Monday 17 September 2012

WHAT IS TYPES OF RAMS PERFORMANCE


Top 5 RAM Related Questions

1. What is dynamic RAM?
2. What is the Difference Between RAM and ROM?
3. What is DVD RAM?
4. What is main memory?
5. What is swapping?

 RAM is Random Access Memory. 







ROM is Read Only Memory.
RAM is the memory available for the operating system, programs and processes to use when the computer is running.
ROM is the memory that comes with your computer that is pre-written to hold the instructions for booting-up the computer.
RAM requires a flow of electricity to retain data (e.g. the computer powered on).
ROM will retain data without the flow of electricity (e.g. when computer is powered off).
RAM is a type of volatile memory. Data in RAM is not permanently written. When you power off your computer the data stored in RAM is deleted.
ROM is a type of non- volatile memory. Data in ROM is permanently written and is not erased when you power off your computer.
There are different types of RAM, including DRAM (Dynamic Random Access Memory) and SRAM (Static Random Access Memory).
There are different types of ROM, including PROM (programmable read-only memory) that is manufactured as blank memory (e.g. a CD-ROM) and EPROM (erasable programmable read-only memory).


swap

(1) To replace pages or segments of data in memory. Swapping is a useful technique that enables a computer to execute programs and manipulate data files larger than main memory. The operating system copies as much data as possible into main memory, and leaves the rest on the disk. When the operating system needs data from the disk, it exchanges a portion of data (called a page or segment ) in main memory with a portion of data on the disk.
DOS does not perform swapping, but most other operating systems, including OS/2, Windows, and UNIX, do.
Swapping is often called paging.
(2) In UNIX systems, swapping refers to moving entire processes in and out of main memory.
(3) When spelled SWAP, an acronym for Shared Wireless Access Protocol.





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