Abstract: In order to study the implementation and the des!gn of FIR digital "filter ( DF), a software has been successfully developed to design FIR filter by Visual Basic6.0. To verify the correction of the software, some examples are given out, and the designed filters are eompared with ones designed by maflab. The result shows that there are no differences between them. The coefficients of FIR filter and the VHDL file can be directly output by the designed software, and the netlist file, generated by QuartusII6.0, can be used to configure the FPGA device. T...