...a Polymorphic Systems Poly 88. This S100 bus computer used audio tape for program storage and had a 64x16-character B/W display. It was programmed using assembler and a variant of HP Basic, which I've always felt was superior to the Gates/Allen version used in the Altair and, later, in the TRS-80. But I quickly learned the difference between technical superiority and market superiority and had to shift my focus to the TRS-80. The Poly 88 software market was just too small to make a living from! I still have my Poly 88, but haven't powered it up in years.