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Calculator Book Addendum
"P–R"

New Calculators for The Collector's Guide to Pocket Calculators

The Collector's Guide to Pocket Calculators lists over 1,500 models of early pocket calculators from over 220 companies.

If you have an early pocket calculator (from the 1970s with LED, vacuum fluorescent, discharge, or early LCD display, and battery powered) which is not in The Collector's Guide, please email the details as in the list below for inclusion here.

Details for each calculator are required in the format used in the book, and below:
Manufacturer or Trading Company, Model Name or Number (there may be more than one), Functions, Display Type, Battery type (and if rechargeable), Size, Country of Manufacture, any Interesting Features.

A small frontal photograph (jpeg format, about 600 pixels max dimension) of each would be useful and will be included with the details if of good quality.
Please email with details.

New Calculators

Latest Update - latest additions have the date added.

Go to   P   Q   R

 

P

Panasonic (Japanese manufacturer)

  • Correction to book - the model listed as "Electric Ruler" should actually be model # 8210, aka JE-8210U or Electronic Ruler.
  • 660 aka JE-660U, listed in book.
  • 801 aka JE-801A, listed in book.
  • 805, listed in book.
  • 830 aka JE-830U, listed in book.
  • 840 aka JE-840U, listed in book.
  • 850 aka JE-850U, listed in book.
  • 855 aka JE-855U, listed in book. Featured calculator.
  • 860 aka JE-860U, listed in book.
  • 880 aka JE-880U, listed in book.
  • 883 aka JE-883U, listed in book.
  • 885 aka JE-885U, listed in book.
  • 1001 aka JE-1001, listed in book.
  • 1403 aka JE1403U, listed in book.
  • 2001 aka JE-2001, listed in book.
  • 2003 aka JE-2003, listed in book.
  • 8203 aka JE-8203U, listed in book.
  • 8204, 4-func, mem, sq rt, square, blue VFD. Photo.
  • JE-170U, 4-func, %, mem, 10-digits green VFD, 2x AA rep batt, 95x165x30mm / 3.75x6.5x1.2", Japan. Photo.
  • JE-1803, listed in book.
  • JE-2002U, listed in book.
  • JE-6220U, 4-function, %, memory, square root, VFD, Japan. Photo.
  • JE-8001U, 4-function, %, green VFD, 2-AA rep. batt., 103x66x22mm / 4.1x2.6x0.9", Japan. Photo.
  • JE-8210U "Electronic Ruler", listed in book. Photo.
  • JE-8220, listed in book.
  • JE-8221, listed in book. Photo.
  • JE-8800, 4-function, %, blue VFD, 4-AA.
  • Panac M-3 aka JE-8203, listed in book.
  • National Panac P-1 aka JE-8801, 4-function, %, 8 digit green fluor, 2-AA rep batt, 78x130x27mm / 3.1x5.1x1.1", Japan. Photo.
  • National Panac S-1 aka JE-5001, listed in book.
  • Panac S-1D aka JE-1401, listed in book.

Peripheral Magnetics (U.S. company)

  • Abatron 800, listed in book.

Philips (Dutch multi-national.)

  • P-8, 4-function, red LED, similar to National Semiconductor/Novus 850.
  • P-84, 4-function, %, mem, red LED, PP3 rep batt, 69x139x25mm/2.7x5.5x1", U.S.A. Photo.

Phytron (British marketing company)

  • 32 (aka Advance 82R), 4-function, %, 2 memories, sq rt, red LED, 5-AA rep batt, 87x181x45mm / 3.4x7.1x1.75", England, ~1973. Photo. Featured British calculator.

Pico

  • PA-80D, listed in book.
  • PN-80N, listed in book.

Pioneer (see Rapid Data)

Plustronics ("Plustronics Ltd., a company of Photopia International Ltd." British photographic and electronic marketing company)

Price Research Associates (PRA) (U.S. company)

  • Wisp, listed in book.

PrintaBowmar (Mexican company)

  • 1530, listed in book.

Prinztronic (Trade name of Dixons, a British photographic and electronics chain store)

Prismatic

  • 500, listed in book.

