- Category:
- SCM
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[WORD]
- File Size:
- 19.06kb
- Update:
- 2008-10-13
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Description: SCM parallel I/O I always limited quantity, and sometimes parallel port need for other more important uses, generally will not be used for a large number of parallel I/O I show devoted to the drive circuit 80 C51 able to use the serial communication port with a small amount of I/O and expansion of chips for the display circuit? The answer is yes. 80C51 Serial Communications mouth is a powerful communications mouth, but is very handy communications mouth, for the display driver circuit could not have been more appropriate, Now we need to design the basis of this one with two serial communication lines with two general I/O Hau, Design of a four LED display circuit. Of course if coupled with two I/O lines I could easily achieved eight LED display circuit.
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