hp30s

Model:	30S

General:
	Name:			Scientific Calculator
	Code-Name:		Astro
	Family:			?
	Logic:			expression
	Features:		scientific, hyperbolic, fractions
	Firsts:			swappable keyboard colors
	Introduction:
		Date:		1999-04-01 (also reported as 2000-04-13)
		Price:		$14.95
	Discontinuation:
		Date:		?
		Price:		$15.99 as of 2003-01-31
	Production-Run:		?

Display:
	Type:			LCD
	Size:			top line 7x5 dot matrix
				bottom line 7 segment
	Number-Formats:		sign,  10 mantissa
				sign, 7 mantissa, ., exp sign, 2 exp
				?digits _ digits _| digits (fractions)
				?digits .o digits ' digits " (D.MS)
	Annunciators:		2nd	2nd key pressed
				MODE	mode selection active
				STAT	statistics mode active
				ENG	engineering notation
				SCI	scientific notation
				DEG	degrees mode
				RAD	radians mode
				GRAD	grads mode
				FIX	fixed decimal mode
				HYP	HYP key pressed
				LSOLV	linear equation solver active
				QSOLV	quadratic equation solver active
				<- ->	digits to the left or right of display
				^ v	earlier or later results
				M	non-zero number in memory
				-	result is negative, or entry line full
				K	a constant expression can be
					defined or used
				x10	result is displayed in engineering
					or scientific notation; exponent
					displayed above indicator
				,	thousands separator

Data:
	User-Visible:
		Smallest:	1E-99
		Largest:	9.999999999E99
		Signif.-Digits:	10
	Internal:
		Smallest:	1E-99
		Largest:	9.99999999999E99
		Signif.-Digits:	12
	Data-Types-and-Sizes:	real, 8 bytes

Memory:
	Named-Registers:	A, B, C, D, EQN, X, Y, X1, X2, Y1, Y2
	Flags:			none
	Register-Usage:		none
	Numbered-Registers:	none
	Program-Steps:		none
	Program-Editing:	none
	Program-Display:	none
	User-RAM-Bytes:		80
	Total-RAM-Bytes:	?
	ROM-Bytes:		?
	Machine-State:		memory,
				deg/rad/grad
				display mode
				regular, statistics, linear eq, quadratic eq
	File-Types:		none

Physical:
	Technology-Used:	?
	Processor:		?
	Chip-Count:		?
	Power-Source:		2, LR-44 cells
	Continuous-Memory:	yes
	Expansion-Ports:	none
	I/O-Ports:		none
	Clock:			none (auto power off, though)

	Length:			155mm
	Width:			81mm
	Height:			13.8mm
	Weight:			135g
	Temperature-Range:
		Operating:	? to 4? deg C
		Charging:	? to ? deg C
		Storage:	? to ? deg C

Keyboard:
	Switches:		none
	Shift-Keys:		MODE, purple, above left
				2nd, yellow, mid left
	User-Defined-Keys:	none

Key-Arrangement::

***        ***

***        ***

** ** ** ** **

** ** ** ** **

** ** ** ** **

** ** ** ** **

** ** ** ** **

** ** ** ** **

*** *** *** **

Key-Labels-Base-Keyboard::

MODE		^		ON (red key)
2nd	<		>	CONST
		v
DATA	STATVAR	DRG	a b/c	DEL
VRCL	log	ln	PRB	CONV
STO	sin	cos	tan	CL
\v/	x^2	(	)	\:-
+/-	7	8	9	x
E	4	5	6	-
MRC	1	2	3	+
M+	0	.	\pi	ENTER

Key-Labels-2nd-yellow-above::

[]				OFF
[]				[]
DMS	R<>P	SCI/ENG	a b/c<> d/c	INS
CL-VAR	10^x	e^x	F<>D	FIX
RCL	sin-1	cos-1	tan-1	CL-EQN
x\v/	x^-1	>Y	>X	,
hyp	[]	[]	[]	%CHG
y^x	[]	[]	[]	%
K	[]	[]	[]	ANS
M-	RESET	RND	[]	=

