The Embedded Multi-serialports communication converter for Power Quality Monitoring System by using free software is designed ,the system is modularizated ,and eight serialports communication converter is setted to implement asynchronous serial data transmission through ethernet.

In this paper, after the analysis of various parallel load flow algorithms an asynchronous parallel algorithm, i.

The convergence theorems of asynchronous parallel successive overrelaxationare established.

The article,based on asynchronous parallel quick sort algorithm,analyzes the sorting process,gives the multi-thread implment,points out the executing feature.

A new way is presented to solve the asynchronous execution problem and black screen problem when the FORTRAN s executable files are used by the shell func-tions.

In this paper,a new method of the direction of out-of-step center allocation-function-derivative method is proposed for asynchronous operation based on the equivalent electromotive force at two ends of tie line,the location between oscillation center and center of out-of-step,and their movement characteristics are analyzed.

Design of RS232 asynchronous serial port IP-core based on FPGA

DSP has high speed,,it is useful for high speed data samping; there are many peripherals in DSP chips,such as asynchronous serial port,it is easy to add simply interface between PC and DSP for asynchronous serial communication.