A new malware is spreading on Facebook via Google Chrome
Sources report the spread of a new malware via the Chrome and Facebook notifications system. What appears to be notified instead it leads to the infected file downloads It’s not news that hackers and...
View ArticleSSH Protocol
SSH (Secure shell ) is a UNIX based command line and protocol for remotely connecting to the machines in a secure way. Authentication process it is validated via a digital certificate from both sides....
View ArticleThe Origins of Telecommunications
Telecommunications means remote transmission of information. At the dawn of human civilization, to communicate was used smoke signals, the mirrors that reflected the sun’s rays, then the couriers on...
View ArticleThe diode as rectifier
An electronic component from the very peculiar behavior is the diode. We have seen that applying a certain voltage to a resistor, the current through it corresponds to the ratio between the applied...
View ArticleThe zener diode
On the “The diode as rectifier” there has been a talk of the inversely polarized diode behavior; it is seen that, by applying a positive voltage to the cathode than the anode, a current flows only very...
View ArticleLED Diode
The term “LED” is an acronym that stands for “Light Emitting Diode“. The LEDs are constituted by a P-N junction realized with gallium arsenide or gallium phosphide, both of materials able to emit light...
View ArticleHow to build a Power Supply
A power supply is used to operate the electrical power for the equipment that may not be connected directly to the 220V socket, but require a different voltage, typically much lower, similar to that...
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