The Museum of HP Calculators

Before HP Calculators (1614-1968)

The First HP Calculators (1968)

• HP 9100A&B Programmable RPN Calculators with no digital ICs

High End Desktop Series (1971)

• HP 9810A Second Generation RPN Calculator
• HP 9820A Full Algebraic Desktop
• HP 9830A Desktop Calculator with BASIC
• HP 9805A Algebraic Statistics Desktop
• HP 9815A/S Third Generation RPN Desktop
• HP 9825A First HPL Calculator

The Classics (1972)

• HP-35 The First Slide Rule Pocket Calculator
• HP-80 The First Business Calculator
• HP-45 Slide Rule++
• HP-65 The First Programmable Handheld
• HP-70 Inexpensive Business Calculator
• HP-55 Scientific/Programmable with Quartz Timer

Classic Printing Desktop Calculators (1973)

• HP-46 Printing Version of the HP-45
• HP-81 Printing Version of the HP-80
• HP-46, 56, 66 and HP-9805 Design Studies.

Second Generation Handheld Calculators (1975)

• HP-10 Handheld Printing Adding Machine
• HP-21 Second Generation HP-35
• HP-22 Business Calculator
• HP-25 Scientific Programmable
• HP-25C HP-25 with Continuous Memory
• HP-27 "Do Everything" Model (Sci/Stat/Math/Bus)
• HP-29C & HP-19C High End Programmables

Second Generation Desktop Calculators (1976)

• HP-91 Printing Scientific Calculator
• HP-92 Printing Business/Financial Calculator
• HP-95C Unreleased Printing Programmable Calculator

Second Generation Mag Card Programmables (1976)

• HP-67 & HP-97 Pocket & Desktop Calculators
• HP-97S I/O Calculator

In A Class By Itself (1977)

• HP-01 The Hewlett-Packard Calculator Watch

Third Generation of HP Calculators (1978)

• HP-31E Basic Scientific Calculator
• HP-32E Scientific/Statistical
• HP-33E/C Scientific Programmable Calculator
• HP-34C Scientific Prog. with Integration & Solve
• HP-37E Financial Calculator
• HP-38E/C Programmable Financial

Small Computers and Computer-like Calculators (1979)

• HP-41C Alphanumeric Programmables (includes CV & CX)
• HP-80 Series Small Computers
• HP-75C/D Smaller Computer
• HP-71B Even Smaller Computer/Calculator
• HP-94D/E/F Handheld Industrial Computer

The 10C series: Compact yet Sophisticated Calculators (1981)

• HP-10C Basic Scientific Programmable Calculator
• HP-11C More Advanced Scientific Programmable
• HP-12C Top Selling Business Calculator
• HP-15C Scientific with Matrix & Complex Math
• HP-16C The Computer Scientist Calculator

The RPL Family (1986)

• RPL A Platform for Powerful Calculators
• HP-18C Business Model with Solver
• HP-28C/S Scientifics with Symbolic Math and Solver
• HP-48S/SX Large Screen Scientifics with Symbolic Math

Some Interesting Later Models (1986)

• HP-27S Algebraic Do Everything Calculator
• HP-17B Algebraic Business Model
• HP-22S Algebraic Scientific Calculator
• HP-32S RPN Scientific with Complex Math
  (Including Anniversary Edition.)
• HP-42S RPN Scientific (HP-41C compatible)
• HP-14B (50th Anniversary Edition)
• The Xpander Unreleased Math Learning Aid
• HP-67CX Unreleased RPN / HPL / Linux Scientific
• Other Hewlett Packard Calculators and computers.