Privileg (a trade name of the German chain-store Quelle International)

  • 85, listed in book. Photo.
  • 583 DE, listed in book.
  • 583D-E sci funct, 8 digit green fluor, 2-AA rep batt, black color, 3.0x5.75".
  • 585 DE, listed in book.
  • 585 D-E-NC sci funct, 8 digit fluor, sealed batt, black color, 3.0x6.25".
  • 800K, 4-function, amber discharge display, 4-AA batt.
  • 808D "Mini Calculator", 4 function, %, blue VFD, 4-AA batt., Japan. Photo.
  • 812, same as Caltronic 812. Photo, inside.
  • 841M, 4-function, mem, %, sq rt, red LED, 9v rep batt.
  • 848 MD, listed in book.
  • 868MD, 4-function, mem, %, sq rt, 8 digit fluor, 4-AA rep batt, similar to Sanyo case design, 3.25x5.25", Japan. Photo.
  • 872MD 4-function, mem, %, sq funct, paren, recip, sgn chg, 8 digit green fluor, 2-AA rep batt, 3.0x5.0".
  • 880-NC-ESR, scientific, green VFD, 4-AA batt. Photo.
  • 1081ESR-E, listed in book.
  • beginner, 4-function, 6-digit red LED. Photo.
  • Mini Calculator (aka tw305), 4-function, square-root, square, 8-digit red LED. Photo.
  • PC 120, 4-function, counter button, 4-digit green VFD (with "->" key to show 4 more digits), similar to Sharp EL-120 but with a more stylish, more rounded casing).
  • SR 30, listed in book.
  • SR60D-NC, listed in book.
  • Sensor, listed in book.
  • Super 2002, listed in book.
  • Mini Computer, listed in book (believed to be a relabelled Busicom LE-80AS). Photo.

Protronic (no information available about this company, but the operating manual of the Model 212 is in German. If you have any information please get in touch)

  • Model 212, Scientific, green VFD, 2-AA rep. batt., 76x139x20mm/ 3.0x5.5x0.8". Photo.

Pulsar

  • Calculator Watch, listed in book. Photo.

Pye (British company - for more information see the British Calculators section)

 

Q

Quali (Taiwanese company)

  • 112, listed in book.

Qualitron
Qualitron Industrial Corp was a Taiwanese company owned by the Lin family. Mr Stan Shih (who later founded the Acer computer group) played a major part in establishing the company and its calculators in 1972. The company ran into financial problem in the mid-1970s. See http://acer.com/about/biographical.htm and http://www.cbronline.com/news/not_my_style_acers_shih_is_latest_ceo_to_turn_to_print.

  • 614, listed in book.
  • 707, 4-function, %, red LED.
  • 807, 4-function, %, red LED.
  • 907, listed in book.
  • 910 aka "Slimline", listed in book.
  • 1407, 4-function, %.
  • 1437, listed in book. Photo.
  • 1439, listed in book.
  • 1442, listed in book.
  • 1443, listed in book.
  • 1444, 4-function, %, memory, sq rt, green VFD, 4- AA rep batt.
  • 1445, listed in book.
  • 24433R, listed in book.
  • 2446R aka Sliderule, listed in book.
  • 2450, scientific, 8-digits green VFD.  Photo.
  • 2543, listed in book.
  • QI-1014, listed in book. Photo.
  • QI-1064, listed in book.
  • Elegance, listed in book.
  • Executive aka 007, listed in book.

Quelle (see Privileg)

Quik-Check (manufacturer unknown - please get in touch with us if you have more information)

  • Quik-Check, 4-function, red LED, 9v PP3 rep. batt., 57x63x42mm / 1.25x2.5x1.7", Hong Kong, c1978, one of only two known models of wrist-calculator (other is Sinclair Wrist Calculator). Featured calculator. Photo.

Quorum (Farmington, Connecticut, U.S.A.)

  • 32M, 4-function, %, memory, square root, square, green VFD, 2-AA rep. batt., 78x129x25mm / 3.1x5.1x1.0", Japan. Photo.

