DATAMATH CALCULATOR MUSEUM
|
DATAMATH CALCULATOR MUSEUM |
Texas Instruments SR-56
| Date of introduction: | May 21, 1976 | Display technology: | LED-stick |
| New price: | $179.95, DM 598.00 | Display size: | 10 + 2 |
| Size: | 5.8" x 3.2" x
1.3" 147 x 81 x 32 mm3 |
||
| Weight: | 8.5 ounces, 240 grams | Serial No: | 13757 |
| Batteries: | BP1A | Date of manufacture: | wk 32 year 1976 |
| AC-Adapter: | AC9130A | Origin of manufacture: | Italy (RCI) |
| Precision: | 12 | Integrated circuits: | TMC0501, TMC0537, TMC0538, TMC0599 |
| Memories: | 10 | ||
| Program steps: | 100 | Courtesy of: | Joerg Woerner |
| Download leaflet: | 
(US: 7.8M Bytes)
(US: 3.5M Bytes) |
Download manuals: |
(US: 15.0M Bytes)
(US: 13.1M Bytes)
(US: 26.8M Bytes) |
Introduced
only few month after the SR-52 Programmable, the SR-56
was it's small brother. The housing looked identical to the SR-51A,
only the LRN-key gave you an idea of it's programmability. Compared to the SR-52
it uses only one instead of two memory-chips (the TMC0599), this reduced the
possible program length from 224 steps to 100 steps. Main disadvantage was the
lack of a permanent storage like a card reader or the continuous memory of the
later TI-58C.
This calculator works with both the PC-100 and PC-100A printer cradle.
There are two different versions of the calculator reported,
one with and one without the word "Programmable" under the SR-56 logo.
The
SR-56 uses like the SR-50, SR-51 and SR-52 the
the
TMC0500 Building Blocks for Scientific and Programmable Calculators. It is
surrounded by two TMC0537/TMC0538
SCOM (Scanning and Read Only Memory) Chips and the TMC0599
Multi-Register Chip.
According
to Texas Instruments the SR-56 was introduced May 21, 1976 which is around week
20 of the year. Recently French collector Francis Martin discovered two SR-56
with production codes LTA1176 and LTA1276. Dismantling the calculators gave
date codes of the two SCOM Chips of week 11 in the year 1976, too. This proofs that the SR-56 were manufactured
already in March and we assume that Francis is the lucky owner of rare
"pre-production run" calculators.
In the meantime Ken Kaplan revealed a production code LTA0876 and date codes on the SCOM Chips of week 05 in the year 1976.
+++ UPDATE March 2010: Lynn Shelley's SR-56 features a production code DTA0476 and date codes of the SCOM Chips with weeks 02 rsp. 03 of the year 1976. +++
Texas
Instruments introduced on May 24, 1977 the famous calculator trio TI-57,
TI-58 and TI-59 replacing both
the SR-52 and SR-56. German collector Stephan Feinen discovered recently a SR-56
with a production code of 2477ACH - weeks after the introduction of the
successors!
Don't miss a SR-56 manufactured in Brazil.
Fellow collectors - if you own a SR-56 please report us the serial number and date code on the back of the calculator for our SR-56 Database.
