If you have been using the Internet for some work or study, and especially if you are working in a large company and browse the web, you have probably familiar with the term firewall. A firewall is a system that observes and regulates network security incoming and outgoing network traffic based on pre-defined security rules. […]



WHAT IS CAPCHA? CAPTCHA is a program that protect and prevent the websites from bots by generating and grading tests that humans can pass but current machines(computer programs) cannot. The term CAPTCHA refers to Completely Automated Public Turing Test To Tell Computers and Humans Apart.It was firstly formulated by Luis Von Ahn, Manuel Blum, Nicholas […]


File system under Windows NT?

A¬†filesystem¬†is the method(function) and data structures that an operating system uses to keep track of files on a disk or partition that is, the way the files are organized on the disk. The word is also refer to a partition or disk that is used to store the files . Thus, someone say “I have […]

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Windows vs. Linux

how windows differs from linux user access Windows :- The Windows operating system, does not provides the users access to the programming code that forms the basis for foundation of this OS. Linux :- Linux OS belongs to the GNU Public License. It provides the access of code to the users of all categories. That […]

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What is IRIS Scanning?

Iris is a self-regulation mechanism of biometrics that uses mathematical pattern-approved techniques on video images of one or both unauthorized eyes, whose gertural patterns are unique, stable and can be viewed from a few distances. Iris recognition uses video camera technology with ultra-fine infrared illumination to obtain images of the full detail of complex structures of the iris […]

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What is Micro Dimming Technique?

basic introduction of micro dimming technique The technique introduced here could enable smooth luminance of the LEDs from “real extinction” or “pseudo-extinction.” More specifically, the LEDs can be dimmed to extinction without any significant gaps in the brightness levels. Various pulse width modulation (PWM) and shunting techniques can be used. Conventionally, PWM often causes LEDs […]

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What is Li-Fi?

BASIC INTRODUCTION OF Li-Fi Light Fidelity (Li-Fi) technology is a wireless communication system light in the violet (800 THz) and red (400 THz). Unlike Wi-Fi which uses the radio part of the electromagnetic spectrum, Li-Fi uses the optical spectrum i.e. Visible electromagnetic spectrum. The principle of Li-Fi is based on sending data by amplitude Modulation […]

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