The Hewlett Packard HP-41C

Display: 14 segment LCD, 12 digits

Power: 4 N cells, recharable pack also available

Adv. Functions: Trig, hyperbolics, logs, stats, even sound!

Memories: 63

Programming: 410b, goto, conditional branching, subroutines, flags, labels, re-mappable keys

Comments: With alphanumeric display, 4 expansion ports, and a huge memory, the HP-41c was an incredibly versatile machine. When introduced in 1979, it had a price of $395. It was later replaced by the 41CV (with twice the memory and more functions) then the 41CX (which included timer functions).