| Serial Number | Origin | Date code | Logo | Owner |
| 001202 | USA |
??? ??76 |
Enzo Messina | |
| 002030 | USA |
??? ??76 |
Dave Laffitte | |
| 003594 | USA |
DTA 0476 |
Lynn Shelley | |
| 004257 | USA |
DTA 0476 |
Scott Reynolds | |
| 004398 | USA |
DTA 0476 |
Richard Berry | |
| 006042 | USA |
LTA 0676 |
Bill Kabelac | |
| 006468 | USA | LTA 0676 | Bill Elliott | |
| 006902 | USA | LTA 0676 | John Reichmann | |
| 007097 | USA | LTA 0676 | Dr. Kevin Easley | |
| 007951 | USA | LTA 0876 | Miroslav Krob | |
| 010946 | USA | LTA 1276 | Paul Dadd | |
| 012794 | USA | LTA 0876 | Luciano Bonfigli | |
| 012978 | USA | LTA 0876 | Roberto Paoletti | |
| 014595 | USA | LTA 1276 | Michael Klevickis | |
| 019040 | USA | LTA 1276 | Carlos | |
| 019242 | USA | LTA 1276 | Martin Ndzelen | |
| 021968 | USA | LTA 1276 | Ivar Magnusson | |
| 026894 | USA | LTA 2476 | IJayantilal M Patel | |
| 028398 | USA | LTA 0876 | Marie Lisa Collas | |
| 028531 | USA | LTA 0876 | Coy Lam | |
| 028985 | USA | LTA 0876 | Michael Mehlhorn | |
| 029118 | USA | LTA 0876 | Osman Karaokcu | |
| 029747 | USA | LTA 0876 | Marc-Eric Amstutz | |
| 029990 | USA | LTA 0876 | Joerg Woerner | |
| 032022 | USA | LTA 4176 | Bill Hastings | |
| 032705 | USA | LTA 4176 | Palmer Hanson | |
| 035900 | USA | LTA 4176 | Pat_man_pdo | |
| 037453 | USA | LTA 3876 | James Doig | |
| 038477 | USA | LTA 1176 | John M. | |
| 042489 | USA | LTA 0876 | François Jacques | |
| 044120 | USA | LTA 0876 | Giovanni Legnani | |
| 044311 | USA | LTA 0876 | Kurt Pribil | |
| 044749 | USA | LTA 1176 | João Carlos do Rosário | |
| 045602 | USA | LTA 1176 | Mike Parsons | |
| 046199 | USA | LTA 0876 | Computer History Museum | |
| 046479 | USA | LTA 0876 | Ken Kaplan | |
| 046644 | USA | LTA 0876 | Clark Casale | |
| 048109 | USA | LTA 2076 | Ken H. Meine | |
| 051730 | USA | LTA 2076 | Ben Davis | |
| 055273 | USA | LTA 3076 | Wolfgang Kemper | |
| 055673 | USA | LTA 3076 | Maite Urrutia | |
| 056731 | USA | LTA 2076 | Jack Crafchick | |
| 056955 | USA | LTA 2076 | Gabriel Baum | |
| 060538 | USA | LTA 1276 | R.J. Legman | |
| 060685 | USA | LTA 1276 | John Versluys | |
| 061649 | USA | LTA 1276 | Ray Foulkrod | |
| 062625 | USA | LTA 1276 | Joerg Woerner | |
| 065865 | USA | LTA 1276 | George Nix | |
| 066311 | USA | LTA 1276 | Hans-Peter Bieger | |
| 067219 | USA | LTA 4176 | Al Paslow | |
| 069417 | USA | LTA 3276 | Joerg Woerner | |
| 079905 | USA | LTA 2476 | Jack Crafchick | |
| 080968 | USA | LTA 3076 | Alain Gressier | |
| 083257 | USA | LTA 3076 | Leo Wilkie | |
| 083301 | USA | LTA 3076 | Joerg Woerner | |
| 088033 | USA | LTA 3076 | Claus Buchholz | |
| 088661 | USA | LTA 3076 | Dave | |
| 090418 | USA | LTA 3776 | Walter Roberson | |
| 093896 | USA | LTA 3776 | Edward Boyles | |
| 094013 | USA | LTA 3176 | Hugh Wilkinson | |
