The Hewlett Packard HP-35

Display: LED, 10digits (+2 in sci. not.)

Power: 3 rechargable AA (in proprietary packaging), AC adaptor

Adv. Functions: Trig, logs

Memories: 1

Programming: None

Comments: This was the first pocket scientific calculator. Produced from 1972 to 1975 (this is a 1973, i.e., 2nd version, model) it started at $395 and was "down" to $295 near the end.