 

R

R and S

  • 810, listed in book.

Radio Shack (a Tandy Corporation company, Fort Worth, Texas, U.S.A.)

  • EC-21, listed in book.
  • EC-100, listed in book.
  • EC-200, listed in book. Photo, inside.
  • EC-201, listed in book.
  • EC-219, listed in book.
  • EC-220, listed in book. Featured calculator.
  • EC-221, listed in book.
  • EC-223, listed in book.
  • EC-225 (type 1, red LED), listed in book. Photo.
  • EC-225 (type 2, yellow LCD), 4-function, %, memory, square root, yellow LCD, 2- button cells, Taiwan. Photo, rear .
  • EC-226, listed in book.
  • EC-230, listed in book.
  • EC-231, listed in book.
  • EC-240, listed in book.
  • EC-241, listed in book.
  • EC-242, listed in book.
  • EC-243, listed in book.
  • EC-245, listed in book.
  • EC-250, listed in book.
  • EC-275, listed in book.
  • EC-281, listed in book. Photo.
  • EC-300, listed in book.
  • EC-312 "ASTRO", listed in book. Photo, in Astro mode.
  • EC-314, listed in book.
  • EC-350, listed in book.
  • EC-375, listed in book.
  • EC-380, listed in book.
  • EC-400, listed in book.
  • EC-415, listed in book.
  • EC-420, listed in book.
  • EC-421, listed in book.
  • EC-425, listed in book.
  • EC-450, listed in book.
  • EC-475, listed in book.
  • EC-480, listed in book.
  • EC-485, listed in book.
  • EC-490, listed in book. Photo.
  • EC-495, listed in book.
  • EC-2001, listed in book.
  • EC-2010, listed in book.
  • EC-3000, listed in book.
  • EC-3005, listed in book.
  • EC-4000, listed in book.
  • EC-4001, listed in book. Featured calculator.
  • Blackjack (see EC-21), listed in book.
  • Teaching Calculator, listed in book.
  • 4-in-1 Electronic, listed in book.

Radofin (Triton was a registered tradename of Radofin and appears on some calculators. Radofin Electronics Ltd., London, England. The are more details about this company in the British Calculators section.)

  • 8P, listed in book.
  • 870, 4-function, % , memory, red LED.
  • 1000 (aka Triton), red LED, 4 functions, 3-AA rep. batt., 74x150x20mm / 2.9x5.9x0.8", c1974, Malaysia, similar to Litronix 1000 Triton. Photo .
  • 1515, listed in book. Photo.
  • 1525, listed in book.
  • 1610 (aka Valuman), listed in book. Photo. Featured British calculator.
  • 1620, 4-function, % , memory, red LED.
  • 1630, listed in book.
  • 1640, 4-function, %, memory, red LED, 9v PP3 rep. batt., 68x132x23mm / 2.7x5.2x0.9", Hong Kong. Photo. Featured British calculator.
  • 1660, limited scientific, red LED, 9v rep batt, 2.7x5.2", made in Hong Kong, ~1975. Photo. Featured British calculator.
  • 1720, listed in book. Photo.
  • 1750, listed in book.
  • 2200 style 1, listed in book. Photo.
  • 2200 style 2, 4-function, red LED, 9v PP3 rep. batt., 69x135x24mm / 2.7x5.3x0.9", Hong Kong. Photo. Featured British calculator.
  • 2500, 4-function, %, memory, red LED, 4- AA rep. batt., 78x138x37mm / 3.1x5.4x1.5", 1974. Photo.
  • 2560, Scientific, red LED, 4- AA rep. batt., 78x138x37mm / 3.1x5.4x1.5", Hong Kong. Photo. Featured British calculator.
  • SR1630, listed in book.
  • Triton 8, 4-function, red LED, PP3 rep. batt., England, c1974, has membrane keyboard. Featured British calculator.
  • Triton 1200, 4-function, red LED, 76x154x24mm / 3.0x6.0x0.9", PP3 rep. batt., England, c1974, has membrane keyboard. Photo. Featured British calculator.
  • Triton 1400, 4-function, red LED, 67x122x23mm / 2.6x4.8x0.9", PP3 rep. batt., Hong Kong. Photo. Featured British calculator.

