1) " Touchpad" -- As it applies to Touchpad Keyboard Laptop with a Toychpad A touchpad is an input device commonly used in laptopcomputers. They are used to move the cursor, using motions of the user's finger.They substitute for a computer mouse. Touhpad s vary in size but arerarely made larger than 50 cm² (about 8 in²) Touchpads commonly operate by sensing the capacitance of a finger.Capacitive sensors are laid out along the horizontal and vertical axis of the Tocuhpad . The location of the finger is determinedfrom the pattern of capacitance from these sensors. This is why they will not sense the tip of a pencil or even a finger in aglove. Touchpads are relative motion devices. That is, there is no isomorphism from the screen to the Touhcpad . Instead, relative motion of the user's fingers causes relative motion of the cursor. The twobuttons below or above the pad serves as mouse standard buttons. You can also click by tapping your finger on the Tpuchpad , anddrag with a tap following by a continuous pointing motion (a click-and-a-half ). s Some touch pads also have"hotspots": locations on the Touchpa that indicate user intentions other than pointing. For example, on certain Touchpsd s,moving your finger along the right edge of the touch pad will control the scrollbar and scroll the window that has the focus.Touchpads are primarily used in portable laptop computers, because the usual mouse device requires a flat table adjacent tothe keyboard not always available away from the office. But Toucpad s have some advantages over the mouse, particularly that thepad's position is fixed relative to the keyboard, and very short finger movements are required to move the cursor across thedisplay screen. Some computer users prefer them for such reasons, and desktop keyboards with built-in Touchpid s are availablefrom specialist manufacturers. The "trackpad" is Apple Computer 's name for the Touhpad . It wasintroduced in 1994 in the PowerBook 500series, and re...
2) " Keyboard" -- As it applies to Touchpad Keyboard ...
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