash memory are electrically erasable.

The periodic recharging of dynamic RAM memory cells is called ________.

Information stored in an EPROM can be erased by prolonged exposure to ultraviolet light.

A CD-ROM is a form of read-only memory in which data are stored as ________.

Flash memories are frequently used in place of floppy or small-capacity hard disk drives in portable computers.

The memory operation that stores data into a memory location after entering a new address is called ________.

RAM is nonvolatile.

RAMs must have a input, in addition to data in.

A DRAM has a RAS and a CAS because ________.

Testing and troubleshooting the decoding logic will not reveal problems with the memory chips and their connections to the CPU busses.

A device that needs constant refreshing to avoid losing data is a(n) ________.

Information that is stored in a mask ROM ________.

More than one bit of data can occupy each memory cell.

The checksum method is used to test ________.

A write operation may also be referred to as a "fetch" operation.

The most widespread application of ROMs is in the storage of data and program codes that must be available on power-down in the microprocessor-based systems. These data and program codes are called firmware because they are firmly stored in hardware.

When more than one IC is used to provide all the addressable locations in a memory, a technique called ________ is used to identify which IC is being accessed.

PROMs are programmed by ________ fuses.

The highest-speed magnetic storage is achieved by using a floppy disk.

Dynamic memories, such as the 2118 16K √ó 1 RAM, have to multiplex the address bus.

Floppy disks are organized into concentric rings called ________.

Once a PROM is programmed it can be changed by applying a small electrical charge.

Because of their nonvolatility, high speed, low power requirements, and lack of moving parts, ________ have become feasible alternatives to magnetic disk storage.

The address space of a RAM memory can be expanded using a decoder and additional memory ICs. The output of the decoder should be connected to which input line of the memory?

Dynamic memory is memory ________.

Fusible-link PROMs are programmed by removing the desired fuse links using a microscope and tweezers.

To reduce the number of pins on high-capacity DRAM chips, address ________ is used so that a single pin can accommodate two different address bits.

The basic purpose of tristate or open-collector outputs on a memory is to ________.

Dynamic RAMs store information by using ________.

The checkerboard pattern test is used to test ________.

Which of the following is not a flash memory mode or operation?

Typically, how often is DRAM refreshed?

L1 is known as ________.

Which of the following is NOT a type of memory?

The main advantage of bipolar (TTL) memories over MOS memories is speed.

Which of the following best describes random-access memory (RAM)?

What is the significance of the inverted triangles on the outputs of the device in the given figure?

A CD-R disk is created by applying heat to special chemicals on the disk and these chemicals reflect less light than the areas that are not burned, thus creating the same effect as a pit does on a regular CD.

Which of the following is normally used to initialize a computer system's hardware?

What part of a Flash memory architecture manages all chip functions?

The TMS44100 4M √ó 1 DRAM does not have a chip select (SC) input.

What does the term "random access" mean in terms of memory?

Describe the timing diagram of a write operation.

Which type of ROM can be erased by an electrical signal?

What is the maximum time required before a dynamic RAM must be refreshed?