Graphing
The graphing category at Porter Electronics features a comprehensive selection of refurbished graphing calculators, meticulously restored to deliver peak performance without the high price tag. Ideal for students, professionals, and educators alike, these calculators combine advanced mathematical functions with reliability, making them essential tools for anyone in need of robust calculation capabilities.
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ORIGINAL Soft Case for HP 50G/48G/48G+/48GX/49G+ Graphing Calculators
HP
$12.00This Original HP Soft Case is designed specifically for the HP 50G, 48G, 48G+, 48GX, and 49G+ graphing calculators, providing durable protection in a lightweight and compact design. Made from high-quality materials, this genuine HP accessory keeps your...$12.00 -
TDS Surveying Pro Card for use with HP 48GX Calculator
TDS
$329.99Equip your HP 48GX with the TDS Surveying Pro Card, a powerful plug-in module designed for professionals and students in surveying, civil engineering, and GIS. This robust card transforms your calculator into a full-featured field instrument capable of...$329.99 -
TDS Surveying GX Card for use with HP 48GX Calculator
TDS
$329.99Upgrade your HP 48GX calculator with the TDS Surveying GX Card, a powerful solution for land surveying and field data collection. This plug-in card enables advanced surveying features including topographic surveys, coordinate geometry (COGO), and...$329.99 -
On Sale
256K RAM Card for HP 48GX Calculators
Hewlett Packard
Now: $269.99Was: $299.99Upgrade your HP 48GX calculator with the TDS 256K RAM Card, offering extended storage for larger programs, complex calculations, and data-heavy tasks. This memory enhancement is perfect for engineers, students, and professionals seeking reliable...Now: $269.99Was: $299.99 -
On Sale
TDS 512K RAM Card for HP 48GX Calculators
HP
Now: $299.99Was: $329.99Expand the functionality of your HP 48GX calculator with the TDS 512K RAM Card. Built specifically for the HP 48GX series, this memory card provides essential storage for large programs, complex calculations, and extensive data sets. Whether you're a...Now: $299.99Was: $329.99 -
On Sale
HP-50G Graphing Calculator
Hewlett Packard
Now: $209.99Was: $329.99The HP-50G is one of Hewlett-Packard’s most powerful and versatile graphing calculators, designed for engineering professionals, college students, and anyone needing high-level computational capability. Known for its rugged build, RPN/RPL...Now: $209.99Was: $329.99 -
TDS COGO Survey Card and Overlay for HP 48GX Calculators
TDS
$329.99Enhance your HP 48GX calculator with the TDS COGO Survey Card and Overlay, the trusted solution for professional land surveying, coordinate geometry (COGO), and field data collection. Developed by Tripod Data Systems, this plug-in card delivers powerful...$329.99 -
On Sale
HP 82240B Enhanced Infrared Printer for HP Calculators
Hewlett Packard
Now: $209.99Was: $239.99The HP 82240B Infrared Printer is a compact, battery-operated thermal printer designed for seamless printing from compatible HP calculators and testing devices. Utilizing infrared communication (Redeye protocol), it eliminates the need for cables while...Now: $209.99Was: $239.99 -
On Sale
HP 48GX Calculator
Hewlett Packard
Now: $399.99Was: $439.99The HP 48GX Graphing Calculator is a powerful, expandable scientific calculator designed for engineers, scientists, and advanced math users. Featuring 128KB of onboard RAM, a large dot-matrix display, and support for Reverse Polish Notation (RPN), the...Now: $399.99Was: $439.99 -
On Sale
HP-48G Graphing Calculator
Hewlett Packard
Now: $279.99Was: $299.99The HP 48G Graphing Calculator is a powerful and reliable tool designed for students, engineers, and professionals in mathematics, science, and engineering fields. With its advanced features, high-resolution display, and support for Reverse Polish...Now: $279.99Was: $299.99