The system realizes digital testing, improves the testing accuracy and makes the result much more a reality because PC and parallel data interface are used.
由于采用了PC机及并行通讯接口，实现了数字化测量，提高了测量精度，具有很好的实时性。
For communication among parallel print port of PC and multiple single-chips, interface is divided into data, state and control groups respectively controlled by each register.
PC并行打印口与多台下位单片机的通讯，将接口分成数据、状态、控制三组，由其寄存器分别控制。
To provide examples about the interface of common I2C and AT24C02. And then to introduce the methods of simulating controlled I2C Bus interface with PC parallel socket.
给出了PC并行口与常用I2C器件AT24C02的接口方法实例，介绍了用PC并行口模拟I2C总线控制时序的实现方法。
The main work of design are follows: first we designed DSP-VC5402 development system include the interface of communicating with PC series port and HPI port communicating with PC parallel port;
本课题主要做了以下工作：首先设计了一套DSP—VC5402开发系统，包括计算机串行通信、HPI口与计算机并行口通信的接口电路；
This system was equipped two sets of communication interface with PC, the serial and parallel interface, select one of them according to the experiment condition and convenience.
该系统配备了两套与PC机的通信接口，即并口和串口通信。以实验条件和方便为宜选择其一。
Finally, the parallel interface in EPP mode is designed and the whole data encryption system designing between FPGA and PC is given to carry out the verification of data encryption results.
论文的最后设计了EPP模式的并行通信接口，实现了pc机与FPGA之间数据加密系统的调试验证。
Finally, the parallel interface in EPP mode is designed and the whole data encryption system designing between FPGA and PC is given to carry out the verification of data encryption results.
论文的最后设计了EPP模式的并行通信接口，实现了pc机与FPGA之间数据加密系统的调试验证。
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