Ragen Precision Industries (U.S. company)

  • Micro-Mini, listed in book.

Rambler (If you have any information about the company please get in touch)

  • Rambler, 4-function, individual tubes, Japan,  similar to models manufactured by Teal. Photo.

Ramsgate (Ramsgate Inc., Eveleth, Minnesota, U.S.A.)

Rapid Data (Rapid Data Systems and Equipment Limited, Canada)

  • 800 aka Rapidman 800, listed in book. Featured calculator.
  • 801 aka Rapidman 801, 4-functions, %, red LED, PP3 rep. batt., 88x146x27mm / 3.5x5.75x1.1". Photo.
  • 804 aka Rapidman 804, listed in book.
  • 812 aka Rapidman 812, listed in book.
  • Pioneer 1, listed in book.

Rapidex (European company)

  • 710, listed in book.

RBM (U.S. company)

Realtone (Euro-market company)

  • 8412, listed in book.
  • 9202, 4-function, %, blue VFD.
  • Conversion Master KP-60, 4 function, %, memory, conversion factors, green fluorescent, 3-AA rechargeable batt, 3.5x6.1", Hong Kong. Photo.
  • KP-470, listed in book.
  • SC-60, scientific, red LED.

Regan (Regan Industries, Glendale, Claifornia, U.S.A.)

  • RA900P, listed in book. Photo.

Remington See Sperry-Remington-Rand.

Reno (German company)

  • 952, Scientific, green VFD, 2- AA rep batt, 80x146x37mm / 3.1x5.75x1.4". Photo.

RES (Radiant Energy Systems, Newberry Park, California, U.S.A.)

Revtronic (We have no information about this company. If you can help please get in touch with us.)

  • Revtronic (no model number), 4-function, %, red LED, 70x126x21mm / 2.8x5.0x0.8". Photo.

Rex (Euro-market)

  • 8, 4-function, %, square root, green VFD, 2-AA rep. batt., 81x139x28mm / 3.2x5.5x1.1", Singapore, c1976. Photo.

RFT (Formerly-East German company)

  • konkret 100, listed in book.
  • konkret 200 4-funct, red LED, sealed batt, 3.25x6.5" (8.4x16.5 cm), East Germany. Photo.
  • konkret 400 4-funct, sq rt, recip, red LED, sealed batt, 3.25x6.5" (8.4x16.5 cm), East Germany. Photo.
  • Minirex 75, listed in book. Featured calculator.
  • MR-201, listed in book. Photo, inside.

Ricoh (Japanese company)

  • RC-8C, 4-function, %, green VFD.
  • RC-8F, listed in book. Photo.
  • RC-8L, 4-function, %, memory, sq. rt., green VFD.
  • Ricomac X-10, scientific, red LED, 4- rech. batt., Japan. Photo.

RMS International (U.S. company)

  • Zeta 7, listed in book.

RJP

  • 880, 4-function, %, memory, change sign, red LED, 9v rep batt, 3.0x5.4", Hong Kong. Featured calculator.

Rockwell (U.S. company. See also Anita, Galfa, House of Fraser)

  • 8R, listed in book. Featured calculator.
  • 9TR, listed in book. Featured calculator.
  • 10R, listed in book. Photo.
  • 12R, listed in book.
  • 14RD, listed in book. Photo.
  • 14RD-II, listed in book. Photo.
  • 18R, listed in book. Photo.
  • the 18T, 4-function, %, green fluor, 3-AAA rep batt, 75x137x14mm / 3.0x5.4x0.6", Hong Kong. Photo.
  • 20R, listed in book. Photo.
  • the 20T, 4-function, %, memory, green fluor, 3-AAA rep batt, 75x137x14mm / 3.0x5.4x0.6", Hong Kong. Photo.
  • 21R, listed in book. Photo.
  • the 22K, listed in book. Photo.
  • 22MS, listed in book.
  • 24K, listed in book.
  • the 24K II, listed in book. Photo, inside.
  • 24MS, listed in book.
  • 24MS II, listed in book.
  • 24RD, listed in book.
  • 24RD-II, listed in book. Photo.
  • 30R, listed in book. Photo.
  • 31R, listed in book. Photo.
  • 44RD, listed in book. Photo.
  • 51R "Converter", listed in book.
  • 61R, listed in book. Photo.
  • 63R, listed in book. Photo.
  • 64RD, listed in book.
  • 74K, listed in book.
  • '76, listed in book.
  • 202, listed in book.
  • 203, listed in book.
  • 204, listed in book.

