Mutability and accessibility of primary memory, Computer Engineering

Mutability and Accessibility of primary memory:

Mutability:

Read/write storage or mutable storage

 It provides permit ion for the information to be overwritten at any time. A computer without some amount of read/write storage for primary storage would be useless for various tasks. Modern computers use read/write storage also for secondary storage.

Read only storage

Receive the information which  stored at the time of manufacture, and write once storage (Write Once Read Many) permit the information to be written only once at some point after manufacture. These are known as immutable storage. Immutable storage is utilized for off-line storage and tertiary.  For Examples: CD-ROM and CD-R.

Slow write, fast read storage

Read/write storage which permit information to be overwritten multiple times, but along with the write operation being much slower than the read operation? For instance: flash memory and CD-RW

Accessibility:

Random access

In storage any location may be accessed at any moment in approximately the same amount of time. Such type of characteristic is well suited for primary & secondary storage.

Sequential access

Pieces of information will be accessed of in a serial order, one after the other; so the time to access a specific piece of information depends upon which piece of information was last accessed.

Such characteristic is distinctive of off-line storage.

Posted Date: 10/13/2012 6:08:58 AM | Location : United States







Related Discussions:- Mutability and accessibility of primary memory, Assignment Help, Ask Question on Mutability and accessibility of primary memory, Get Answer, Expert's Help, Mutability and accessibility of primary memory Discussions

Write discussion on Mutability and accessibility of primary memory
Your posts are moderated
Related Questions
How many Flip-Flops are required for mod-16 counter? Ans. 4 flip-flops is required for Mod-16 Counter. For Mod-m Counter, we require N flip-flops where N is selected to be the

Explain about the Arithmetic Shift An arithmetic shift micro operation shifts the signed binary number to left or right. The effect of the arithmetic shift left operation is

Write short note on code optimization. Code optimization: It is the optional phase designed to enhance the intermediate code therefore the Ultimate object program runs quicke

Depth First Search - artificial intelligence: Depth first search is very similar to breadth first, except for that the things are added to the top of this agenda rather than o

What is Page stealing? Ans. Taking page frames other working sets is called Page stealing.

What is  Functional Modelling  We know that Data flow modelling is an ordinary technique used for analysis of a problem in software engineering. It is very useful for analyzi

Micro-Operations A micro-operation is an basic operation which is performed on data stored in registers. We can classify micro-operations into four categories: 1. Register t

Database marketing tool or application helps a user or marketing professional in determining the right tool or plan for his valuable add campaign. This tool haves data from all sou

Differentiate between Batch Operating System and Time Sharing Operating System? Batch operating systems : A batch is a sequence of jobs. Such batch is submitted to batch proce

program in c for scanline seed fill