MM3 vs. CPU

[dsprague@bga.com (David C.C. Sprague)]

I am new to TRLog and contesting.  I have a recent copy of the TRLog
application and have a question for the group.  There seems to be two ways
to produce cw- using AEA's MM3 keyer or by using the computer's cpu to do
the keying.  My question is-- Is there an advantage of using the keyer
rather than the cpu save for an extra piece of equipment?

Thank you for your patience in my newbie question.