HP-42S Scientific Calculator

Experience legendary scientific computing performance with the HP-42S Scientific Calculator. Widely regarded as one of the finest handheld calculators ever produced, the HP-42S combines powerful mathematical capabilities with HP’s renowned Reverse Polish Notation (RPN) entry system. Ideal for engineers, scientists, students, and collectors, this advanced calculator delivers precision, programmability, and reliability in a compact handheld design.

Key Features

• Advanced scientific calculator with extensive mathematical and engineering functions
• Reverse Polish Notation (RPN) entry system for fast and efficient calculations
• Supports algebraic, trigonometric, logarithmic, and statistical functions
• Built-in equation solver and numerical integration capabilities
• Matrix operations and complex number calculations
• Programmable with user-defined functions and custom applications
• Multi-line LCD display for clear viewing of equations and results
• Large memory capacity for variables and programs
• Durable handheld design built for long-term reliability
• Powered by batteries for portable operation

Refurbishment & Warranty

• Professionally refurbished, fully tested, and cleaned
• Keyboard and display inspected for proper operation
• Memory and functions fully verified
• Includes a 90-day exchange warranty
• Optional extended protection available
• Free downloadable manual and U.S.-based tech support

What's Included

• HP-42S Scientific Calculator
• Battery Cover
• Batteries

Ideal For

Perfect for engineers, scientists, students, educators, collectors, and technical professionals seeking a powerful programmable scientific calculator with advanced mathematical capabilities and HP's acclaimed RPN interface.