HP41C

Hp 41c. The calculator Lab Capacidad de expansión del HP41C I believe the calculator was redesigned because the electronics got smaller and they could redo the 41C* so that all the electronics could get in just one. It was the first Hewlett-Packard handheld device to feature an alphanumeric keyboard and expansion ports for peripherals

HP41C
HP41C from www.hpmuseum.org

I believe the calculator was redesigned because the electronics got smaller and they could redo the 41C* so that all the electronics could get in just one. The HP-41C can use either one HP82170A Quad Memory Module or up to four HP82106A Memory Modules

HP41C

The configuration of the HP-41C is very much like a computer system. Learn about the HP-41C, the first Hewlett-Packard handheld calculator with alphanumeric capabilities, and its successors, the HP-41CV and HP-41CX Hi Todd, the main difference is the trim around the screen

The HP 41C programmable calculator. Later came the HP-41CV and HP-41CX, offering more memory and functionality. The HP 41C was one of many Hewlett-Packard calculators to blur the line between calculator and computer

Ten classic electronic calculators from the 1970s and 1980s • The Register. Learn about the HP-41 series of calculators, considered by many to be the ultimate calculator Hi Todd, the main difference is the trim around the screen