Question

Exercice2 Compare SRAM and DRAM Memories by filling the table below. Memories! Criteria Speed Volatility Size Cost Refreshing (Slower/Faster) (volatile/Non- High/Low) (expensive/cheap) (Yes/No) volatile) SRAM Memory DRAM Memory

Answer 1

Answer:

Speed:

SRAM: SRAM is made up of CMOS technology. It is faster than DRAM. The average access time of SRAM is about 10 ns.

DRAM: DRAM is made up of the capacitor. It is slower than SRAM. The average access time for DRAM is about 60ns.

Volatility:

SRAM: SRAM circuit is capable of retaining its state as long as power is on. So SRAM is volatile memory.

DRAM: DRAM is also a volatile memory

Size:

SRAM: SRAM size is high because SRAM offers low packaging density and if we talk size in terms of storage capacity then SRAM size is low.

DRAM: DRAM size is low because DRAM offers high packaging density and if we talk size in terms of storage capacity then DRAM size is high.

Cost:

SRAM: SRAM is expensive in comparison to DRAM, as SRAM is made up of CMOS technology.

DRAM: DRAM is cheap in comparison to DRAM, as DRAM is made up of transistor and Capacitor.

Refreshing:

SRAM: NO refreshing because data is stored in a pair of cross-coupled inverters.

DRAM: Yes refreshing required because data is stored as a charge in a capacitor.