The Museum of HP Calculators

HP-19C Features

Features in optional ROMs are listed as Option.
Features in HP mag card or tape Application Pacs are listed as +.
Other software is not included.

Display and Keyboard HP-19C

Display type LED

Display format 1 Line

FIXed number format Yes

SCIentific number format Yes

ENGineering number format Yes

STanDard / ALL number format -

Alpha messages and prompts -

Softkeys labeled by mag. card or overlay -

Softkeys labeled by display menus -

Softkeys with neither labeling system -

Status annunciators -

Redefinable keyboard -

Logic HP-19C

Logic system RPN

Stack levels 4

Last x Yes

Undo -

Precedence -

Parentheses -

Storage Addition (STO +) Y

Storage Arithmetic (STO +, -, ×, ÷) Yes

Storage Exponentiation (STO ^) -

Recall Arithmetic -

Named variables -

Multiple data types -

Math HP-19C

+, -, ×, ÷ Yes

1/x Yes

sq. root Yes

x² Yes

LOG x Yes

10^x Yes

LN x Yes

e^x Yes

y^x Yes

pi Yes

% Yes

% change -

INTeger truncation and ABSolute value Yes

Trigonometric functions (SIN, COS etc.) Yes

Hyperbolic trig. (SINH, COSH etc.) -

# of trig. modes (degrees, radians, grads) 3

Advanced Math HP-19C

Solver / root finder -

Numeric integration -

Complex numbers -

Matrix operations -

Symbolic operations -

Fractions -

Plotting and graphics (display) -

Plotting and graphics (printer / plotter) -

Statistical HP-19C

Mean, standard deviation (# of variables) 2

Summation of n, x, x² Yes

Summation of n, x, x², y Yes

Summation of n, x, x², y, xy Yes

Summation of n, x, x², y, y², xy Yes

Summation of lists -

Random number generator -

Linear regression, estimate -

Curve fitting -

Correlation coefficient -

Normal distribution -

Factorial -

Gamma -

Combinations and permutations -

Scientific and Time
HP-19C

Polar / rectangular conversions Yes

Base conversions (2, 8, 10, 16) -

Arithmetic in bases 2, 8 and 16 -

Bit operations (AND, OR, XOR, ...) -

Selectable word size (1-64 bits) -

Selectable compliment mode (1's, 2's, unsigned) -

Decimal hrs / hrs.min.sec. conversions Yes

Hrs.min.sec arithmetic -

Time of day clock -

Timer -

Dynamic calculations (timer × rate) -

Alarms -

Unit Conversions
HP-19C

Centimeters / inches -

Millimeters / inches -

Meters / feet -

Kilograms / pounds (mass) -

Newtons / pounds (force) -

British thermal units / joules -

Liters / gallons -

° Celsius / ° Fahrenheit -

Other -

User-defined units -

Time Value of Money HP-19C

Number of payments (n) -

Interest rate (i) -

Present Value (PV) -

Payment (PMT) -

Future Value (FV) -

Cash Flow Analysis HP-19C

Net present value (NPV) -

Internal rate of return (IRR) -

Amortization HP-19C

Accumulated Interest (ACC INT) -

Balance (BAL) -

Depreciation HP-19C

Straight line (SL) -

Sum of the years digits (SOYD) -

Declining balance (DB) -

Bonds and calendar functions HP-19C

Bond price -

Bond yield -

Date arithmetic / calendar functions -

Memory and Programming HP-19C

Programming language(s) RPN

RAM / Max # of variables or addressable registers 30 Registers

Max # of program steps 98

RAM / Max vars or regs with full optional RAM -

Max # of prog steps with full optional RAM -

Merged program steps
Yes

Manual register / program memory allocation -

Automatic register / program memory allocation
-

Overlapped register and program memory -

Continuous memory
Yes*

Flags -

Conditional tests 8

Subroutine levels 3

Indexed looping (increment by +/- 1, end at 0) Yes

Indexed looping (choice of increment and end) -

Multiple index / loop registers -

Line number addressing -

Branching by relative line number Yes

Global program label addressing Yes

Local program label addressing -

Indirect / computed addressing and control Yes

Multiple indirection registers -

Pause Yes

Alpha messages and prompts in programs -

Alpha program listings -

Alpha string manipulation -

Program step insert / delete -

I/O and Expansion Features HP-19C

ROM modules -

RAM modules or expansion option -

General expansion slots / connector -

Magnetic card reader/writer -

Tape drive -

Optical wand -

Serial port -

Infrared input -

Infrared output -

Printer Yes

Networking -

Other -

General HP-19C

Sounds -

Self test -

Hard case (in addition to soft case) -

Additional Features -

Batteries Rechargeable

Length (inches) 6.5"

Width 3.5"

Height 1.1"

Weight (oz or lbs) 13 oz

Year of introduction 1977

Features in optional ROMs are listed as Option.
Features in HP mag card or tape Application Pacs are listed as +.
Other software is not included.

Unlim means limited only by available memory.

HP-19C notes:

The HP-29C has its own features page.
16 of the 30 registers were continuous.

Go to the feature comparison page
Go back to the main exhibit hall

Features in optional ROMs are listed as Option. Features in HP mag card or tape Application Pacs are listed as +. Other software is not included.

