hp14b

Model:	14B

General:
	Name:			Business Calculator
	Code-Name:		Midas
	Family:			Pioneer
	Logic:			algebraic, no precedence
	Features:		business
	Firsts:			"vertical" menus, COMPUTE key
	Introduction:
		Date:		1988-10-31
		Price:		$79.95
	Discontinuation:
		Date:		<1993
		Price:		$79.95
	Production-Run:		?

Display:
	Type:			LCD, alphanumeric w/bit-mapped characters
	Size:			1 line x 12 chars
	Number-Formats:		sign, 10 mantissa, ., exp sign, 2 exp
	Annunciators:		v	down arrow active
				^	up arrow active
				---^	shift key pressed
				BEGIN	begin mode
				INPUT	used input to store data
				V	soft key active
				<---	more characters to the left
				V	soft key active
				V	soft key active
				!	attention
				V	soft key active
				battery	battery low
				V	soft key active
				V	soft key active

Data:
	User-Visible:
		Smallest:	1E-499
		Largest:	9.99999999999E499
		Signif.-Digits:	12
	Internal:
		Smallest:	1E-49999
		Largest:	9.99999999999999E49999
		Signif.-Digits:	15
	Data-Types-and-Sizes:	real, 8 bytes

Memory:
	Named-Registers:	2 line history, line 2 is LAST, N, I/YR,
				PV, PMT, FV, 0-3, C0-C21, N1-N21,
				shared--	CST	PRC	MAR
						OLD	NEW	%CHG
						TOTAL	PART	%TOTAL
						NOM%	EFF%	P
	Flags:			none
	Register-Usage:		C0-C21 and N1-N21 are shared with statistics
	Numbered-Registers:	4
	Program-Steps:		none
	Program-Editing:	none
	Program-Display:	none
	User-RAM-Bytes:		456
	Total-RAM-Bytes:	512
	ROM-Bytes:		16K
	Machine-State:		prefix key state
				pending operations (9 levels)
				display contrast
				display mode
				radix mark
				registers and history
				begin/end
				21 cash flow groups, 999 entries each
	File-Types:		none

Physical:
	Technology-Used:	CMOS
	Processor:		?
	Chip-Count:		?
	Power-Source:		3 alkaline (Panasonic LR44) or mercury
				(Panasonic NR44 or MR44) button cells
	Continuous-Memory:	yes
	Expansion-Ports:	none
	I/O-Ports:		none
	Clock:			none

	Length:			?
	Width:			?
	Height:			?
	Weight:			?
	Temperature-Range:
		Operating:	0 to 45 deg C
		Charging:	-
		Storage:	-20 to 65 deg C

Keyboard:
	Switches:		none
	Shift-Keys:		gold, gold, above
	User-Defined-Keys:	none

Key-Arrangement::

** ** ** ** ** **
** ** ** ** ** **
***** ** ** ** **
*  ** ** ** ** **
*  ** ** ** ** **
*  ** ** ** ** **
*  ** ** ** ** **

Key-Labels-Base-Keyboard::

N	I/YR	PV	PMT	FV	\GS+
STO	RCL	CST	PRC	MAR	STAT
INPUT	+/-	(	)	<-
%	7	8	9	\:-
v	4	5	6	x
[]	1	2	3	-
C	0	.	=	+

(The C key has a lower label of ON.)

Key-Labels-gold-gold-above::

xP/YR	[]	RND	P/YR	AMORT	\GS-
NPV	IRR%	OLD-----NEW-----%CHG	FRCST
COMPUTE	E	SWAP	DISP	CLEAR
MATH	NOM%----EFF%----P	1/x
				 x
^	TOTAL---PART----%TOTAL	y
[]	ROI%	B.EVEN	INVEN	\v/x
				 2
OFF	BEG/ENG	SHOW	LAST	x

