HP calculator

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Calculators by Hewlett-Packard

Current

RPN

Algebraic

Other

Selected

Timeline

HP 9100A / HP 9100B
First HP calculator; $5,000; magnetic card reader/writer, RPN, programmable

(initial series, circa 1974–1977)

HP-35
Scientific
c. Jan. 1972-1974; $395; World's first pocket scientific calculator
HP-45
Scientific
c. 1973; $400??; 9 registers
HP-46
Scientific?, with printer
along with the HP-81, the first HP ‘personal’ calculators with printers
HP-55, 'Merlin'
Scientific, programmable, with 100-hour timer
c. 1975–1977; $395
First with time calculations and 10-split quartz timer
HP-65
Scientific, programmable, with motorized magnetic card reader
$795; first programmable; octal/decimal base conversions
HP-80
Business, TVM, date calculations
HP-81
Business?, with printer

'Woodstock' series (c. Aug. 1975–1978)

HP-01
Calculator watch
c. 1977; First small algebraic model, multiple data types, dynamic time-based calculations
HP-10
Adding machine, printer
First and ~only~ adding machine by HP; c. 1977
HP-25C, 'Squash'
Scientific
'C' indicated 'Continuous Memory': low-power CMOS plus capacitor
first programmable calculator costing less than $200
c. 1975; first with ‘engineering display format’
HP-27
Universal (business, stats, scientific)
HP-91
battery powered, with printer
HP-92
Financial
c. 1977; first with switches for 360/365-day years and term beginning/end
HP-95C
First with ‘Partition Programming’

'Spice' series (c. 1978–1983)

(RPN; each displays 9 digits)
HP-32E, 'Thyme'
Scientific
HP-34C, 'Basil'
Scientific, advanced
first pocket calculator to support integration and root-finding
HP-38C, 'Chive'
Business, programmable
Compatible with HP-12C, except for bonds and depreciation calculations

Other

HP-67 Pro
Programmable, built-in magnetic card reader
c. 1976–1982; $?? ($1900 in c. 2015 dollars)
HP-70
Financial
c. 1974; TVM4 compound interest?
HP-90
Programmable, desktop size, built-in magnetic card reader, paper tape printer
c. 1976–1984; $?750? ($3200 in c. 2015 dollars)
HP-97
same as HP-67, but with added printer?
HP-15C
c. 1982; first with complex and matrix math
HP-16
c. 1982; first and only CS model with bases 2/8/10/16; configurable wordsize, complement mode

Post-1983

HP-16C
internal RPL, folding, IR printing, general solver; c. 1986
HP-28C
user RPL, first pocket calc with plotting
c. 1987; first with object-orientated types, symbolic math, and algebraic expression solver
HP-32S
c. 1988; first with RPN solver and program checksumming
HP-42S
c. 1988; first with polar complex numbers

2001

Closure of HP ACO division[1]

Current

HP 10bII
$40
HP 10s+
Scientific, classroom
2 line LCD
9 memory registers; solar-powered
HP 12C
Financial, $50
HP 12C Platinum
Financial, $60
HP 17bII
Financial, $70
HP 17bII+
Financial, $100
HP 35s
Scientific, professional
100+ built-in functions, linear regressions, two-variable stats, unit conversions, etc.
2 line LCD, 14 characters/line; CR2032 batteries
800 memory registers, 30K user memory
selectable RPN or algebraic entry logic
HP 300S+
Scientific, budget/student, $15
4 line LCD, 15 characters/line
315 built-in functions
9 memory registers; solar + battery
HP Prime G2
$150

Sequential naming order

  • 10C
  • 11C
  • 12C / 12C Platinum
  • 15C (enhanced 11C?)
  • 16C
  • 20S?
  • 25C
  • 28X / 28C? / 28S?
  • 30B / 30S?
  • 31S?
  • 32E / 32s? / 32sii?
  • 34C / 34X?
  • 35 / 35S?
  • 38C
  • 39
  • 41 / 41CV?
  • 42S (see 'Free42' iOS app by Thomas Okken and Swiss Micros DM-42)
  • 45
  • 48G / SX? / GX?
  • 49
  • 50
  • 55
  • 65
  • 67 Pro/SD
  • 70 (Finance)
  • 80
  • 97 Pro/SD

Glossary

ACO
Australian Calculator Operation
APD
Advanced Product Division, Cupertino, CA
RPN
Reverse Polish Notation
a type of postfix notation where the operator is entered after the operand
TVM
time-value-of-money

References

See also

  • Pickett N-500-ES slide rule
  • Casio fx-602P?
  • WP34S?
  • HP RPN
  1. ↑
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