Display and Keyboard	HP-19C
Display type	LED
Display format	1 Line
FIXed number format	Yes
SCIentific number format	Yes
ENGineering number format	Yes
STanDard / ALL number format	-
Alpha messages and prompts	-
Softkeys labeled by mag. card or overlay	-
Softkeys labeled by display menus	-
Softkeys with neither labeling system	-
Status annunciators	-
Redefinable keyboard	-

Logic	HP-19C
Logic system	RPN
Stack levels	4
Last x	Yes
Undo	-
Precedence	-
Parentheses	-
Storage Addition (STO +)	Y
Storage Arithmetic (STO +, -, ×, ÷)	Yes
Storage Exponentiation (STO ^)	-
Recall Arithmetic	-
Named variables	-
Multiple data types	-

Math	HP-19C
+, -, ×, ÷	Yes
1/x	Yes
sq. root	Yes
x²	Yes
LOG x	Yes
10^x	Yes
LN x	Yes
e^x	Yes
y^x	Yes
pi	Yes
%	Yes
% change	-
INTeger truncation and ABSolute value	Yes
Trigonometric functions (SIN, COS etc.)	Yes
Hyperbolic trig. (SINH, COSH etc.)	-
# of trig. modes (degrees, radians, grads)	3

Advanced Math	HP-19C
Solver / root finder	-
Numeric integration	-
Complex numbers	-
Matrix operations	-
Symbolic operations	-
Fractions	-
Plotting and graphics (display)	-
Plotting and graphics (printer / plotter)	-

Statistical	HP-19C
Mean, standard deviation (# of variables)	2
Summation of n, x, x²	Yes
Summation of n, x, x², y	Yes
Summation of n, x, x², y, xy	Yes
Summation of n, x, x², y, y², xy	Yes
Summation of lists	-
Random number generator	-
Linear regression, estimate	-
Curve fitting	-
Correlation coefficient	-
Normal distribution	-
Factorial	-
Gamma	-
Combinations and permutations	-

Scientific and Time	HP-19C
Polar / rectangular conversions	Yes
Base conversions (2, 8, 10, 16)	-
Arithmetic in bases 2, 8 and 16	-
Bit operations (AND, OR, XOR, ...)	-
Selectable word size (1-64 bits)	-
Selectable compliment mode (1's, 2's, unsigned)	-
Decimal hrs / hrs.min.sec. conversions	Yes
Hrs.min.sec arithmetic	-
Time of day clock	-
Timer	-
Dynamic calculations (timer × rate)	-
Alarms	-

Unit Conversions	HP-19C
Centimeters / inches	-
Millimeters / inches	-
Meters / feet	-
Kilograms / pounds (mass)	-
Newtons / pounds (force)	-
British thermal units / joules	-
Liters / gallons	-
° Celsius / ° Fahrenheit	-
Other	-
User-defined units	-

Time Value of Money	HP-19C
Number of payments (n)	-
Interest rate (i)	-
Present Value (PV)	-
Payment (PMT)	-
Future Value (FV)	-

Cash Flow Analysis	HP-19C
Net present value (NPV)	-
Internal rate of return (IRR)	-

Amortization	HP-19C
Accumulated Interest (ACC INT)	-
Balance (BAL)	-

Depreciation	HP-19C
Straight line (SL)	-
Sum of the years digits (SOYD)	-
Declining balance (DB)	-

Bonds and calendar functions	HP-19C
Bond price	-
Bond yield	-
Date arithmetic / calendar functions	-

Memory and Programming	HP-19C
Programming language(s)	RPN
RAM / Max # of variables or addressable registers	30 Registers
Max # of program steps	98
RAM / Max vars or regs with full optional RAM	-
Max # of prog steps with full optional RAM	-
Merged program steps	Yes
Manual register / program memory allocation	-
Automatic register / program memory allocation	-
Overlapped register and program memory	-
Continuous memory	Yes*
Flags	-
Conditional tests	8
Subroutine levels	3
Indexed looping (increment by +/- 1, end at 0)	Yes
Indexed looping (choice of increment and end)	-
Multiple index / loop registers	-
Line number addressing	-
Branching by relative line number	Yes
Global program label addressing	Yes
Local program label addressing	-
Indirect / computed addressing and control	Yes
Multiple indirection registers	-
Pause	Yes
Alpha messages and prompts in programs	-
Alpha program listings	-
Alpha string manipulation	-
Program step insert / delete	-

I/O and Expansion Features	HP-19C
ROM modules	-
RAM modules or expansion option	-
General expansion slots / connector	-
Magnetic card reader/writer	-
Tape drive	-
Optical wand	-
Serial port	-
Infrared input	-
Infrared output	-
Printer	Yes
Networking	-
Other	-

General	HP-19C
Sounds	-
Self test	-
Hard case (in addition to soft case)	-
Additional Features	-
Batteries	Rechargeable
Length (inches)	6.5"
Width	3.5"
Height	1.1"
Weight (oz or lbs)	13 oz
Year of introduction	1977
Features in optional ROMs are listed as Option. Features in HP mag card or tape Application Pacs are listed as +. Other software is not included. Unlim means limited only by available memory.