Rodell

  • Model number not known, 4-function, %, red LED, U.S.A., similar to Commodore MM3.

Roger (see Tohotronic)

Royal (Royal Typewriter Company, a division of Litton Industries. Some models are similar to those of Imperial, Triumph, and Adler).

  • 3HPD, listed in book.
  • 5HPD, listed in book.
  • 8MK-AD aka EC30, listed in book.
  • 8S, 4-function, %, sq rt., green VFD, Japan.
  • 10HPD, listed in book.
  • 12HT, listed in book.
  • 12HTA aka UA222, sci-funct, green fluor, 4-AA rep batt, 3.5x6.0, Japan
  • 80K, listed in book. Photo.
  • 81CS, listed in book.
  • 81M, listed in book. Photo.
  • 88M, 4-function, %, memory, VFD.
  • 90K, listed in book.
  • 90S, listed in book. Photo.
  • 91K, listed in book.
  • 91S, listed in book.
  • 99T, listed in book.
  • 1010, listed in book.
  • 1020, 4-function, %, memory, sq rt., green VFD, Japan.
  • 1030, sci-funct, green VFD, 2-AA rep batt, 7.5x4.75" (7.5x12 cm), silver face, brown base, Japan.
  • Award GT8, listed in book.
  • Award MGT, listed in book.
  • Countess Royal aka UA-117, listed in book.
  • D120, listed in book.
  • D330, listed in book.
  • D330 II aka business calculator, listed in book.
  • Digital III, listed in book. Photo, inside 1, inside 2.
  • Digital IV, listed in book. Featured calculator.
  • Digital 5, listed in book. Featured British calculator.
  • Digital 5-M, 4 function, %, memory, green fluorescent, 4-AA rep batt, 3.5x5.9", Made in Japan for Imperial Typewriter Company Limited, Leicester, England. Appears to be the same as the Royal Award GT8. Photo. Featured British calculator.
  • Digital 5-T, listed in book. Featured British calculator.
  • Digital 88, listed in book.
  • Digital 88M, listed in book.
  • Five GT. Featured British calculator.
  • Mini Five, 4-function, blue VFD, Malaysia.
  • RC-84, 4-funct, %, square root, green VFD, 4-AA rep batt, 88x157x40mm/ 3.5x6.2x1.6". Photo.
  • RSC-40, 4-funct, mem, %, sq funct, recip, sgn chgn, pi, VFD, 4-AA rep batt, 3.5x6.25".
  • Solar I, listed in book.
  • Special, 4-function, %. sq rt., green VFD.

 

 

Click to go to :
Calculator Book Addendum A-B
Calculator Book Addendum C-D
Calculator Book Addendum E-I
Calculator Book Addendum J-O
Calculator Book Addendum S
Calculator Book Addendum T-Z

 

Key to Abbreviations

Functions:
4-funct = 4 basic mathematical functions (addition, subtraction, multiplication, division)
sci-funct = scientific or engineering functions (logarithmic and trigonometric functions such as log, sine, and cosine and usually memory, square, pi, etc.)
mem = memory
% = percent function
exp = exponent
paren = parentheses
pi = pi value
recip = reciprocal
sgn chg = sign change
sq rt = square root
sq funct = square functions (including square and square root)

Battery Type:
button rep batt = very small, disk-shaped, replaceable batteries commonly termed button-types, used mainly in LCD models.
rep batt = replaceable batteries (such as 9V, AA, C, and N batteries)
rep batt pack = replaceable batteries in a removable pack
sealed batt = rechargeable batteries sealed in the case
sealed batt pack = rechargeable batteries in a removable pack

Display Type:
See the section on Calculator Displays for more detailed information.
Displays have 8 digits unless specified otherwise.