Programmable-Operations::

none

Non-Programmable-Operations::

%		percent of
%CHG		enter "%CHG()"
(		start nesting
)		end nesting
+		addition
+/-		change sign
-		subtraction
,		separate arguments
0-9, .		enter digit or decimal point
10^x		enters "10^()"
2nd		prefix
=		enter an = sign
>X		enter X
>Y		enter Y
a b/c		fraction entry: 4 2/3 is entered 4 AB/C 2 AB/C 3
a b/c<>d/c	convert between proper and improper fraction
ANS		recall last answer into entry line
CL		clears entry line, error message, or menu
CL-EQN		clears EQN
CL-VAR		clears all variables except EQN
CONST		enter constant
CONV		unit conversion, enter value, CONV, selected from unit,
		ENTER, select to unit and view conversion, then ENTER
cos		enters "cos()"
cos-1		enters "cos-1()"
DATA		enter statistics data
DEL		delete character
DMS		DMS conversion
DRG		menu
E		start an exponent
e^x		enters "e^x()"
ENTER		complete expression and evaluate
F<>D		convert between fraction and decimal display
FIX		sets fixed display mode (choose among "F0123456789")
hyp		prefix for hyperbolic functions
INS		toggles insert mode
K		starts defining a sequence of operators and constants that
		are added to the expression each time the ENTER key is pressed
ln		enters "ln()"
log		enters "log()"
M+		add X to memory
M-		subtrack X from memory
MODE		cycles among modes
MRC		recall extra memory; pressing it twice clears memory
OFF		off
ON		turns calculator on
PRB		menu
R<>P		menu
RCL		recalls value of variable
RESET		resets all settings to factory default
RND		rounds number to match display
SCI/ENG		menu
sin		enters "sin()"
sin-1		enters "sin-1()"
STATVAR		analyze statistics
STO		stores X into variable (EQN can hold expressions with the
		variables A, B, C, or D)
tan		enters "tan()"
tan-1		enters "tan-1()"
VRCL		recalls name of variable
x		multiplication
x\v/		enters "x\v/()"
x^-1		enters "-1" as a power
x^2		enters "2" as a power
y^x		power
\:-		division
\pi		PI
\v/		enters "\v/()"

Statistics

	MODE
	1
	select: 1-VAR	2-VAR	CLR-DATA
	DATA
	*enter x
	press v (down arrow)
	enter frequency (1-VAR) or y (2-VAR)
	press v (down arrow)
	repeat from * until done

to analyze, press

	STATVAR
	press > (right arrow) to scroll through results
	press ENTER to use a result

	in 2-VAR, to predict a value for X or Y,
		select X' or Y'
		ENTER
		enter value
		ENTER

	n	number of valuse
	x-,y-	mean of x or y
	Sx,Sy	sample standard deviation
	\Gsx,\Gsy	population standard deviation
	\GSx,\GSy	sum of all values
	\GSx^2,\GSy^2	sum of squares of all values
	\GSxy		sum of products of data
	a		linear regression y intercept
	b		linear regression slope
	r		correlaion coefficient
	x'		predicted x
	y'		predicted y

Linear Solver

	MODE
	2
	enter first equation, using >X and >Y for X and Y using either
		form: ax+by=c or y=mx+b (presumably storing m in A)
	,
	enter the second equation
	ENTER
	view X
	>
	view Y

	results are also stored in X and Y

Quadratic Solver

	MODE
	3
	enter the equation as Ax^2 + Bx + C = 0 or Ay^2 + By + C = 0
	ENTER
	view first root
	>
	view second root

	roots are also stored in X1/Y1 and X2/Y2

Special Keys

M+ and CONST together: force on, may also force reset

RESET, then hold down 2nd, +/-, and DEL: does self-test
	1)D	display, end with DRG
	2)K	keyboard, end with ???

