Mechanical keyboards have individual key switches and metal springs. There are actually a whole bunch more keyboard types out there, but let's stick to basics for now. There are two core keyboard types: mechanical and rubber-dome. Debouncing is a signal processing technique that ensures only one signal is registered. This is called signal bouncing and is an undesired effect in mechanical key switches. This is problematic because the switch needs to rebound higher than the actuation point for the key to reset.ĭebounce: In the short period that two metal contacts complete a circuit, multiple signals can be generated. Hysteresis: When the actuation point and the reset point are misaligned. Travel: The total distance a switch can depress.īottom-out: Pressing the key until it hits the bottom. Reset Point: The distance at which the key needs to rebound for the switch to reset. Actuation Point: The distance at which the switch needs to depress to register as an input.
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