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From whatis.com
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Phase-change Memory (PCM)
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Phase-change
memory (PCM) is a form of computer RAM (random-access memory) that
stores data by altering the state of the matter from which the device is
fabricated. According to its proponents, PCM technology has the potential to
provide inexpensive, high-speed, high-density, high-volume nonvolatile
storage on an unprecedented scale.
Because
it is much closer in speed to dynamic RAM (DRAM), phase change memory technology
is ideal for both non-volatile dual in-line memory modules (NVDIMMs) and
non-volatile memory express (NVMe) solid state drives (SSDs). Apart from its
speed advantage, phase change memory technology is also much more durable
than flash, and any concern about the number of daily writes causing wear-out
is not an issue. PCM is sometimes called "perfect RAM" (PRAM)
because data can be overwritten without having to erase it first.
The
structure of PCM material can change rapidly back and forth between amorphous
and crystalline on a microscopic scale. In the amorphous or disordered phase,
the material has high electrical resistance; in the crystalline or ordered
phase, its resistance is reduced. This allows electrical currents to be
switched on and off, representing digital high and low states. Because the
physical structure is three-dimensional, the number of transistors that can
exist in a chip of fixed size can be maximized, making it possible for PCM to
function many times faster than conventional flash memory, while using less
power.
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===============================================================In addition to this blog, Netiquette IQ has a website with great assets which are being added to on a regular basis. I have authored the premiere book on Netiquette, “Netiquette IQ - A Comprehensive Guide to Improve, Enhance and Add Power to Your Email". My new book, “You’re Hired! Super Charge Your Email Skills in 60 Minutes. . . And Get That Job!” has just been published and will be followed by a trilogy of books on Netiquette for young people. You can view my profile, reviews of the book and content excerpts at:
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Anyone who would like to review the book and have it posted on my blog or website, please contact me paul@netiquetteiq.com.
In addition to this blog, I maintain a radio show on BlogtalkRadio and an online newsletter via paper.li.I have established Netiquette discussion groups with Linkedin and Yahoo. I am also a member of the International Business Etiquette and Protocol Group and Minding Manners among others. I regularly consult for the Gerson Lehrman Group, a worldwide network of subject matter experts and I have been contributing to the blogs Everything Email and emailmonday . My work has appeared in numerous publications and I have presented to groups such as The Breakfast Club of NJ and PSG of Mercer County, NJ.
Additionally, I am the president of Tabula Rosa Systems,
a “best of breed” reseller of products for communications, email,
network management software, security products and professional
services. Also, I am the president of Netiquette IQ. We are currently developing an email IQ rating system, Netiquette IQ, which promotes the fundamentals outlined in my book.
Over the past twenty-five years, I have enjoyed a dynamic and successful career and have attained an extensive background in IT and electronic communications by selling and marketing within the information technology market.
