Difference between static and dynamic RAM?

Answer Posted / rohan

Dynamic RAM is the most common type of memory in use today.
Inside a dynamic RAM chip, each memory cell holds one bit
of information and is made up of two parts: a transistor
and a capacitor. These are, of course, extremely small
transistors and capacitors so that millions of them can fit
on a single memory chip. The capacitor holds the bit of
information -- a 0 or a 1 (see How Bits and Bytes Work for
information on bits). The transistor acts as a switch that
lets the control circuitry on the memory chip read the
capacitor or change its state.

Static RAM uses a completely different technology. In
static RAM, a form of flip-flop holds each bit of memory
(see How Boolean Gates Work for detail on flip-flops). A
flip-flop for a memory cell takes 4 or 6 transistors along
with some wiring, but never has to be refreshed. This makes
static RAM significantly faster than dynamic RAM. However,
because it has more parts, a static memory cell takes a lot
more space on a chip than a dynamic memory cell. Therefore
you get less memory per chip, and that makes static RAM a
lot more expensive.

So static RAM is fast and expensive, and dynamic RAM is
less expensive and slower. Therefore static RAM is used to
create the CPU's speed-sensitive cache, while dynamic RAM
forms the larger system RAM space.

Is This Answer Correct ?    74 Yes 19 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Are there any problems that the cpu faces? Have any measures been taken to make it more efficient?

761


How many bit is my computer?

549


How you can Kill the Session by force?

588


Explain the layers of a windows xp system.

557


Is 64gb ram enough for gaming?

572






How do I find system information?

560


What is monolithic kernel?

685


What are the reasons for process termination?

579


How do you change File Access Permissions?

627


What is synchronously and asynchronously?

534


How do I search in terminal?

657


What is crpc in law?

577


Why would a parent process terminate a child process?

532


What is a command interpreter?

633


Differentiate internal commands from external commands.

591