| 094606 | USA | LTA 3176 | BillPeacher | |
| 095984 | USA | LTA 3276 | Randall Scheuerman | |
| 098184 | USA | LTA 3676 | Glen Petersen | |
| 098537 | USA | LTA 3676 | Computer History Museum | |
| 102519 | USA | LTA 3776 | Programmable | Bob Tessier |
| 103493 | USA | LTA 3976 | Lenny Tosto | |
| 103998 | USA | LTA 3976 | David Balcaen | |
| 108461 | USA | LTA 3176 | Stephanie Huang | |
| 109527 | USA | LTA 3276 | Jim Murphy | |
| 112881 | USA | LTA 3576 | Guenther Engelhart | |
| 113960 | USA | LTA 3576 | Michael Young | |
| 114101 | USA | LTA 3576 | Michael Shackelford | |
| 118534 | USA | LTA 3676 | Paul Kowalski | |
| 118713 | USA | LTA 3676 | Joerg Woerner | |
| 118822 | USA | LTA 3676 | Gavin Wickham | |
| 121400 | USA | LTA 3276 | Programmable | Joerg Woerner |
| 123276 | USA | LTA 4676 | Ernest Orr | |
| 123480 | USA | LTA 4676 | Joy Eberhardt | |
| 123831 | USA | LTA 3176 | Mark Sherman | |
| 130278 | USA | LTA 5176 | Ken H. Meine | |
| 130956 | USA | LTA 5176 | Henry Gleizer | |
| 131439 | USA | LTA 5176 | Marie Lisa Collas | |
| 131819 | USA | LTA 5176 | Al Paslow | |
| 132929 | USA | LTA 4976 | Vasiliy Tolstoy | |
| 134128 | USA | LTA 4976 | Mario Cusenza | |
| 135621 | USA | LTA 0477 | Javier Juncadella | |
| 137931 | USA | LTA 4776 | Programmable | Miroslav Krob |
| ______ | USA | LTA 0577 | Programmable | Joerg Woerner |
| 145936 | USA | LTA 4876 | Victor Rollinger | |
| 146169 | USA | LTA 4876 | n.a. | |
| 146241 | USA | LTA 4976 | Joerg Woerner | |
| 146278 | USA | LTA 4976 | Miroslav Krob | |
| 146512 | USA | LTA 4976 | Uwe Stöcks | |
| 146619 | USA | LTA 4976 | D. van der Neut | |
| 152051 | USA | LTA 0877 | Programmable | Joerg Woerner |
| 154031 | USA | LTA 4576 | S.Plavinski | |
| 154601 | USA | LTA 4676 | Erik Polk | |
| 154605 | USA | LTA 4676 | Roger Ogé | |
| 154880 | USA | LTA 4676 | Programmable | John Lambert |
| 155114 | USA | LTA 4676 | Marko Sokolich | |
| 156054 | USA | LTA 4876 | Brian White | |
| 163274 | USA | LTA 0277 | Programmable | Jack Hummingbird |
| 163654 | USA | LTA 0377 | Programmable | Klaus Boehm |
| 164416 | USA | LTA 0277 | Programmable | Ken H. Meine |
| 166016 | USA | LTA 0277 | Programmable | Don |
| 167288 | USA | LTA 0377 | Programmable | Eric Schwarz |
| 169517 | USA | LTA 0577 | Programmable | Dr Steve Weddell |
| 170452 | USA | LTA 0577 | Programmable | Joerg Woerner |
| 173341 | USA | LTA 5176 | Dr. Gar Won Ko | |
| 173990 | USA | LTA 5176 | Jake Gowans | |
| 176799 | USA | LTA 0677 | Enrique Garcia Ortiz | |
| 177154 | USA | LTA 0677 | David Ribera | |
| 177390 | USA | LTA 0677 | Zbynek Hak | |
| 177787 | USA | LTA 0677 | Thomas Kapper | |
| 182052 | USA | LTA 0677 | Programmable | Greg Kulp |
| 182131 | USA | LTA 0677 | Programmable | William Ramsey |
| 182550 | USA | LTA 0677 | Sid Ellis | |
| 188872 | USA | LTA 0477 | Programmable | Joerg Woerner |
