New ferroelectric memory chip FM25L16. Free Technical Library News

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New ferroelectric memory chip FM25L16

29.01.2005

RAMTRON announced the release of a new ferroelectric memory chip FM25L16, which operates with a supply voltage of only 3 V and develops speed up to 20 MHz.

The microcircuit has a serial SPI interface and is intended primarily for automotive applications.

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Created a computer model of a bacterium 01.08.2012

Researchers from Stanford University and the Craig Venter Institute said Friday through the journal Cell that they have created a complete computer model of the bacterium and traced, at the molecular level, its entire life cycle between divisions.

The sample was taken from the pathogenic bacterium Mycoplasma genitalium, the same one that the Craig Venter Institute used in 2008 to create an artificial chromosome. The reason for the choice is simple - it is a bacterium with the smallest genome in the world, consisting of only 525 genes. However, even this, the simplest of the simplest, living organism required 128 powerful computers to work together for its computer virtualization.

Although the researchers themselves interpret what they have done as a "first draft", the first draft of M.genitalium, it was undoubtedly a completely "living" single-celled organism containing 28 kinds of interacting molecules - RNA, DNA, proteins and small molecules called metabolites - products of cellular vital activity. It is curious that the life cycle of a bacterium up to its division took 9-10 hours of computer time. About the same time M.genitalium lives in the real world.

The work of the Stanford team has already been recognized as a major breakthrough in a very young scientific direction - computer biology. Computer models of cells have been created in various laboratories for about a decade, but they are all very approximate models that can describe only a small number of functions and include the work of only part of the genes.

Now researchers are facing the next, at first glance, almost impossible task - to create a model of the bacterium Escherichia coli, which is involved in the vast majority of microbiological experiments. Its DNA consists of 4288 genes, it divides every 20-30 minutes and overtakes M.genitalium by orders of magnitude in terms of the number of molecular interactions. Associate professor of bioengineering Markus Covert, who led the study, says a virtual E. coli will be created by his group in two years.

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