Question

Which of the following memory cell requires refreshing circuit to retain the data?

• A. Static Random Access Memory
• B. Stochastic Random Access Memory
• C. Dynamic Random Access Memory
• D. Dual Random Access Memory

Answer 1

Answer:

C. Dynamic Random Access Memory

Dynamic random access memory (DRAM) is a type of RAM (random access memory) that stores data and program code in computers. It's a semiconductor-based memory architecture that's used in most computers, servers, and consumer electronics. 

Here are some things to know about DRAM: 

• How it works

  DRAM stores data in a storage cell made up of a capacitor and a transistor. The capacitor maintains data through a charging process, which makes the RAM system "dynamic". 

• Refresh rate

  DRAM needs to be refreshed every few milliseconds to compensate for charge leaks from the capacitor. 

• Speed

  DRAM offers faster speeds than other types of RAM, which allows your computer to process data more quickly. 

• Volatility

  DRAM is volatile memory, meaning it loses the stored data when the power is removed. 

• History

  Robert Dennard and his colleagues at IBM invented DRAM in the 1960s. 

• Memory modules

  Modern DRAM memory modules are designated DDR, or double data rate. When changing, upgrading, or adding memory modules, you must take into account the memory module type and clock speed