The upgrade soft of HA2020RH Electroacoustic Testing Equipment.
                          ( [2004-2-19]
Program explaination:
  1.Change to micrephone testing by <TAB> key instead of <+>and <->.
  2.Optimize the signal disposing part:make the signal send steadily.(Settle the question of testing line often drop)
Upgrade explaination:
  After the file is downloaded,open the compressed file by using the zip PKWare,then decompress it to the floppy disk.Put the floppy disk into the floppy drive of the testing instrument,and finish upgrade by running the "8"file in the floppy disk.