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HP Calculators

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HP 48S RPN graphing scientific calculator

HP 48S RPN graphing scientific calculator

HP 35S RPN/algebraic scientific calculator

HP 35S RPN/algebraic scientific calculator

HP 32Sii RPN scientific calculator

HP 32Sii RPN scientific calculator

HP 48G RPN graphing scientific calculator

HP 48G RPN graphing scientific calculator

HP 28S RPN graphing calculator

HP 28S RPN graphing calculator

HP 22S Algebraic scientific calculator

HP 22S Algebraic scientific calculator

WP 34S RPN scientific calculator - A former HP 30b financial converted with new firmware and a vinyl overlay. Easily the most powerful non-graphic scientific calculator available. You can convert them or buy them already converted.

WP 34S RPN scientific calculator - A former HP 30b financial converted with new firmware and a vinyl overlay. Easily the most powerful non-graphic scientific calculator available. You can convert them or buy them already converted.

HP 11C compact RPN scientific calculator.  This is one of five compact "Voyager" models initially made in the early 1980s. The 11C was not made after 1989, so they are somewhat rare and cost nearly as much now as they did when they were new.   This is a very capable little calculator. Not only is it packed with features, I like the horizontal layout and small size for an RPN scientific.

HP 11C compact RPN scientific calculator. This is one of five compact "Voyager" models initially made in the early 1980s. The 11C was not made after 1989, so they are somewhat rare and cost nearly as much now as they did when they were new. This is a very capable little calculator. Not only is it packed with features, I like the horizontal layout and small size for an RPN scientific.

HP 32S RPN scientific calculator

HP 32S RPN scientific calculator

HP 17BII RPN/algebraic financial calculator

HP 17BII RPN/algebraic financial calculator

HP 42S RPN scientific calculator

HP 42S RPN scientific calculator

HP 20b RPN/algebraic financial calculator

HP 20b RPN/algebraic financial calculator

HP 12C compact RPN financial calculator

HP 12C compact RPN financial calculator

HP 27S algebraic scientific calculator

HP 27S algebraic scientific calculator

HP 28C RPN graphing calculator

HP 28C RPN graphing calculator

HP 33S RPN/algebraic scientific calculator - Supposedly the replacement for the HP 32Sii, this is one of the most glaring examples of the laziness and carelessness displayed by Hewlett-Packard under the failed leadership of Carly Fiorina.   It is very functional, but the size and appearance is just terrible. HP basically gave up and let a Chinese company design this monstrosity, leading to a long line of unimpressive calculators.

HP 33S RPN/algebraic scientific calculator - Supposedly the replacement for the HP 32Sii, this is one of the most glaring examples of the laziness and carelessness displayed by Hewlett-Packard under the failed leadership of Carly Fiorina. It is very functional, but the size and appearance is just terrible. HP basically gave up and let a Chinese company design this monstrosity, leading to a long line of unimpressive calculators.


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HP 48G RPN graphing scientific calculator

HP 48G RPN graphing scientific calculator

WP 34S RPN scientific calculator - A former HP 30b financial converted with new firmware and a vinyl overlay. Easily the most powerful non-graphic scientific calculator available. You can convert them or buy them already converted.

WP 34S RPN scientific calculator - A former HP 30b financial converted with new firmware and a vinyl overlay. Easily the most powerful non-graphic scientific calculator available. You can convert them or buy them already converted.

HP 32S RPN scientific calculator

HP 32S RPN scientific calculator

HP 33S RPN/algebraic scientific calculator - Supposedly the replacement for the HP 32Sii, this is one of the most glaring examples of the laziness and carelessness displayed by Hewlett-Packard under the failed leadership of Carly Fiorina.   It is very functional, but the size and appearance is just terrible. HP basically gave up and let a Chinese company design this monstrosity, leading to a long line of unimpressive calculators.

HP 33S RPN/algebraic scientific calculator - Supposedly the replacement for the HP 32Sii, this is one of the most glaring examples of the laziness and carelessness displayed by Hewlett-Packard under the failed leadership of Carly Fiorina. It is very functional, but the size and appearance is just terrible. HP basically gave up and let a Chinese company design this monstrosity, leading to a long line of unimpressive calculators.

WP 31S RPN scientific calculator - A former HP 30b financial converted with new firmware and a vinyl overlay. This is a streamlined version of the WP 34S with a less cluttered keyboard. You can convert them or buy them already converted.

WP 31S RPN scientific calculator - A former HP 30b financial converted with new firmware and a vinyl overlay. This is a streamlined version of the WP 34S with a less cluttered keyboard. You can convert them or buy them already converted.

HP 20S algebraic scientific calculator

HP 20S algebraic scientific calculator

Feb. 1, 1972. First scientific hand-held calculator, the HP-35, is introduced, by Hewlett-Packard

Feb. 1, 1972. First scientific hand-held calculator, the HP-35, is introduced, by Hewlett-Packard

HP-41CX Hewlett Packard Calculator HP 41CX Works #HP

HP 41CX Scientific Calculator

HP-41CX Hewlett Packard Calculator HP 41CX Works #HP

Used HP-48GX Hewlett Packard Calculator HP 48GX 128K ram

Used HP-48GX Hewlett Packard Calculator HP 48GX 128K ram

The 1977 HP Smartwatch

The 1977 HP Smartwatch

HP 10bII+ Financial Calculator (Have in circulation)

HP 10bII+ Financial Calculator (Have in circulation)

HP 12c Financial Calculator for iPhone is a great companion tool for anyone in accounting, real estate, finance, or banking. Features include calculating the time value of money, net present value, and more. It also supports RPN entry, which many financial pros are already familiar with. The traditional HP 12c financial calculator is used by many industry professionals and the iPhone...

HP 12c Financial Calculator for iPhone is a great companion tool for anyone in accounting, real estate, finance, or banking. Features include calculating the time value of money, net present value, and more. It also supports RPN entry, which many financial pros are already familiar with. The traditional HP 12c financial calculator is used by many industry professionals and the iPhone...

3-D sculpted HP calculator by The Butter End Cakery

3-D sculpted HP calculator by The Butter End Cakery

Pro Scientific Calc w HP Solve - HP Calculators - F2215AA#ABA

Pro Scientific Calc w HP Solve - HP Calculators - F2215AA#ABA

HP 30b with overlay for WP 34S

HP 30b with overlay for WP 34S

HP 11C - with continuous memory and advanced programming capabilities. Its light weight and unique layout made it an instant hit.

HP 11C - with continuous memory and advanced programming capabilities. Its light weight and unique layout made it an instant hit.