Problem
1. Why is RAS*-only refreshing now less popular than CAS*-before-RAS* refreshing? Why does the CAS*-only refresh make it easy to design a refreshing system?
2. Dynamic memory refresh can be carried out by either hardware or software techniques (in the latter a periodic interrupt or a periodically called procedure causes an access to each column address to carry out the access). What are the advantages and disadvantages of each type of refresh technique?
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.