Is the touch screen instantaneous or is there a lag time between when the stylus touches the screen and when the calculator acknowledges the selection?
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Touch Screen
Started by
ASTRO491K
, Feb 21 2010 06:24 PM
2 replies to this topic
#1
Posted 21 February 2010 - 06:24 PM
#3
Posted 28 February 2010 - 01:01 AM
When you tap on a touchscreen, it transfers your "touch" to electrical current or change in voltage (etc...) and the processor then analyzes to carry out the coordinate of the screen that you have tapped. As they know the location of the screen, they can execute your command.
Therefore it MUST take sometimes for the device to respond your tap, but in micro or nano second, especially with high speed processor. So you may not recognize the lag time between the tap and the respond of the device. If I remember correctly, ClassPad has 20 MHz processor (or some value around that), and it can recognize your tap instantly.
Therefore it MUST take sometimes for the device to respond your tap, but in micro or nano second, especially with high speed processor. So you may not recognize the lag time between the tap and the respond of the device. If I remember correctly, ClassPad has 20 MHz processor (or some value around that), and it can recognize your tap instantly.
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