A hardware connection: parole a STC89C52RC chip hardware system circuit connection is as follows:
1, P1.0 - P1.7 control LED lamp D1 ~ D8 (anode)
2, P3.4 ~ P3.7 respectively by KEY1 ~ KEY4 (press the read low level, let go read high level)
3, P3.2 connection active buzzer (low level trigger)
4, P2.0 ~ P2.3 control four of the eight sections of the power of the digital tube, A total of anode every (low level trigger), P0 control the glyph control end of the digital tube, P0.0 ~ P0.7 respectively corresponding to A ~ H,

CodePudding user response:

Search on the net a ready-made projects directly