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Wireless earphone. If you are still using wire earphone in 2020 so you might think again the world is changing the advanced technology is coming near and the  3.5mm jack earphone is so old tech nowadays many mobile phones manufacturing companies remove the  3.5mm jack from their phone so I have some list of wireless earphone which is great, cheap, easy to use and durable so let's start. Why you should use wireless earphones? The wireless earphone is easy to use and it looks cool you can use these earphones anywhere Example - yoga, exercise, running, meditation, and many more while the gym wire earphone always irritates you they felt out always and the wire shakes a lot now technology is developed and the battery life of earphone is up to 8hours and greater quality of sound.  Types of wireless earphones. In the market, various types of the earphone are available like neckband, one-sided calling, pure wireless , earbuds, and many others I will prefer

How do PCBs Work? That smartphone your holding has over 110 meters or about 360 feet of wires inside of it. That’s what it takes to combine a camera, speaker, display, wifi, antenna, GPS, battery, fingerprint sensors, dozens of microchips, and many more components, into a single device and have all the components work seamlessly together.  There is one football field's length of wire that fits rather comfortably in that smartphone of yours. But wait, where are all of these wires? Enter the printed circuit board or PCB. You’ve probably seen a circuit board like this one and it might have been green- not blue but, what you may not know is this circuit board is really a multilayered labyrinth of hundreds of copper wires.  This PCB provides structure and organization for all the components to be mounted on the surface, while wires in the middle allow each of the components to communicate and work together.  So, then what’s inside the printed circuit board and how does it work? First,