Computable Minds

Blog of popular science about the more exiting branches of computer science.

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4187

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57

Posted on: Jun, 27th 2011
Today I'm going to dedicate the post to explain some basic concepts about the files that the 99% of the people that use a computer don't understand it very well.
Some users know that the last letters that there are at the end of a file (the extension), identifies the type of file, so, for instance, an archive ended in .JPG is a type of file of image and another ended in .GIF is a different image format with other characteristics. This, is true for most cases, but causes confusion in the cases where the extension isn't of a concrete format, unless of a format container. Finish reading "Differences between extension and format in a file"

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330

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52

Posted on: Aug, 24th 2010
CAPTCHA
The web pages increasingly receive more SPAM of programs that automatically fill the forms of the webs. To avoid it, appears the annoying CAPTCHA ("Completely Automated Public Turing test to tell Computers and Humans Apart"). A CAPTCHA consist in a test that has to pass the person that is filling the form, to demonstrate that is a human. But, are there any test that can surpass a human and not a machine? Deep in "Could the CAPTCHA of the future distinguish a human from a machine?"

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611

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48

Posted on: Sep, 3rd 2010
Binary code
There is a big lack of knowledge about how is measured the quantity of information in a computer. It is a fact that storage device sellers and Internet providers have take advantage to cheat us. Also, not a lot of time ago was changed the nomenclature of the international system of information units generating even more confusion. Read the rest of "How they swindle us with the Megabits, Megabytes and Mebibytes"

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583

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44

Posted on: Mar, 15th 2011
Alan Turing
The same as others disciplines as mathematics, the informatics don't have Nobel prize. So a equivalent award, had to be invented in computer science, called Turing prize, in honor to Alan Turing, that did important contributions to the computer science in the beginning of it. Don't miss the rest of "Turing prize (the Nobel of the computer science)"

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4221

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43

Posted on: Nov, 26th 2010
Kinect
The new Xbox 360 peripheral has a multiarray microphone that is capable of separate the voices that there are in front of the device from the others sounds of the enviroment to chat and use voice commands. Here you will learn how is done this difficult task. Don't left of read the rest of "Kinect: How works its multiarray microphone "

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317

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35

Posted on: Sep, 14th 2010
Hz is not equal to Mbps
How many times have you hear, told or wrote the expression X megs of bandwidth. I'm sure that a lot of times, because the continued use of this phrase, have been converted in the regular way of talking of all the people and is totally incorrect. Something seemed happens when say that we weight 154 pounds, being the pound a unit of mass and not of weight. We must say: "I weight 70 kiloponds" or "I weight 154 pounds-force". Follow reading if you want to know why the case of the megs of bandwidth, also is incorrect. Continue discovering "The Megs of bandwidth doesn't exists"
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