First was a Texas Instruments 59 programmable calculator (using magnetic strips) then an Exidy Sorcerer. I still miss some of the versatility of it, especially when it came to programming graphic shapes for games. Interchangeable ROM pacs were great too - BASIC, Word Processor & Z80 Assembler.
I can't remember too much detail now, but it was a starting point into Scott Adams adventures and later, after I added a floppy disk drive (160K/disk), I got hold of Zork 1,2 &3. Such memories from over half a lifetime ago.