how can the sbuf register be told to send a string that is received?
"the only way you will get anywhere is by reading "the bible" more than once. Then read the tutorials here and at http://www.8052.com and then and only then try coding something."
Unfortunately not.
That will give you sufficient understanding of the 8051 - but you also need a basic understanding of the 'C' programming language.
So, in addition to the above, you will also need a 'C' textbook.
yes