HP 33s Pocket Scientific calculator Grey,Silver

33s - 2 lines x 14 characters, 27 Memory registers, 31KB, 2 x CR2032, 127g The HP 33s Scientific Calculator includes all the features of the HP 30s plus:
- The choice of both efficient RPN and algebraic entry-system logic
- Programmable with keystroke programming
- HP Solve application
- 31KB memory with 27 independent storage registers
- 40 built-in physical constants
- Adjustable contrast 2-line display with menus, prompts and messages
- Edit, undo, delete capability
- Enhanced fractions mode, statistics and mathematics packages with base-n function
- Compact size and rubber grips for comfort