Question

what is mean by lol???? ​

Answer 1

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LOL, or lol, is an initialism for laughing out loud and a popular element of Internet slang. It was first used almost exclusively on Usenet, but has since become widespread in other forms of computer-mediated communication and even face-to-face communication. 

Answer 2

Answer:

“SD” stands for “standard definition,” and is largely considered the video resolution of yesteryear—primarily being used for older technologies and displays (think tube TVs and VHS). Standard definition videos can be broken into a number of different formats—such as: 480p (352 x 240 pixels)

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