
BASICS OF COMPUTER SYSTEMS 47
to parallel form (internally) and saved in a register. Similarly parallel data can be converted to
serial form and sent out as one bit at a time, using the SOD. Of course, there are special instruc-
tions to aid in the serial transmission process.
Conclusion
We have discussed all pins of the 8085 processor, except the status pins S
0
and S
1
. ese are
pins which carry some status information, which is not very important for small systems. With
this, we conclude our review of the 8085, and will go on to the task of understanding the x86
microprocessors, starting from the 8086. at will be from Chapter 1 onwards.
KEY ...