See also Butterfly computer ... Users have experienced problems with the keyboard, including poorly responsive "sticky" keys, repeating characters or characters not appearing on screen.

On a typical keyboard, keys are attached using two pieces of plastic that cross each other and close like a pair of scissors when pressed. The butterfly-keyboard keys instead used a wing-like hinge.

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The third generation of the butterfly keyboard on Apple's Mac laptops was supposed to fix all the problems. But nope. WSJ's Joanna Stern explains why the keyboards on the newest and most expensive ...