Calculator Comparison

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-48S	HP-67
Display type	LCD	LED
Display format	8Line	1 Line
FIXed number format	Yes	Yes
SCIentific number format	Yes	Yes
ENGineering number format	Yes	Yes
STanDard / ALL number format	Yes	-
Alpha messages and prompts	Yes	-
Softkeys labeled by mag. card or overlay	-	Yes
Softkeys labeled by display menus	Yes	-
Softkeys with neither labeling system	-	-
Status annunciators	Yes	-
Redefinable keyboard	Yes	-
Logic	HP-48S	HP-67
Logic system	RPN/RPL	RPN
Stack levels	Unlim	4
Last x	Yes	Yes
Undo	Yes	-
Precedence	Yes	-
Parentheses	Yes	-
Storage Addition (STO +)	Yes	Yes
Storage Arithmetic (STO +, −, ×, ÷)	Yes	Yes
Storage Exponentiation (STO ^)	-	-
Recall Arithmetic	-	-
Named variables	Yes	-
Multiple data types	Yes	-
Directories	Yes	-
Math	HP-48S	HP-67
+, −, ×, ÷	Yes	Yes
1/x	Yes	Yes
√	Yes	Yes
x²	Yes	Yes
LOG x	Yes	Yes
10^x	Yes	Yes
LN x	Yes	Yes
e^x	Yes	Yes
y^x	Yes	Yes
π	Yes	Yes
%	Yes	Yes
% change	Yes	Yes
INTeger truncation and ABSolute value	Yes	Yes
Trigonometric functions (SIN, COS etc.)	Yes	Yes
Hyperbolic trig. (SINH, COSH etc.)	Yes	+
# of trig. modes (degrees, radians, grads)	3	3
Advanced Math	HP-48S	HP-67
Solver / root finder	Yes	+
Numeric integration	Yes	+
Complex numbers	Yes	+
Matrix operations	Yes	+ (max 4×4)
Matrix writer	Yes	-
Equation writer	Yes	-
Symbolic operations	Yes	-
Fractions	Yes*	-
Plotting and graphics (display)	Yes	-
Plotting and graphics (printer / plotter)	Option	-
Statistical	HP-48S	HP-67
Mean, standard deviation (# of variables)	Multiple	2
Σ of n, x, x²	-	Yes
Σ of n, x, x², y	-	Yes
Σ of n, x, x², y, xy	-	Yes
Σ of n, x, x², y, y², xy	-	Yes
Σ of lists	Yes	-
Random number generator	Yes	+
Linear regression, estimate	Yes	+
Curve fitting	Yes	-
Correlation coefficient	Yes	+
Normal distribution	Yes	+
Factorial	Yes	Yes
Gamma	Yes	+
Combinations and permutations	Yes	+
Scientific and Time	HP-48S	HP-67
Polar / rectangular conversions	Yes	Yes
Base conversions (2, 8, 10, 16)	Yes	+
Arithmetic in bases 2, 8 and 16	Yes	-
Bit operations (AND, OR, XOR, ...)	Yes	-
Selectable word size (1-64 bits)	Yes	-
Selectable complement mode (1's, 2's, unsigned)	-	-
Decimal hrs / hrs.min.sec. conversions	Yes	Yes
Hrs.min.sec arithmetic	Yes	Yes
Time of day clock	Yes	-
Timer	Yes	-
Dynamic calculations (timer × rate)	-	-
Alarms	Yes	-
Unit Conversions	HP-48S	HP-67
Centimeters / inches	Yes	-
Millimeters / inches	Yes	+
Meters / feet	Yes	+
Kilograms / pounds (mass)	Yes	+
Newtons / pounds (force)	Yes	+
British thermal units / joules	Yes	+
Liters / gallons	Yes	+
° Celsius / ° Fahrenheit	Yes	+
Other	Yes	+
User-defined units	Yes	-
Time Value of Money	HP-48S	HP-67
Number of payments (n)	-	+
Interest rate (i)	-	+
Present Value (PV)	-	+
Payment (PMT)	-	+
Future Value (FV)	-	+
Cash Flow Analysis	HP-48S	HP-67
Net present value (NPV)	-	+
Internal rate of return (IRR)	-	+
Amortization	HP-48S	HP-67
Accumulated Interest (ACC INT)	-	+
Balance (BAL)	-	+
Depreciation	HP-48S	HP-67
Straight line (SL)	-	+
Sum of the years digits (SOYD)	-	+
Declining balance (DB)	-	+
Bonds and calendar functions	HP-48S	HP-67
Bond price	-	+
Bond yield	-	+
Date arithmetic / calendar functions	Yes	+
Memory and Programming	HP-48S	HP-67
Programming language(s)	RPL	RPN
RAM / Max # of variables or addressable registers	32K Bytes	26 Registers
Max # of program steps	Unlim	224
RAM / Max vars or regs with full optional RAM	-	-
Max # of prog steps with full optional RAM	-	-
Merged program steps	Yes	Yes
Manual register / program memory allocation	-	-
Automatic register / program memory allocation	Yes	-
Overlapped register and program memory	-	-
Continuous memory	Yes	-
Flags	128	4
Conditional tests	Many	8
Subroutine levels	Unlim	3
Indexed looping (increment by +/- 1, end at 0)	Yes	Yes
Indexed looping (choice of increment and end)	Yes	-
Multiple index / loop registers	Yes	-
Line number addressing	-	-
Branching by relative line number	-	Yes
Global program label addressing	Yes	Yes
Local program label addressing	Yes	-
Indirect / computed addressing and control	Yes	Yes
Multiple indirection registers	Yes	-
Pause	Yes	Yes
Alpha messages and prompts in programs	Yes	-
Alpha program listings	Option	-
Alpha string manipulation	Yes	-
Program step insert / delete	Yes	Yes
I/O and Expansion Features	HP-48S	HP-67
ROM modules	-	-
RAM modules or expansion option	-	-
General expansion slots / connector	-	-
Magnetic card reader/writer	-	Yes
Tape drive	-	-
Disk drive	Option	-
Upgradeable firmware	-	-
Optical wand	-	-
Serial port	Yes	-
Infrared input	Yes	-
Infrared output	Yes	-
Printer	Option	-
Networking	-	-
Other	-	-
General	HP-48S	HP-67
Sounds	Yes	-
Self test	Yes	-
Hard case (in addition to soft case)	-	-
Additional Features	-	-
Batteries	3 AAA	Rechargeable
Length (inches)	7.1"	6.0"
Width	3.2"	3.2"
Height	1.1"	1.4"
Weight (oz or lbs)	8oz	11 oz
Year of introduction	1991	1976
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.

