Browsing Category " Online Learning "

Difference between LED and LCD

Liquid Crystal Display (LCD): An LCD is a passive device, which means that it does not deliver any light to display characters, animations, videos, etc. LCD uses fluorescent tubes to lighten the picture, but can’t provide a clearer picture as LED delivers. It delivers good color accuracy, but we can notice the difference if we compare LED and LCD color accuracy. In LCD, the wide-angle decreases with 30 degrees from the center in the image then the contrast ratio.


Javascript Char Codes (Key Codes)

Javascript is often used on the browser client side to perform simple tasks that would otherwise require a full postback to the server. Many of those simple tasks involve processing text or characters entered into a form element on a web page, and it is often necessary to know the javascript keycode associated with a character. Here is a reference

HTTP Status Code

Whenever you visit a web page, your computer will request data from a server through HTTP. Even before the requested page is displayed in your browser, the web server will send the HTTP header that has the status code. The status code provides information about the status of the request. A normal web page gets the status code as 200. But we do not see this as the server proceeds to send the contents of the page. As a part of the HTTP 0.9 specifications, the World Wide Web Consortium (W3C) established HTTP status codes in 1992. Tim Berners-Lee, who invented the web and the first web browser in 1990, defined the status codes. A brief overview of HTTP status codes is given below ...


Protect eyes from computer monitor

Most jobs nowadays involve some degree of computer usage, which can result eye problem. In order to avoid this, you'll have to properly protect your eyes following the steps mentioned below.
 

Protect Wi-Fi from unauthorized people

You pay for your internet bill. So, you must protect your Wi-Fi network from unauthorized users. You can allow your neighbor friends to use it, but unknown people should be always prohibited to use your network. How can you secure the router?

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