The Radio Shack EC-4001

Display: LED, 8 digits (5+2 in sci. not.)

Power: 9v cell, AC adaptor

Adv. Functions: Trig (rad. only), ln, e^x

Memories: 1

Programming: Steps 36 (unmerged), goto, conditional branching

Comments: Remarkably small, especially for 1977. But at the same time, the scientific functions are remarkably inaccurate!