51 single-chip microcomputer keyboard I2C and 51 single chip microcomputer connection problem-CodePudding

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51 single-chip microcomputer keyboard I2C and 51 single chip microcomputer connection problem

Time：09-17

1 this is a 51 SCM according to the keypad needs the key value is sent to the host (another 51 single chip microcomputer)
2 the I2C communication
3 the train of thought about what kind of? (who is the host who is from machine communication is probably way?)

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