View source for HP-10B

{{Short description|Calculator}}
{{Use dmy dates|date=April 2019|cs1-dates=y}}
{{ Infobox Calculator
| name         = HP-10B
| image        = Image:HewlettPackard10B.jpg
| caption      = HP 10B, first version
| type         = [[Financial calculator]]
| entry        = [[Infix notation|Infix]]
| manufacturer = [[Hewlett-Packard]]
| introduced   = 1989
| processor    = [[HP Saturn|Saturn]] [[HP Saturn#Bert|Bert]] (HP-10B); [[Hitachi H8]] (HP-10BII); [[Atmel AT91SAM7L128]] or [[Atmel ATSAM4LC2CA]] (HP-10bII+)
| precision    = 12 display digits (15 digits internally), exponent ±499
| display_type = [[Liquid crystal display|LCD]] [[seven-segment display]]
| display_size = 1 line
| memory_rom   = 10 [[Kilobyte|KB]] of [[Read-only memory|ROM]]; Unknown (HP-10BII); 128 [[kibibyte|KB]] of [[Flash memory]] (HP-10bII+)
| supply       = 3×1.5V button cell batteries (Panasonic LR44, Duracell PX76A/675A or Energizer 357/303) (HP-10BII); 2xCR2032 coin cell batteries (HP-10BII and HP-10bII+)
| weight       = {{convert|4.2|oz|g|abbr=on}}
| dimensions   = 148×80×15mm
}}

The '''HP-10B''' (F1636A) is a student [[Financial calculator|business calculator]] introduced in 1987<!-- or 1989-01? -->. The model of this calculator proved to compete well with the higher end [[Reverse Polish Notation|RPN]] [[HP-12C]].

Two versions of the 10B were produced, the first version came with orange lettering around the keys and used an 1LU7 [[HP Saturn]] processor, the later model (in 2000) with teal-green labels.<ref>{{cite web|url=http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv004.cgi?read=6738|title=Teal-Green HP-10B availability|website=Hpmuseum.org|accessdate=22 September 2018}}</ref> The functionality of the two versions appears to be identical.

The successor '''HP&nbsp;10BII''' (F1902A), which was introduced in 2001, has both cosmetic and architectural changes from its predecessor. It uses a different CPU based on the [[Hitachi H8]]<ref>{{Cite web |title=HP 10bII Financial Calculator |url=https://studylib.net/doc/8791247/hp-10bii-financial-calculator |access-date=2023-11-15 |website=studylib.net |language=en}}</ref> architecture. The calculator's firmware is not a perfect replica of the overall HP10B functionality. For instance, the keyboard layout is different, with two separate shift keys, and the available numbered-storage registers is reduced from 15 to 10. Early production runs were of poor quality; newer calculators have apparently solved this shortcoming.

The 10BII was released in two cosmetic variants. The first in 2001, branded as "10BII", had a golden bezel and mauve statistical shift button and key labels. The second in 2007, branded as "10bII", had a silver bezel and blue statistical shift button and key labels. As with the cosmetic variants of the original 10B, these two variants also appear to have identical functionality.

In 2011, the 10bII was replaced by the '''HP&nbsp;10bII+''' (NW239AA) model 1 (codenamed "Bluestar"<ref>{{cite web|url=http://www.hpmuseum.org/forum/thread-10744.html|title=HP Forums / HP Calculators (and very old HP Computers) / General Forum v / HP 30b codename(s)?|website=Hpmuseum.org|accessdate=22 September 2018}}</ref>) with expanded capabilities. This model offers two modes of input logic, [[chain input]] which evaluates operators strictly in the order in which they are entered, and algebraic input which observes [[PEMDAS]] operator precedence. Chain input is backwards compatible with the previous models of the series. It added new financial functions such as bonds, break-even, and deprecation functions. Several additional scientific functions were also added, such as trigonometric and hyperbolic functions, their inverses, and several additional statistical regression models. The 10bII+ uses a flashable [[Atmel AT91SAM7L128]]<!-- not sure which package variant --><!-- Atmel AT91SAM7L128 was announced to be EOL at end of 2013 with LTS up to end of 2014. --><ref>{{cite web|url=http://media.digikey.com/pdf/PCNs/Atmel/RE133101_AT91SAM7Lxx_Obs.pdf|format=PDF|title=End of life notification : EOL Number: RE133101 |website=Media.digikey.com|accessdate=22 September 2018}}</ref><ref>{{cite web|url=http://media.digikey.com/pdf/PCNs/Atmel/RE133101_AT91SAM7Lxxx_Retract.pdf|format=PDF|title=Based on Atmel Management decision, Atmel is retracting the release or EOL RE133101.  Atmel is conducting additional review of the discontinuance notice and will reissue notice upon completion of the review. |website=Media.digikey.com|accessdate=22 September 2018}}</ref><ref>{{cite web|url=http://media.digikey.com/pdf/PCNs/Atmel/SE133406A_Obs.pdf|format=PDF|title=End of life notification : EOL Number: SE133406A|website=Media.digikey.com|accessdate=22 September 2018}}</ref><ref>{{cite web|url=http://media.digikey.com/pdf/PCNs/Atmel/RE150402.pdf|format=PDF|title=End of life notification : EOL Number: RE150402 |website=Media.digikey.com|accessdate=22 September 2018}}</ref><ref>{{cite web|url=http://www.brouhaha.com/~eric/hpcalc/voyager/variants.html|title=HP Voyager Calculator Variants|website=Brouhaha.com|accessdate=22 September 2018}}</ref> processor with [[ARM7TDMI]] core.<ref>{{cite web|url=http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv020.cgi?read=183953|title=Too Long With No New Calculators!|website=Hpmuseum.org|accessdate=22 September 2018}}</ref>

In 2015, the internal hardware of the HP&nbsp;10bII+ changed to use an [[Atmel ATSAM4LC2CA]] processor with [[ARM Cortex-M4]] core.<ref name="SAM4L"/> The part number and physical appearance of model 2 didn't change except for a "Rev 2" plate on the bottom side.<ref name="SAM4L"/> The serial numbers of the new model start with "PHA".<ref name="SAM4L"/> The 2×3-pin flash port now uses the USB protocol instead of a TTL serial protocol.<ref name="SAM4L">{{cite web|url=http://www.hpmuseum.org/forum/thread-5171-post-46001.html|title=Is the 12C SDK still available?|website=Hpmuseum.org|accessdate=22 September 2018}}</ref>

None of the five models supports [[Reverse Polish Notation|RPN]].

==See also==
* [[List of Hewlett-Packard products#Pocket calculators|List of Hewlett-Packard products: Pocket calculators]]
* [[HP calculators]]

==References==
{{Reflist}}

==External links==
*[http://mycalcdb.free.fr/main.php?l=0&id=840 HP-10B] and [http://mycalcdb.free.fr/main.php?l=0&id=873 HP-10BII] pictures on [http://mycalcdb.free.fr MyCalcDB] (database about 1970s and 1980s pocket calculators)

{{HP calculators}}

[[Category:HP calculators|10B]]
[[Category:HP Pioneer series calculators|10B]]