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The Circle Can Rotate Clockwise And Back. Use Minimum Hardware To Build A Circuit To Indicate The Direction Of Rotating? |
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Answer» 2 SENSORS are required to find out the direction of rotating. They are placed like at the drawing. One of the m is connected to the data input of D flip-flop, and a second one - to the clock input. If the CIRCLE rotates the way clock sensor sees the light first while D input (second sensor) is ZERO - the output of the flip-flop equals zero, and if D input sensor "FIRES" first - the output of the flip-flop becomes high. 2 sensors are required to find out the direction of rotating. They are placed like at the drawing. One of the m is connected to the data input of D flip-flop, and a second one - to the clock input. If the circle rotates the way clock sensor sees the light first while D input (second sensor) is zero - the output of the flip-flop equals zero, and if D input sensor "fires" first - the output of the flip-flop becomes high. |
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