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-48S

HP-67

Display type

LCD

LED

Display format

8Line

1 Line

FIXed number format

Yes

SCIentific number format

Yes

ENGineering number format

Yes

STanDard / ALL number format

Yes

Alpha messages and prompts

Yes

Softkeys labeled by mag. card or overlay

Yes

Softkeys labeled by display menus

Yes

Softkeys with neither labeling system

Status annunciators

Yes

Redefinable keyboard

Yes

Logic

HP-48S

HP-67

Logic system

RPN/RPL

RPN

Stack levels

Unlim

Last x

Yes

Undo

Yes

Precedence

Yes

Parentheses

Yes

Storage Addition (STO +)

Yes

Storage Arithmetic (STO +, −, ×, ÷)

Yes

Storage Exponentiation (STO ^)

Recall Arithmetic

Named variables

Yes

Multiple data types

Yes

Directories

Yes

Math

HP-48S

HP-67

+, −, ×, ÷

Yes

1/x

Yes

√

Yes

x²

Yes

LOG x

Yes

10^x

Yes

LN x

Yes

e^x

Yes

y^x

Yes

% change

Yes

INTeger truncation and ABSolute value

Yes

Trigonometric functions (SIN, COS etc.)

Yes

Hyperbolic trig. (SINH, COSH etc.)

Yes

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

Advanced Math

HP-48S

HP-67

Solver / root finder

Yes

Numeric integration

Yes

Complex numbers

Yes

Matrix operations

Yes

+ (max 4×4)

Matrix writer

Yes

Equation writer

Yes

Symbolic operations

Yes

Fractions

Yes*

Plotting and graphics (display)

Yes

Plotting and graphics (printer / plotter)

Option

Statistical

HP-48S

HP-67

Mean, standard deviation (# of variables)

Multiple

Σ of n, x, x²

Yes

Σ of n, x, x², y

Yes

Σ of n, x, x², y, xy

Yes

Σ of n, x, x², y, y², xy

Yes

Σ of lists

Yes

Random number generator

Yes

Linear regression, estimate

Yes

Curve fitting

Yes

Correlation coefficient

Yes

Normal distribution

Yes

Factorial

Yes

Gamma

Yes

Combinations and permutations

Yes

Scientific and Time

HP-48S

HP-67

Polar / rectangular conversions

Yes

Base conversions (2, 8, 10, 16)

