Electronics and Communication Engineering - Microprocessors - Discussion

Discussion Forum : Microprocessors - Section 3 (Q.No. 6)
6.

Assertion (A): Dynamic RAM needs refreshing.

Reason (R): Capacitors tend to loose charge.

Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is correct R is wrong
A is wrong R is correct
Answer: Option
Explanation:

Dynamic RAM consists of a capacitor which has to be recharged.

Discussion:
1 comments Page 1 of 1.

Vidya sagar said:   4 years ago
SRAM:

1. Transistors are used to store information in SRAM.
2. Capacitors are not used hence no refreshing is required.
3. SRAM is faster as compared to DRAM.
4. These are expensive.
5. SRAMs are low density devices.
6. These are used in cache memories.

DRAM:

1. Capacitors are used to store data in DRAM.
2. To store information for a longer time, the contents of the capacitor needs to be refreshed periodically.
3. DRAM provides slow access speeds.
4. These are cheaper.
5. DRAMs are high-density devices.
6. These are used in main memories.

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