That's me at my second computer: a Tandy 1000 SX.  Note the *two* double-density 5.25" floppy drives.  This picture has to be about 1986, which would make me roughly 13 years old.  At this point in my life, I was splitting my time at the keyboard fairly evenly between coding BASIC and playing Infocom games.  That ratio shifted a little more to the gaming side the following year with the release of Vohaul's Revenge.