This paper introduces the MSP430 SCM, vision driving of the CH452 numerical code tube and the control chip of keyboard scanning, and designs a kind of keyboard plan.
2
楼层信息由一个74ls48译码芯片驱动的共阴极的数码管显示。
The floor information is displayed by the figures tube of the total cathode that is drived by a 74ls48 code chip.
点击反馈