ReliaWiki - User contributions [en]

User talk:Dan Charron

2009-12-04T14:45:08Z

Reliaadmin: Welcome!

'''Welcome to ''ReliaWiki''!'''
We hope you will contribute much and well.
You will probably want to read the [[Help:Contents|help pages]].
Again, welcome and have fun! [[User:Reliaadmin|Reliaadmin]] 14:45, 4 December 2009 (UTC)

User:Dan Charron

2009-12-04T14:45:08Z

Reliaadmin: Creating user page with biography of new user.

Other physical devices with read–write capability can have "RAM" in their names: for example, DVD-RAM. "Random access" is also the name of an indexing method: hence, disk storage is often called "random access" (Wiki:PowerOfPlainText, Fortran language features#Direct-access files, MBASIC#Files and input/output, Java Platform, Standard Edition#Random access, indexed file) because the reading head can move relatively quickly from one piece of data to another, and does not have to read all the data in between. However the final "M" is crucial: "RAM" (provided there is no additional term as in "DVD-RAM") always refers to a solid-state device.

Often, RAM is a shorthand in on-line conversations for referring to the computer's main working memory.

[edit] RAM disks
Software can "partition" a portion of a computer's RAM, allowing it to act as a much faster hard drive that is called a RAM disk. Unless the memory used is non-volatile, a RAM disk loses the stored data when the computer is shut down. However, volatile memory can retain its data when the computer is shut down if it has a separate power source, usually a battery.

[edit] Shadow RAM
Sometimes, the contents of a ROM chip are copied to SRAM or DRAM to allow for shorter access times (as ROM may be slower). The ROM chip is then disabled while the initialized memory locations are switched in on the same block of addresses (often write-protected). This process, sometimes called shadowing, is fairly common in both computers and embedded systems.

As a common example, the BIOS in typical personal computers often has an option called “use shadow BIOS” or similar. When enabled, functions relying on data from the BIOS’s ROM will instead use DRAM locations (most can also toggle shadowing of video card ROM or other ROM sections). Depending on the system, this may or may not result in increased performance. On some systems the benefit may be hypothetical because the BIOS is not used after booting in favor of direct hardware access. Of course, somewhat less free memory is available when shadowing is enabled.[2]

User talk:Pantelis

2009-12-04T14:44:36Z

Reliaadmin: Welcome!

User:Pantelis

2009-12-04T14:44:36Z

Reliaadmin: Creating user page with biography of new user.

Pantelis Vassiliou founded ReliaSoft in 1992 while in the Ph.D. program in Reliability Engineering at the University of Arizona. Over the past two decades, he has overseen the research and development of new tools, theories and approaches for advancing reliability methodologies, and has personally taught, lectured and/or acted as a consultant for thousands of reliability engineers and hundreds of companies in over forty countries. Even though fully occupied as the chief executive of a multinational corporation, Mr. Vassiliou still sets aside a part of his schedule to teach selected courses and to participate in selected consulting projects, enabling him to share his experience and insight across different industries, while at the same time allowing him to keep his finger on the pulse of developments in the field to which he has devoted his entire professional life. Mr. Vassiliou holds a B.S. degree in Aeronautical Engineering from Embry-Riddle Aeronautical University and an M.S. degree in Reliability from the University of Arizona.

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2009-12-02T13:49:05Z

Reliaadmin: