介绍了利用VHDL硬件描述语言结合FPGA可编程器件进行数字钟的设计，并通过数码管驱动电路动态显示计时结果。
The paper introduces the design of digital clock based on FPGA and VHDL, the time of clock can be displayed with the digital driving circuit.
介绍用LED发光二极管组成数码显示的一种编码方法，并介绍了译码驱动电路及与单片机的接口。
This paper introduces a coding method of using LEDs to constitute digital display of Numbers. The related driving circuits and their interfaces with Micro-controllers are also introduced.
介绍了一种主要由8051单片机、MAX7219驱动的LED数码显示电路构成的相位差测量仪。
A new instrument which can measure the phase difference by 8051 microcontroller and LED digital display current driven by MAX7219 is introduced.
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