HP Voyager

HP-10C
HP-10C
TypeProgrammable scientific
ManufacturerHewlett-Packard
Introduced1982
Discontinued1984
Cost$80 USD
Calculator
Entry modeRPN
Display typeLCD seven-segment display
Display size10 digits
CPU
ProcessorHP Nut core (1LF5)
Programming
Programming language(s)Keystroke programmable (fully merged)
Memory register0…9 registers (R0R9) plus X, Y, Z, T, LAST X
Program steps9…79 lines
Other
Power consumption0.25 mW
HP-11C
HP-11C
TypeProgrammable scientific
ManufacturerHewlett-Packard
Introduced1981
Discontinued1989
Cost$135 USD
Calculator
Entry modeRPN
Display typeLCD seven-segment display
Display size10 digits
CPU
ProcessorHP Nut core (1LF5 / 1LM2 / 1LQ9)
Programming
Programming language(s)Keystroke programmable (fully merged)
Memory register0…20 registers (R0R9, R.0R.9) plus RI, X, Y, Z, T, LAST X
Program steps63…203 lines
Other
Power consumption0.25 mW
HP-12C
HP-12C
TypeProgrammable Financial
ManufacturerHewlett-Packard
Introduced1981
Costca. USD 70,-
Calculator
Entry modeClassical RPN (4 stack level)
Display typeLCD seven-segment display
Display size10 digits
CPU
ProcessorNut core (HP 1LF5 / HP 1LM2 / HP 1LQ9 / HP 1RR2 / Agilent/Marvell 2AF1) / ARM7TDMI core (Atmel AT91SAM7L128) / ARM Cortex-M4 core (Atmel ATSAM4LC2CA)
Programming
Programming language(s)keystroke programmable (fully merged)
Memory register7…20 (R0R9/CF0CF9, R.0R.9/CF10CF19) + 5 (n, i, PV, PMT, FV/CF20) + 5 (X, Y, Z, T, LAST X)
Program steps8…99
Other
Power supply4.5 V (3× LR44) or 3 V (1× or 2× CR2032) depending on model
Power consumption0.25 mW
Weight113 g
Dimensions128 × 79 × 15 mm
HP-15C
HP-15C
TypeProgrammable scientific
ManufacturerHewlett-Packard
Introduced1982
Discontinued1989
CostUSD 135 (Original) USD 99.99 – USD 179.99 (15C LE)
Calculator
Entry modeRPN
Display typeLCD seven-segment display
Display size10 digits
CPU
ProcessorHP Nut core (1LF5 / 1LM2 / 1LQ9) / ARM7TDMI core (Atmel AT91SAM7L128) (15C LE)
Programming
Programming language(s)Keystroke programmable (fully merged)
Memory register2…66 registers (R0…R9, R.0/R10…R.9/R20, R21…R65) plus RI, X, Y, Z, T, LAST X
Program steps0…448 lines
Other
Power consumption0.25 mW
Weight113 g
Dimensions128 × 79 × 15 mm
HP-16C
HP-16C, showing its model name on the display as a hexadecimal number
TypeProgrammable, computer science
ManufacturerHewlett-Packard
Introduced1982
Discontinued1989
Cost150 USD (1982) – 120 USD (1989)
Calculator
Entry modeRPN
Display typeLCD seven-segment display
Display size10 digits
CPU
ProcessorHP Nut
Programming
Programming language(s)Keystroke programming (fully merged)
Memory register203 bytes (shared with programs)
Program stepsup to 203 steps (shared with data registers)
Other
Power supplyLR44 1.5 V button cells
Power consumption0.25 mW
Weight113 g
Dimensions128 × 79 × 15 mm

The Hewlett-Packard Voyager series of calculators were introduced by Hewlett-Packard in 1981. All members of this series are programmable, use Reverse Polish Notation, and feature continuous memory. Nearly identical in appearance, each model provided different capabilities and was aimed at different user markets.