The Sharp EL-5500II

Display: LCD, 24 digit display (numbers as 8+2 in sci. not., 10 digit precision)

Power: 3 CR2032 watch batteries

Adv. Functions: Trig, hyperbolics, logs, probability, statistics

Memories: 1 in calculator mode

Programming: Programs in BASIC, 3.5Kb of available user memory

Comments: A strange and somewhat fun mix between calculator and computer. But the BASIC and calculator modes are completely seperate. Sharp made many many variations of this model.