My first was the 800 I bought around 1982. My most recent was an 800xl in 2006 but in between those I also picked up several more 800s, some 400s, some 1200xls, some other 800xls, a 600xl, a 130xe, the Portfolio, some 1040STfs and a 1040STfm. My 800 was my second computer I ever owned and the...