Programmable-Operations::

none

Non-Programmable-Operations::

shift []	clear shift
%		percent of
%CHG		store / compute percent change
%TOTAL		store / compute percent of total
(		start nesting
)		end nesting
+		addition
+/-		change sign
-		subtraction
0-9, .		enter digit or decimal point
1/x		reciprocal
<-		erase character or number; cancel one level of menus
=		complete the operation
AMORT		calculates amortization schedule
B.EVEN		breakeven analysis
C		clear calculator line
C + +		adjust display contrast
C + -		adjust display contrast
C + FV		factory test, stop by any key
C + N + \GS+	clear continuous memory
C + PMT		initiate one self-test
C + PV		reset calculator
CLEAR		bring up the CLEAR menu
COMPUTE		computes IRR%, NPV or one of the values in the applications
		(ROI, B.EVEN, or INVEN)
CST		store / compute cost
DISP		bring up the DISP menu
E		start an exponent
EFF%		store / compute effective rate
FRCST		bring up the FRCST menu
FV		store / compute future value
I/YR		store / compute annual interest
INPUT		use number in line 1 as response
INVEN		do inventory analysis
IRR%		enter cash flow list and compute IRR
LAST		use number in history line 2
MAR		store / compute margin
MATH		brings up the MATH menu
N		store / compute N
NEW		store / compute new amount
NOM%		store / compute nominal percent
NPV		enter cash flow list and compute NPV
OFF		off
OLD		store / compute old amount
ON		on
P		store periods per year
P/YR		store number of payments per year
PART		store / compute part of total
PMT		store / compute payment
PRC		store / compute price
PV		store / compute present value
RCL 0-3		recall from register
RCL name	recall from register
RND		round number to display
ROI%		allow you to do return on investment analysis
SHOW		show full precision
STAT		bring up the STAT menu
STO +,-,x,\:- 0-3	storage arithmetic  
STO 0-3		store in register
STO name	store in menu variable
SWAP		swap displayed number with previous number
TOTAL		store / compute total amount
v		move to next item
x		multiplication
xP/YR		multiply by P/YR and store in N
x^2		square
y^x		power
\:-		division
\GS+		add to statistics
\GS-		subtract from statistics
\v/x		square root
^		move to previous item

Menus::

BEG/END:BEGIN	END

CLEAR:	TVM	RG	ALL	\GS

DISP:	FIX	ALL	.	,
	FIX	0-9, .0, .1

FRCST:	x^	y^

	 x
MATH:	e	LN	n!

STAT:	\GS	x-,y-	S	FIT
	\GS:	n	x	y	x^2	y^2	xy
	x-,y-:	x-	y-	x-w
	s:	sx	sy
	FIT:	B	L	EX	LOG	P
	FIT:	x^	y^	r	m	b

Bugs/ROM-Versions::

none

Notes::

The applications are "vertical" menus.  Each of the variables is
named, and you can use the ^ and v keys to move among the variables
and set/review them in any order.  You can solve for any variable by
moving to it and pressing COMPUTE.

ROI application
	REV	revenue
	PROF%	profit percentage
	INVS	investment
	ROI%	return on investment

B.EVEN application
	#SLD	number sold
	PRC	price
	FIXC	fixed costs
	VARC	variable costs
	PROF	profit percent

INVEN application
	BEGI	beginning inventory
	ENDI	ending inventory
	SOLD	cost of goods sold

IRR and NPV calculations work by pressing the key, entering/editing
the list of cash flows, and pressing COMPUTE.

Statistics computes summaries each possible way (linear, log, exp,
power).  Thus, you can do different curve fitting, yet are not doing
list-based statistics.  This technique was first used in the -71B.

There was a "50th Anniversary" version made of this machine and the
32S.  (The anniversary was of HP.)  The changes consisted of a
modified bezel with insert and an extra logo imprinted on the case.
The 14B version was oversubscribed (i.e., more people wanted one than
were avaiable) and the 32S version had extras (there were some that no
one wanted (then!)).

The following may work: You can use INPUT and SWAP to keep two
complete calculations going at once.  Do the first one, press INPUT,
then do your second one.  Do SWAP to switch back and forth.  Make sure
that you have completed any pending operations first.  Pressing C or
turning the calculator off and on clears both.