hp92a

Model:	-92A

General:
	Name:			Investor
	Code-Name:		Bobcat
	Family:			Topcat
	Logic:			RPN
	Features:		business
	Firsts:			TVM5, bond, depreciation, IRR, calendar
				selection
	Introduction:
		Date:		1977-7-1
		Price:		$625
	Discontinuation:
		Date:		1980-11-01
		Price:		$495 (price change 1980-10-01)
	Production-Run:		?

Display:
	Type:			LED, 7 segment
	Size:			1 line x 15 chars
	Number-Formats:		sign, 10 mantissa, ., exp sign, 2 exp
	Annunciators:		red light for low battery

Data:
	User-Visible:
		Smallest:	1E-99
		Largest:	9.999999999E99
		Signif.-Digits:	10
	Internal:
		Smallest:	1E-99
		Largest:	9.999999999E99
		Signif.-Digits:	10
	Data-Types-and-Sizes:	real, 7 bytes

Memory:
	Named-Registers:	X, Y, Z, T, Last x, 0-9, .0-.9, \GS0-\GS9,
	shared--
		n	i	PV	FV	PMT	P1	P2	-
		LIFE	FACT	BOOK	SAL	-	N1	N2	-
		(AUX)	YIELD	PRICE	CPN	ST	MT	IS	CALL
	Flags:			none
	Register-Usage:		R\GS0	\GSn
				R\GS1	\GSx
				R\GS2	\GSx^2
				R\GS3	\GSy
				R\GS4	\GSy^2
				R\GS5	\GSxy
	Numbered-Registers:	30
	Program-Steps:		none
	Program-Editing:	none
	Program-Display:	none
	User-RAM-Bytes:		301
	Total-RAM-Bytes:	?
	ROM-Bytes:		?
	Machine-State:		prefix key state
				stack lift enable
				display mode
				registers
	File-Types:		none

Physical:
	Technology-Used:	?
	Processor:		?
	Chip-Count:		?
	Power-Source:		custom battery pack, A/C
	Continuous-Memory:	no
	Expansion-Ports:	none
	I/O-Ports:		thermal printer, 17 columns?
	Clock:			none

	Length:			?
	Width:			?
	Height:			?
	Weight:			?
	Temperature-Range:
		Operating:	0 to 45 deg C
		Charging:	15 to 40 deg C
		Storage:	-40 to 55 deg C

Keyboard:
	Switches:		OFF / ON
				360 / 365
				MAN / ALL / NORM
				BEGIN / END \ one
				NOTE / BOND / switch
	Shift-Keys:		f, yellow, below left
				g, blue, below right
	User-Defined-Keys:	none

Key-Arrangement::

              ** ** ** *****

              ***** ** ** **

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

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

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

Key-Labels-Base-Keyboard::

					x<>y	Rv	R^	PRINT x
					ENTER^		CHS	%	\:-
n	i	PV	FV		STO	7	8	9	x
PMT	AMORT	PRICE	YIELD		RCL	4	5	6	-
CL FIN	SL	SOYD	DB		CLx	1	2	3	+
f	g	y^	%\GS		0		.	\GS+	+

Key-Labels-f-yellow-below-left::

					LIST:STACK------REG-----\GS-----FINANCE
									 x
					LAST x		EEX	\GD%	y
12x	12\:-	NPV	IRR		CL REG	[]	[]	[]	\v/x
									 x
1/x	P1	IS.ST	CALL		CL \GS	[]	[]	[]	e
[]	LIFE	BOOK	SAL		CLEAR	[]	[]	[]	[]
[]	[]	L.R.	x-		DATE+DAYS	\GDDAYS	\GS-	LN

Key-Labels-g-blue-below-right::

					[]	[]	[]	[]
					[]		[]	[]	[]
[]	[]	[]	[]		[]	[]	[]	[]	[]
RND	P2	MT	CPN		[]	[]	[]	[]	[]
[]	N1	N2	FACT		[]	[]	[]	[]	[]
[]	[]	r	s		[]		[]	[]	[]

Programmable-Operations::

none

Non-Programmable-Operations::

%		percent of
%\GS		percent of total
+		addition
-		subtraction
g .		SCI mode
0-9, .		enter digit or decimal point
g 0-9		FIX decimal mode
1/x		reciprocal
12x		store 12 x X as n
12\:-		store X \:- 12 as i
AMORT		compute amortization
BOOK		stores book value (used in depreciation)
CALL		store the call price (used in bonds)
CHS		change sign
CL FIN		clear the financial registers
CL REG		clear the registers
CL \GS		clear the statistics registers
CLEAR		clear the calculator
CLx		clear X
CPN		store the coupon amount (used in bonds)
DATE+DAYS	compute new date
DB		compute declining balance depreciation
EEX		start an exponent, 1 not required
ENTER^		enter
e^x		natural exponentiation
f		shift
FACT		store the declining balance factor (used in depreciation)
FV		store / compute future value
g		shift
i		store / compute periodic interest
IRR		compute internal rate of return
IS.ST		store the issue and settlement dates (used in bonds)
L.R.		compute linear regression
LAST x		LAST X
LIFE		store the depreciation life
LIST:FINANCE	print the financial registers
LIST:REG	print the registers
LIST:STACK	print the stack
LIST:\GS	print the statistics registers
LN		natural logarithm
MT		store the maturity date (used in bonds)
n		store / compute the number of periods
N1		store the starting year (used in depreciation)
N2		store the ending year (used in depreciation)
NPV		compute the net present value
P1		store the beginning period for the amortization schedule
P2		store the ending period for the amortization schedule
PMT		store / compute the payment amount
PRICE		compute the bond price
PRINT x		print the X register
PV		store / compute the present value
r		compute the correlation coefficient
RCL 0-9,.0-.9,\GS0-\GS9	recall from register
RND		round to match display
Rv		roll the stack down
R^		roll the stack up
s		compute standard deviation
SAL		store the salvage value (used in depreciation)
SL		calculate straight line depreciation
SOYD		calculate sum of year digits depreciation
STO 0-9,.0-.9,\GS0-\GS9	store in register
x		multiplication
x-		compute average
x<>y		exchange x and y
x^2		square
YIELD		store / compute the bond yield
y^		linear estimate
y^x		power
\:-		division
\GD%		percent change
\GDDAYS		compute the number of days
\GS+		add to statistics
\GS-		subtract from statistics
\v/x		square root

Menus::

none

Bugs/ROM-Versions::

none

Notes::

Seven keystroke typeahead buffer.