![]() Peel back the electrical contact layers and you can see the bottom USB port (or PS/2 port on older machines). Which carries electrical signals from the keyboard to your computer's Notice also the cable running along the inside of the case at the top of the keyboard, Indicator lights for "Num lock", "Caps lock", and "Scroll lock". The green rectangle at the topĬontains three small LEDs that activate the That detect key presses and (through those layers) you can see the roundīars poking the keys down from above. You can see the transparent plastic contact layers ![]() Take off the keyboard's bottom panel and you can see how it all This is what gives the spring to the keys. It in this photo) that stops the key moving down and pushes it back up ![]() Inside the hole, there's a little tiny piece of rubber (you can't see Through the hole to touch the contact layers below. When you press the key, the bar pushes down There's a little hole in the plastic base and the keyboard has a long Pull a key off the keyboard and you can see roughly how it works. If you drop the keyboard while you're messing about with it, expect toįind yourself taking at least a couple of hours to put it allīack together again. In the case of computer keyboards, there'sīut there are a couple of hundred tiny pieces that fall out very To learn how they work but, for a whole bunch of reasons, it's oftenĭangerous, difficult, or ill-advised. Who invented modern computer keyboards?.How to make your laptop keyboard last longer.
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