Question 13 A major disadvantage of the MaskProgrammed ROM M

Question 13

A major disadvantage of the Mask-Programmed ROM (MROM) is that it:

cannot be reprogrammed if the stored data needs to be changed.

has an extremely short life expectancy and requires frequent replacement.

is very expensive to change the stored data when system requirements change.

is time consuming to change the stored data when system requirements change.

Question 15

A production plant needs a counter that will count 4,000 items before resetting and recycling. How many flip-flop stages would this counter require?

11

12

10

13

Question 17

A state transition diagram for designing a synchronous nonbinary counter should include:

the undesired states in their expected sequence as well as the desired in any sequence.

the desired states in any sequence and the undesired states in their expected sequence.

the desired states in the expected sequence as well as the undesired states leading to a desired state.

the desired and the undesired states in any sequence.

Question 19

AND gates are being used to decode active-HIGH outputs from a MOD-16 counter. An LED is to come on only when the count equals 13₁₀. Assuming the D output is the MSB, the AND gate used to control the LED must have inputs of:

CB.

DCA.

A.

DA.

Question 23

An erasable Programmable ROM (EPROM) is programmed by the user and may be erased and reprogrammed as often as required.

True

False

1 points

Question 24

Auxiliary memory, like CDs, stores massive amounts of data.

True

False

1 points

Question 25

Capacity, when used to define memory devices, normally refers to the number of:

bytes that may be stored in a designated memory device.

nibbles that may be stored in a designated memory device.

bits that may be stored in a designated memory device.

memory words that may be stored in a designated memory device.

1 points

Question 26

Computer main memory is made up of RAM and ROM ICs that are interfaced to the CPU over three groups of signal line or busses comprising:

data, ALC, and memory buss.

data, control, and address buss.

logic, control, and disable buss.

memory, power, and control buss.

1 points

Question 27

DRAM chips can be combined for larger capacity and word sizes using the same methods as for other memory types.

True

False

1 points

Question 28

Devices that convert physical quantities into electrical quantities are called

digital devices.

encoders.

analog devices.

transducers.

1 points

Question 29

EEPROMs are nonvolatile, offer fast read access, and allow rapid in-circuit erasure and reprogramming of individual bytes. Compared to EPROMs, however:

EEPROMs are not adaptable to most CPUs.

EEPROMs require UV light to reprogram.

EEPROMs suffer from lower density and much higher cost.

EEPROMs require much more power and thus must dissipate much more heat.

		cannot be reprogrammed if the stored data needs to be changed.
		has an extremely short life expectancy and requires frequent replacement.
		is very expensive to change the stored data when system requirements change.
		is time consuming to change the stored data when system requirements change.

Solution

13)
A major disadvantage of the Mask-Programmed ROM (MROM) is that it:

it cannot be reprogrammed if design changed required a modification of the data.
so the first wnaswer that it cannot be reprogrammed if the stored data needs to be changed is correct one.

15)

A production plant needs a counter that will count 4,000 items before resetting and recycling. How many flip-flop stages would this counter require?

we need to count 4000 times
binary of 4000 = 1111 1010 0000
so it hs 12 bits

so 12 bits counter require 12 flip flops stages.

so second option is right

19)

i think there is something missing in this question as 1310 is not possible to count with mod 16 counter
either it is 1010 or 1110
and also led is connected to output of the and gate
so when output of th and gate becomes 1 led will on

and ABCD which are output of the flip flops is connected as a input to the flip flop so
if it is 1010 than input to the AND gate is AB\'CD\' so out put of the AND gate is 1 and led will on
if it is 1110 than input to the AND gate is ABCD\' so out put of the AND gate is 1 and led will on

now consider that LED will on when output of the and gate is 0:
if it is 1010 than input to the AND gate is A\'BC\'D so out put of the AND gate is 0 and led will on
if it is 1110 than input to the AND gate is A\'B\'C\'D so out put of the AND gate is 0 and led will on

23)

An erasable Programmable ROM (EPROM) is programmed by the user and may be erased and reprogrammed as often as required.

as the name suggest we can erased and reprogarmmed as ofetn as required so the statement is true.

24)

Auxiliary memory, like CDs, stores massive amounts of data.
given statement is True

25)

Capacity, when used to define memory devices, normally refers to the number of:
   
capcity is given by number of bits can be stored in a particular memory device / complete memory system

so the third statement that is bits that may be stored in a designated memory device is correct

26)

Computer main memory is made up of RAM and ROM ICs that are interfaced to the CPU over three groups of signal line or busses comprising:

generally ROM ICs that are interfaced to the CPU over three groups of signal line or busses comprising data lines , address lines , control line.
so the second statement that is data , control and address bus is correct

27)

DRAM chips can be combined for larger capacity and word sizes using the same methods as for other memory types.
the statement is true as DRAM are designed for a high density chips.
as DRAM cell consists of only one transisor to store 1 bit of data it requires a very small area.
so it is used for high density chips

28)

Devices that convert physical quantities into electrical quantities are called
A transducer is a device that measures a physical quantity and converts it into a electrical quntity
so 4th statement is correct

29)

EEPROMs are nonvolatile, offer fast read access, and allow rapid in-circuit erasure and reprogramming of individual bytes. Compared to EPROMs, however:

one major disadvantage of EEPROm is they suffer from lower density and much higher cost than EPROMs.
so the 3rd statement is correct.