HP-17B

The HP-17B was a pocket business calculator with algebraic logic. This model had an unusually sparse looking keyboard with a single shift key and shifted functions on only about 40% of its keys. Most of its functions were in menus. It had a two line dot matrix screen like the HP-27S but it always showed a menu on the bottom line. (Usually the main menu with its FINancial, BUSiness, SUM, TIME and SOLVE submenus.)