"基于AT89S52的单片机花样流水和奏乐设计"

The course design of microcontroller running water and singing patterns is based on the chip AT89s52, which has standard features including 8k bytes of Flash memory, 256 bytes of RAM, 32 I/O port lines, watchdog timer, 2 data pointers, three 16-bit timers/counters, a 6-vector 2-level interrupt structure, full-duplex serial port, on-chip crystal oscillator and clock circuit. The microcontroller running water and singing circuit includes the microcontroller minimum system circuit, buzzer driver circuit, and LED driver circuit. The microcontroller minimum system refers to the system composed of the minimum components required for the microcontroller to operate, including the microcontroller, crystal oscillator circuit, and reset circuit; the buzzer driver circuit is composed of a buzzer, transistor 8550, and resistors, for driving the buzzer; the LED circuit includes 24 LEDs and three 1K resistors. The keywords of the design are AT89S51, LED running water, and buzzer singing.