Originally want to go online to find a find solutions, the results showed that the book is MCU teacher oneself plait, question since the BBS,
51 MCU matrix button control in the last of the eight digital tube light up 0 ~ F learned, then advanced a little have no idea,
Press the button for the first time in the last eight digital tube display the corresponding characters, press another button for the second time, also in last place according to corresponding characters, while the original characters into a full automatic overflow, after eight have bosses to give directions,

CodePudding user response:

The original characters into a refers to the character for the first time the last show?

CodePudding user response:

There is written in the main function P0=0 xf0; P0=0; These two words

CodePudding user response:

Yes, that's the last input characters