It s a programm to send simple data from computer to MCS-51 device by RS232.

51+FPGA架构的通讯口扩展,用verilog语言编写，扩展了Ｉ２Ｃ，ＳＰＩ，ＲＳ２３２。-51+ FPGA architectures communication port expansion, with verilog language, extends the I2C, SPI, RS232.