本文采用VHDL语言和图形输入方式相结合的方法，在CPLD芯片上实现了电子车速里程表。
In the way of combining VHDL with graph, an inputted electronic speedometer in CPLD is designed.
本文采用VHDL语言和图形输入方式相结合的方法，在CPLD芯片上实现了电子车速里程表。该器件具有体积小、可靠性高、可升级和重复再利用等特点。
In the way of combining VHDL with graph, an inputted electronic speedometer in CPLD is designed. This device is small in size, stable in function, and can be upgraded and reused.
详细介绍霍尔速度传感器，里程计数脉冲的产生，步进电机的驱动和BL 2115集成电路在电子式车速里程表中的应用。
The Hall speed transducer, the generation of the mileage pulse, the driving of step motor and the application of integrated circuit of BL2115 in speedometer are introduced in detail.
详细介绍霍尔速度传感器，里程计数脉冲的产生，步进电机的驱动和BL 2115集成电路在电子式车速里程表中的应用。
The Hall speed transducer, the generation of the mileage pulse, the driving of step motor and the application of integrated circuit of BL2115 in speedometer are introduced in detail.
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