How to use a laptop and notebook soundcard only has one socket

Greetings to you all, it was great to be back to update the blog. This time I want to share about a socket on the soundcard of laptops and notebooks.
According to my observation that too many do not know about it, otherwise who knows about, yet I have encountered on this sharing.
Socket soundcard on the laptop and notebook There are two kinds:
First, (in general) socket on the laptop and notebook There are two, one for speakers and one for the microphone, it is a socket in a position parallel to, but separate the two .
Secondly, laptops and notebooks that have only one socket only but has two functions (for microphone and speakers), most people will know is this socket can only be used on the headset/headphones that are at once his microphone.
For the first, I 'm sure many people know about this , so here I just want to explain about the laptop/natebook who only have one soundcard socket only.
This socket has 4 lines: left speaker (L), right speaker (R), microphone (M), and ground/mass (G) . More clearly see the picture :

So if you want to play audio at the same time using a microphone with an amplifier or power amp using the larger, in order to blah-blah-blah is certainly very possible.
The requirement must have a jack that has 4 lines and wires should be the support for the microphone. Socket so that it could be 3 line is: Left speaker , right speaker and microphone.
So only when it is less clear explanation comment below, because if it is explained very long, difficult words compiled sorry!

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