Computer organization mcqs asynchronous dram

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Computer organization mcqs asynchronous dram

Question 1 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The Reason for the disregarding of the SRAM's is .....
A
Low Efficiency
B
High power consumption
C
High Cost
D
All of the mentioned
Question 1 Explanation: 
The reason for the high cost of the SRAM is because of the usage of more number of transistors.
Question 2 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The disadvantage of DRAM over SRAM is/are .....
A
Lower data storage capacities
B
Higher heat dissipation
C
The cells are not static
D
All of the mentioned
Question 2 Explanation: 
This means that the cells won't hold their state indefinitely.
Question 3 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The reason for the cells to lose their state over time is .....
A
The lower voltage levels
B
Usage of capacitors to store the charge
C
Use of Shift registers
D
None of the mentioned
Question 3 Explanation: 
Since capacitors are used the charge dissipates over time.
Question 4 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The capacitors lose the charge over time due to .....
A
The leakage resistance of the capacitor
B
The small current in the transistor after being turned on
C
The defect of the capacitor
D
None of the mentioned
Question 4 Explanation: 
The capacitor loses charge due to the backward current of the transistor and due to the small resistance.
Question 5 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
..... circuit is used to restore the capacitor value.
A
Sense amplify
B
Signal amplifier
C
Delta modulator
D
None of the mentioned
Question 5 Explanation: 
The sense amplifier detects if the value is above or below the threshold and then restores it.
There are 5 questions to complete.

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