| 摘要 |
A logic circuit uses hardware to process keyboard scanning, more especially, a microprocessing system inputs the signal through a pressed key into a control circuit for conducting operation; since the column input end has electric resistance with higher driving ability than that of the row output/input end, a higher electric potential status is thereby obtained and conducted with the circuit through a pressed key to make the high and the lower electric potentials approach in accordance with each other and generate electric potential change, or through a converting method of automatically driving electric potential, the innovative effect of the present invention is achieved.
|
