hi
no…
there is no additional driver required to send data from PC hyperterminal to microcntroller..
all the coding has to do in microcontroller end …
u just write any character in hyperterminal and it to will transfer to SBUF reg in microcontroller..
copy the content of SBUF reg and use that data ..
important thing is that the recieved data is in ascii format ..u have to convert to some other format as per ur requirement ..
regards…