Yes

Arithmetic in bases 2, 8 and 16

Yes

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

Yes

Selectable word size (1-64 bits)

Yes

Selectable complement mode (1's, 2's, unsigned)

Decimal hrs / hrs.min.sec. conversions

Yes

Hrs.min.sec arithmetic

Yes

Time of day clock

Yes

Timer

Yes

Dynamic calculations (timer × rate)

Alarms

Yes

Unit Conversions

HP-48S

HP-67

Centimeters / inches

Yes

Millimeters / inches

Yes

Meters / feet

Yes

Kilograms / pounds (mass)

Yes

Newtons / pounds (force)

Yes

British thermal units / joules

Yes

Liters / gallons

Yes

° Celsius / ° Fahrenheit

Yes

Other

Yes

User-defined units

Yes

Time Value of Money

HP-48S

HP-67

Number of payments (n)

Interest rate (i)

Present Value (PV)

Payment (PMT)

Future Value (FV)

Cash Flow Analysis

HP-48S

HP-67

Net present value (NPV)

Internal rate of return (IRR)

Amortization

HP-48S

HP-67

Accumulated Interest (ACC INT)

Balance (BAL)

Depreciation

HP-48S

HP-67

Straight line (SL)

Sum of the years digits (SOYD)

Declining balance (DB)

Bonds and calendar functions

HP-48S

HP-67

Bond price

Bond yield

Date arithmetic / calendar functions

Yes

Memory and Programming

HP-48S

HP-67

Programming language(s)

RPL

RPN

RAM / Max # of variables or addressable registers

32K Bytes

26 Registers

Max # of program steps

Unlim

224

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

Yes

Overlapped register and program memory

Continuous memory

Yes

Flags

128

Conditional tests

Many

Subroutine levels

Unlim

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

Yes

Indexed looping (choice of increment and end)

Yes

Multiple index / loop registers

Yes

Line number addressing

Branching by relative line number

Yes

Global program label addressing

Yes

Local program label addressing

Yes

Indirect / computed addressing and control

Yes

Multiple indirection registers

Yes

Pause

Yes

Alpha messages and prompts in programs

Yes

Alpha program listings

Option

Alpha string manipulation

Yes

Program step insert / delete

Yes

I/O and Expansion Features

HP-48S

HP-67

ROM modules

RAM modules or expansion option

General expansion slots / connector

Magnetic card reader/writer

Yes

Tape drive

Disk drive

Option

Upgradeable firmware

Optical wand

Serial port

Yes

Infrared input

Yes

Infrared output

Yes

Printer

Option

Networking

Other

General

HP-48S

HP-67

Sounds

Yes

Self test

Yes

Hard case (in addition to soft case)

Additional Features

Batteries

3 AAA

Rechargeable

Length (inches)

7.1"

6.0"

Width

3.2"

Height

1.1"

1.4"

Weight (oz or lbs)

8oz

11 oz

Year of introduction

1991

1976

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-48S notes:

Fractions were input as algebraic objects like '4 + 7/8' and output using the →Q function.
To start the continuous self test with the calculator turned on, press and hold ON and press E. This will continuously test internal ROM and RAM and generate patterns in the display. OK-48 will be shown on each pass if all is well. To exit, press and hold ON and press C.
To start the keyboard test with the calculator turned on, press and hold ON and press D. Press E. KBD1 will appear in the display. Starting with the upper left key (A), press each key moving right to left and then down until you get to the + key. KBD1 OK will then be displayed. The calculator will beep between each keystroke. If the calculator displays a hex number, either there is a keyboard problem or you pressed the key in the wrong order. To exit, press and hold ON and press C.
To start the IR loop back test with the calculator turned on, press and hold ON and press D. Press D. Press EVAL. The calculator should display IRLB OK. To exit, press and hold ON and press C.
To start the serial UART loop back test with the calculator turned on, press and hold ON and press D. carefully connect pins 2 and 3 (send and receive) of the serial port. Leave the pins connected during the test. Press PRG. The calculator should display U_LB OK. If the test fails, make sure you shorted the correct pins and no others. To exit, press and hold ON and press C.
To display the CPU speed, with the calculator turned on, press and hold ON and press D. Press A. The CPU speed is displayed in hertz. To exit, press and hold ON and press C.

HP-67 notes:

The HP-97 has a separate features page.

Go back to the feature comparison page
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