An HDMI cable is necessary in today's world. High Definition Multimedia Interface uses a digital signal to create progressive scanning images. But what does that mean?
An analogue signal is when an electrical current is varied as it is sent up a wire. Information can be sent in this way. Analogue signals, unlike digital, really are high resolution. Digital is only as high resolution as processing power allows, but analogue is nothing more than a stream of electrons being conducted along a surface such as silver. It can be zoomed in to very small degrees. This is only practical to a point, however, because the components necessary would have to be finer and finer.
It only takes a faster processing chip to create very fine digital signals though. If you were to zoom into it, it would be not seem so fine, but it can be fine enough for its needs very easily. A digital signal is a stream of data that can describe anything you put to your mind to programming.
Digital signals are made up of the famous "ones and zeros" that we all hear about so much. But what are they anyway? Well, a "one" tells a circuit on the receiving end to open, and a "zero" tells it to close. These opening and closing circuits cause new ones and zeros to be made, and off they go.
Interlaced scans are the old method of displaying a picture. It's a series of half frames, between twenty-four and thirty, depending on where you live in the world. The frames are divided by many small rows, such as odd and even, with the following frame being the even rows. Never during this method does a complete frame show up on screen, but it all happens so fast, your brain doesn't notice the difference. This is very convenient a method, because you only need to send half the information for every frame.
Progressive scans are whole pictures at once, for each frame. The old CRT monitors, which means cathode ray tube, fired streams of electrons toward the back of the screen. It would be fired in the same pattern as the interlaced rows of lines, many times each second. HD screens can only receive information in one row at a time, for every frame.
An HDMI cable can send all this data, which can be created quickly without the need of finer components.
An analogue signal is when an electrical current is varied as it is sent up a wire. Information can be sent in this way. Analogue signals, unlike digital, really are high resolution. Digital is only as high resolution as processing power allows, but analogue is nothing more than a stream of electrons being conducted along a surface such as silver. It can be zoomed in to very small degrees. This is only practical to a point, however, because the components necessary would have to be finer and finer.
It only takes a faster processing chip to create very fine digital signals though. If you were to zoom into it, it would be not seem so fine, but it can be fine enough for its needs very easily. A digital signal is a stream of data that can describe anything you put to your mind to programming.
Digital signals are made up of the famous "ones and zeros" that we all hear about so much. But what are they anyway? Well, a "one" tells a circuit on the receiving end to open, and a "zero" tells it to close. These opening and closing circuits cause new ones and zeros to be made, and off they go.
Interlaced scans are the old method of displaying a picture. It's a series of half frames, between twenty-four and thirty, depending on where you live in the world. The frames are divided by many small rows, such as odd and even, with the following frame being the even rows. Never during this method does a complete frame show up on screen, but it all happens so fast, your brain doesn't notice the difference. This is very convenient a method, because you only need to send half the information for every frame.
Progressive scans are whole pictures at once, for each frame. The old CRT monitors, which means cathode ray tube, fired streams of electrons toward the back of the screen. It would be fired in the same pattern as the interlaced rows of lines, many times each second. HD screens can only receive information in one row at a time, for every frame.
An HDMI cable can send all this data, which can be created quickly without the need of finer components.
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