hp71b

Model:	-71B

General:
	Name:			none
	Code-Name:		Titan
	Family:			none
	Logic:			Basic
	Features:		basic, clock, appointments
	Firsts:			Saturn machine, IEEE math
	Introduction:
		Date:		1984-2-1
		Price:		$525
	Discontinuation:
		Date:		1988-11
		Price:		$625
	Production-Run:		?

Display:
	Type:			LCD, bitmap
	Size:			1 line x 22 chars, 8 x 132 pixels
	Number-Formats:		-
	Annunciators:		<--	line extends to the left
				g	g-shift active
				f	f-shift active
				AC	reserved for future use
				BAT	low battery
				USER	user keyboard is active
				RAD	radians mode
				0	flag 0 set
				1	flag 1 set
				2	flag 2 set
				3	flag 3 set
				4	flag 4 set
				((.))	reserved for future use
				-->	line extends to the right
				PRGM	a program is running
				SUSP	a program is suspended
				CALC	calc mode active
		arrangement is
			<--gf				0 ((.)) -->
			ACBAT				1 PRGM
			 USER				2 SUSP
			 RAD				3 CALC
							4

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:	long real (as above) [9.5 bytes]
				short +/-9.9999E499 to +/-1E-499 [9.5 bytes]
				integer +/-99999 [9.5 bytes]
				numeric array (1,2 dimensions) [9.5 bytes +
					long	8 bytes/element
					short	4.5 bytes/element
					integer	3 bytes/element]
				string [11.5 bytes + dimensioned length]
				string array (1 dimension) [9.5 bytes +
					2 bytes/element + dimensioned memory]

Memory:
	Named-Registers:	-
	Flags:			-
	Register-Usage:		-
	Numbered-Registers:	-
	Program-Steps:		-
	Program-Editing:	-
	Program-Display:	alpha
	User-RAM-Bytes:		17.5K
	Total-RAM-Bytes:	33.5K (max by HP), really 512K
	ROM-Bytes:		64K
	Machine-State:		-
	File-Types:		internal: not described
				external: see LIF

Physical:
	Technology-Used:	CMOS
	Processor:		Saturn, 4-bit, 640 KHz 1LK7 5 V CMOSC
	Chip-Count:		?
	Power-Source:		4 1.5V AAA cells, A/C adaptor
	Continuous-Memory:	yes
	Expansion-Ports:	6 ports are available (all wired the same)
					4 in front
					1 shaped for HPIL
					1 shaped for card reader
	I/O-Ports:		none
	Clock:			yes

	Length:			19 cm
	Width:			9.7 cm
	Height:			2.5 cm
	Weight:			340 g
	Temperature-Range:
		Operating:	0 to 45 deg C
		Charging:	-
		Storage:	-40 to 55 deg C

Keyboard:
	Switches:		none
	Shift-Keys:		f, yellow, above
				g, blue, below
	User-Defined-Keys:	all

Key-Arrangement::

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

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

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

Key-Labels-Base-Keyboard::

Q     W     E     R     T     Y     U     I     O     P    7    8    9    /
A     S     D     F     G     H     J     K     L     =    4    5    6    *
Z     X     C     V     B     N     M     (     )     END  1    2    3    -
ON    f     g     RUN   <|    |>    SPC   ^     v     LINE 0    .    ,    +

Key-Labels-F-Gold-Above::

IF    THEN  ELSE  FOR   TO    NEXT  DEF   KEY   ADD   LR   PREDV MEAN SDEV SQR
CALL  GOSUB RETURN GOTO INPUT PRINT DISP  DIM   BEEP  FACT SIN  COS  TAN  EXP
EDIT  CAT   NAME  PURGE FETCH LIST  DELETE AUTO COPY  RES  ASIN ACOS ATAN LOG
OFF   []    []    SST   BACK  -CHAR I/R   LC   -LINE  []   USER VIEW CALC CONT

Key-Labels-G-Blue-Below::

q     w     e     r     t     y     u     i     o     p    '    {    }    ^
a     s     d     f     g     h     j     k     l     ;    $    %    &    :
Z     X     C     V     B     N     M     [     ]     CMDS !    "    #    @
[]    []    []    CTRL  |<|   |>|   ERRM  -^    v-    []   1 USER <  >    ?

Programmable-Operations::

not listed (maybe in a later version)

Non-Programmable-Operations::

not listed (maybe in a later version)

Menus::

none

Bugs/ROM-Versions::

none

Notes::

The machine is the first (and only?) one to implement full IEEE
arithmetic including all bells and whistles.  The Reference Manual
includes the IEEE spec.

The PEEK$/POKE commands are carefully designed to not let you see or
change private files.

Cards hold 1.3K bytes each.  The same cards -- but not data formats --
are used with the -75*.

Current draw:
	off			 0.03 mA
	on, not running		 0.75 mA
	program running/beeper	10 mA

This and the -75D are the only machines in the database that had price
INCREASES.