HP 11C Scientific Calculator – RPN Programmable Calculator for Engineering & Science

The HP 11C Scientific Calculator is a classic, high-performance programmable calculator trusted by engineers, scientists, and technical professionals for decades. Featuring Reverse Polish Notation (RPN) entry, the HP 11C offers efficient data entry and powerful programmability in a compact, pocket-sized design. Known for its durability, long battery life, and precision, this calculator provides advanced functions including complex number calculations, matrix operations, statistics, and root solving. Whether you're in engineering, physics, or finance, the HP 11C delivers the reliability and functionality you need in the field or the lab.

Product Features: 

• Reverse Polish Notation (RPN) entry system
• Programmable with 203 steps and 20 memory registers
• Performs scientific, engineering, and statistical functions
• Sleek, compact design with durable construction
• Long-lasting battery life for extended use
• Ideal for professionals in engineering, science, and math
• Highly collectible and revered for its legacy of accuracy

Note: This is a refurbished item that comes with a 90-day exchange warranty.  This has been serviced and calibrated to work as new.  Servicing can include replacement of belts, gears, capacitors, cleaning and re-lubricating all internal mechanisms.  Porter Electronics prides itself on only acquiring top quality used products that show minimal signs of use.  Buying from Porter Electronics you should expect a very nice, refurbished unit.  We do offer an extended warranty that can be purchased during checkout and will apply at the end of our already 90-day warranty 

Porter Electronics also offers free tech support for those needing extra help.  We offer a free digital download of the manual for this on this page in the “Downloads” tab.  If you are unable to locate the link, just use our Contact Us page to request one.