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
Design a BCD to seven segment decoder that accepts a decimal digit in BCS and generates the appropriate output for segments in display indicator. Ans: BCD-TO-seven-Segment

Explain the features and utilities available in java, which makes it suitable for developing e-commerce applications.     1.  In a network, the transmission of passive informati

Q. How to Change Default Drive in dos? To modify a default drive type the new drive letter followed by colon (:) and then press Enter.  For example, if the default drive is A a

, an HTML 4.0 element supported by Netscape6 and MSIE, defines a set of text which is associated with a specific form element. For illustration, code belo

Design a 4:1 mux in Verilog   Multiple styles of coding. e.g. Using if-else statements if(sel_1 == 0 && sel_0 == 0) output = I0; else if(sel_1 == 0 && sel_0 ==

Q. Describe Loading Disk Operating System? Different version of DOS, such as 2.0, 3.0, 3.2, 4.0, 5.0, 6.0, 6.2, 6.22, 7.0, 7.2 are present. The newer versions have additional

Q. Explain about System Deadlock? A deadlock denotes to the condition when simultaneous processes are holding resources and putting off each other from finishing their executio

Illustrate the elements of Information Super Highway Infrastructure. The Information Superhighway is more than the Internet. This is a series of elements, including the collect

Explain briefly how firewalls protect network.       A firewall is simply a program or hardware device that filters the information coming by the Internet connection into your

Why pointer variable sometimes desirable to pass a pointer to a function as an argument? Frequently, a called function needs to make changes to objects declared in the calling