Menus::

CONST:	c	g	G	Vm	Na	e	mfe	mp...
	mn	R	h	k

	c	speed of light
	g	accelleration of gravity
	G	gravitational constant
	Vm	molar volume of ideal gas
	Na	Avogadro's number
	e	elementary charge
	me	eletron mass
	mp	proton mass
	mn	neutron mass
	R	molar gas constant
	h	Plank's constant
	k	Boltzmann's constant

CONV:	inch	cm	mm	mil
	feet	m	yard	mile	km
	feet^2	m^2	yard^2	mile^2	km^2	acres	hectares
	lb	kg
	Tr.oz	oz	Pound	g
	degF	degC
	gallon	liter	B.gal	Pint	fl.oz
	Cal	kJ
	atm	kPa	mmHg	cmH2O

DMS:	deg	'	"	r	g	>DMS

DRG:	DEG	RAD	GRAD

MODE:	0)HOME	1)STAT	2)L SOLV	3)Q SOLV
	0 home
	1 statistics
	2 linear equations
	3 quadratic equations

PRB:	nPr	nCr	!	RANDM	RANDMI

R<>P:	R>Pr	R>P\Gt	P>Rx	P>Ry

RCL:	A	B	C	D	X1	X2	X	Y...
	Y1	Y2

SCI/ENG:FLO	SCI	ENG

STO:	A	B	C	D	X1	X2	X	Y...
	Y1	Y2	EQN

VRCL:	A	B	C	D	X1	X2	X	Y...
	Y1	Y2	EQN

Bugs/ROM-Versions::

Square root is only accurate to 12 digits.  To fix, compute the average
of square root(x) and x/square root(x).

Internal calculations use 24 digits.

Reported by Ralf Fritzsch (Fritzsch@Hamburg.BAW.DE) of Hamburg, Germany,

	Key in 1 [a b/c] 110 to put in 1/110 as a fraction via the [a
	b/c] key.  The result is: 0/1.

Notes::

Introduced at the National Council of Teachers of Mathematics.

It competes directly with Casio fx-83 and fx-85.

Comes with three key overlays (gray, translucent blue, solid purple).
There are five others available as an option (solid blue, translucent
red, trsnslucent blue, translucent green, and transclucent
purple).  Australian kids picked the colors (and names).

The HP F1908A is apparently only available in Australia.

Has a sliding hard cover like the 38G.

Half the keys bring up menus, which allows for a lot of functions in a
small package.  However, some of the menus set modes, some pick
variables, and some just list operations.  Tracking which are which
can give one a headache.

Manufactured by Kinpo (http://www.kinpo.com.tw).  It is a modified SR18.

From a private e-mail:

		...
	Also, I strongly believe the HP30S is made by Kinpo. When I
	open it up, I find "SR18" inside on the PCB and case
	halves. But, there is no SR18 on the Kinpo web site, and
	nothing that looks like it on the Citizen web site.

	However, I recently purchased a Datexx DS-834 scientific
	calculator.

		http://my.datexx.com/consumer/productinfo.html?p=DS-834

	It appears to be a Citizen/Kinpo SR-19S1 ("SR-19S1" is etched
	on the PCB):

		http://www.kinpo.com.tw/English/Calculator.htm#sr19s1

	Besides the general feel and appearance, what really convinces
	me that the HP30S is made by Kinpo is that the self test for
	the Datexx DS-834 is almost identical to the HP-30S. The only
	difference is that a third option is added that loops through
	a display contrast test. Here is my HP30S self-test
	documentation:

		http://www.rskey.org/~mwsebastian/selftest/hp_test.htm#hp30s

	Compare it to the Datexx DS-834 self-test:

		http://www.rskey.org/~mwsebastian/selftest/datexx_test.htm#ds834
		...