COS-LCD = Early Liquid Crystal Display from Sharp showing silver digits on a dark background. COS stands for Crystal on Substrate. This display was used as early as October 1973 but eventually was phased out.
fluor = see VFD.
Gas discharge = Display containing all digits sealed in a single package employing  gas discharge to generate light in the same way as a neon lamp. Normally give amber- or orange-colored digits, and typified by the Panaplex® used by a few calculator manufacturers.
LCD = Liquid Crystal Display, a flat, gray-digit type of display type that uses less power and was embraced by calculator makers by the end of the 1970s. Early versions (used in the early 1970s) by Rockwell and Sharp are included in this guide.
LED = Light Emitting Diode display (usually red although sometimes a purple filter was used to color the display). LEDs often have small half bubble-like covers over the digits. tube or mini-tube = separate vacuum or fluorescent tube for each digit of display.
Yellow LCD = Early LCDs had a reliability problem with ultra-violet light and manufacturers used a yellow-colored filter over the normally gray display to remedy that. Refinements in later LCD designs removed the need for the filter.
VFD = Vacuum Fluorescent Display. Display containing all digits sealed in a single tube generating light from an electrical discharge onto a fluorescent material. The color of the digits is normally green or blue, or somewhere in between.

Other Information:
Klixon keypad = Texas Instruments Klixon® keypad was one of the earliest keypads and used greatly by Bowmar and a few other early calculator makers. It had the four basic functions and used metal key pads about 1/2" square.
Japan (for example) = country of manufacture as stated on calculator
RPN = Reverse Polish Notation, a method of calculating and user data entry used by HP calculators. A few other manufacturers also used RPN in more limited scale.
"aka" (also known as) is used when there is another name or model variation on the calculator.
"c" (for example, c1973) is used as "circa," denoting at approximately that time.

 

A big thanks to Thomas Brockmeier, Richard Brooks, Andrew Davie, Larry Gilbert, Niels Grot, Palmer Hanson, Steve Haynes, Robert King, Kent King, Jeff Lane, Philippe Leckler, Ken Meine, Bob Patton, James Redin, and CB Wilson for their help.

 

How to Buy the Book!!!!

Collector's Guide to Pocket Calculators

by Guy Ball and Bruce Flamm

This 204 page, softcover book is the world's most comprehensive listing of electronic pocket calculators from the 1970's, the so-called Golden Age of Pocket Calculators. Over 1,500 known calculators are detailed with information on features, size, display type, power type, and pricing. In addition, when known, the listing also contains date of sales, original pricing, and country of origin information.

The book features over 470 photographs of various models from over 240 manufacturers around the world (including calculators from lesser-known companies in England, Switzerland, Netherlands, Spain, Germany, Bulgaria, and Russia).

"The Collector's Guide to Pocket Calculators" includes a comprehensive value guide to help you gauge rarity and desirability of the various models -- especially as they relate to each other.

The book can be purchased for $23.95 plus $4 for USA first class mailing ($2 for US mailing via slower book rate, $6 for first class mailing to Canada and Mexico, and $8 for airmail to other countries). California residents please add $1.86 state sales tax.

!!!! SPECIAL OFFER !!!!

As a special offer, mention this page (newcalc1) and deduct $4 off the price of the book. This offer is only valid if you mention this page. We're trying to see how many people actually read this. If you do, it is a great way to get a great price on a great book!!

Mail to:
Wilson/Barnett Publishing
P.O. Box 345, Tustin, CA 92781-0345, USA
For additional information, contact co-author Guy Ball for additional details and purchase information.

 

Copyright ©1997 Guy Ball and Bruce Flamm, ©2002-2011 Nigel Tout
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