Friday, 5 July 2013

A light-emitting diode (LED)

A light-emitting diode (LED) is a semiconductor light source. LEDs are used as indicator lamps in many devices and are increasingly used for other lighting. Appearing as practical electronic components in 1962, early LEDs emitted low-intensity red light, but modern versions are available across the visible, ultraviolet, and infrared wavelengths, with very high brightness.

When a light-emitting diode is switched on, electrons are able to recombine with holes within the device, releasing energy in the form of photons. This effect is called electroluminescence and the color of the light (corresponding to the energy of the photon) is determined by the energy band gap of the semiconductor. An LED is often small in area (less than 1 mm2), and integrated optical components may be used to shape its radiation pattern. LEDs present many advantages over incandescent light sources including lower energy consumption, longer lifetime, improved physical robustness, smaller size, and faster switching. However, LEDs powerful enough for room lighting are relatively expensive and require more precise current and heat management than compact fluorescent lamp sources of comparable output.


HTTP File Server

HTTP File Server, otherwise known as HFS, is a free web server specifically designed for publishing and sharing files. The complete feature set differs from other web servers; it lacks some common features, like CGI, or even ability to run as a Windows service, but includes, for example, counting file downloads. It is even advised against using it as an ordinary web server.

Sunday, 16 June 2013

Bitdefender

http://www.bitdefender.com/support/how-to-set-up-a-local-update-server-for-cloud-security-for-endpoints-966.html   (How to set up a local update server for Cloud Security for Endpoints)

http://download.bitdefender.com/SMB/Cloud/Cloud_Security_for_Endpoints_by_Bitdefender/Current/EN/Documentation/Bitdefender_CloudSecurityEndpoints_AdminGuide_en.pdf

http://www.bitdefender.com/uninstall/   (UNinstall Tool)
http://www.bitdefender.com/site/Downloads/uninstallIntro/uninstall_consumer_trial.html


http://forum.bitdefender.com/index.php?showtopic=35494  (BD2013)
http://forum.bitdefender.com/index.php?showtopic=27870  (BD2012)
http://forum.bitdefender.com/index.php?showtopic=20566  (BD2011)


http://www.bitdefender.com/support/how-to-uninstall-bitdefender-333.html

http://www.bitdefender.com/support/asking-for-assistance-on-bitdefender-business-products-506.html   (support tool Bidefebder Client)


http://www.bitdefender.com/support/how-to-manually-update-bitdefender-2013-virus-definitions-using-weekly-exe-1030.html  (weekly.exe)

http://www.bitdefender.com/support/asking-for-assistance-389.html   (SYSDUMP)
http://forum.bitdefender.com/index.php?showtopic=29927

http://www.bitdefenderme.com/support/cloud-security-for-endpoints-by-bitdefender-gravityzone--99-2435.html  (cloud articles and Video)



Saturday, 15 June 2013

Reboot, reformat, reinstall

In computing, the initialism RRR stands for "reboot, reformat, reinstall". It is also sometimes referred to, even more simply, as 3R. The system is a widely accepted and humorous methodology employed by technical support technicians.

RRR is most commonly found amongst technical support people whose customers work with Microsoft Windows-based systems. This is arguably because Microsoft systems are so prevalent in modern computing, rather than the implication that it is more commonly needed for Microsoft products (either applications or operating systems) than alternatives such as Mac OS X, Unix or Linux.[citation needed]

RRR is intended to imply that there are three simple steps to making (almost) any problem go away, and suggest that the work of technical support can be done by anyone who has a basic knowledge of the systems. Its use is likely to be a transliteration of the English education initialism of the same name (see the three Rs), widely used in the later part of the 20th Century.

Some server administrators use 3R or RRR for "repartition, reformat, reinstall" in relation to servers that have been infected with a rootkit. Considering how aggressive some rootkits install themselves, repartitioning is often considered the safest extra step to be entirely sure the rootkit is completely removed before reinstall.