| 190055 | USA | LTA 0277 | Joerg Woerner | |
| 191052 | USA | LTA 0477 | Programmable | Dr. Jürgen Rodenkirchen |
| 191156 | USA | LTA 0477 | Lynda Charles Shelton | |
| 191372 | USA | LTA 0477 | bennyboy6 | |
| 193158 | USA | LTA 0477 | Mark E. Berger | |
| 2497970 | USA | LTA 1577 | John Jones | |
| 2498363 | USA | LTA 1577 | Programmable | Harry Shaw |
| 2499159 | USA | LTA 1677 | José López | |
| 3101291 | USA | LTA 1077 | Bruce Kernes | |
| 051742 | Brazil | 5076 CIB | Joerg Woerner | |
| 054273 | Brazil | 1877 CIB | André Luis Trentin | |
| 054399 | Brazil | 2177 CIB | Roberlei Gentil Toniete | |
| 9101370 | Netherlands | 1676 ACH | Erich Schikuta | |
| 9102216 | Netherlands | xxxx ACH | Luis Ametrans | |
| 9103424 | Netherlands | 1476 ACH | Gilbert Leray | |
| 9103776 | Netherlands | 1476 ACH | Tihomir Santek | |
| 9103817 | Netherlands | 1476 ACH | Matthias Hofer | |
| 9105502 | Netherlands | 3976 ACH | Karol Orlowski | |
| 9106757 | Netherlands | 1177 ACH | Maciej Wirkus | |
| 9107471 | Netherlands | 1976 ACH | Henrique Martins | |
| 9107752 | Netherlands | 0577 ACH | John Warman | |
| 9108417 | Netherlands | 2376 ACH | Rudolf Lovnički | |
| 9108764 | Netherlands | 2276 ACH | Juan Jose Romera | |
| 9108918 | Netherlands | 2376 ACH | Leen Boers | |
| 9109964 | Netherlands | 1876 ACH | José Levon | |
| 9110392 | Netherlands | 2376 ACH | Rafael Sevilla | |
| 9111014 | Netherlands | 2276 ACH | Leo van Hoeken | |
| 9111387 | Netherlands | 2376 ACH | Josef Bém | |
| 9113462 | Netherlands | 2376 ACH | Erik Remander | |
| 9114429 | Netherlands | 2476 ACH | John Fletcher | |
| 9114697 | Netherlands | 2276 ACH | Gordon Johnston | |
| 9115309 | Netherlands | 2476 ACH | Bob Worsley | |
| 9116613 | Netherlands | 4776 ACH | Doug | |
| 9116904 | Netherlands | 4876 ACH | Rudi Verdoodt | |
| 9117455 | Netherlands | 4876 ACH | Joerg Woerner | |
| 9119154 | Netherlands | 4376 ACH | Lars Olejnik | |
| 9119233 | Netherlands | 4376 ACH | Sture Bloom | |
| 9119742 | Netherlands | 4376 ACH | Joerg Woerner | |
| 9120647 | Netherlands | 4876 ACH | Joerg Woerner | |
| 9121717 | Netherlands | 3477 ACH | Pierre Morisset | |
| 9121832 | Netherlands | 0377 ACH | Richard Kaye | |
| 9122526 | Netherlands | 5276 ACH | João Carlos do Rosário | |
| 9122910 | Netherlands | 0177 ACH | Stuart of Blyth | |
| 9123166 | Netherlands | 4876 ACH | Thomas Ritschel | |
| 9126020 | Netherlands | 3477 ACH | Joerg Woerner | |
| 9126481 | Netherlands | 0477 ACH | Paul Hofbauer | |
| 9127791 | Netherlands | 0277 ACH | Giovanni Bellini | |
| 9______ | Netherlands | 1277 ACH | Hans Larson | |
| 9______ | Netherlands | 1377 ACH | Marie Lisa Collas | |
| 9______ | Netherlands | 1777 ACH | Erich A. Gindl | |
| 9______ | Netherlands | 1977 ACH | Kurt Pribil | |
| 9______ | Netherlands | 2377 ACH | Allan W B Stalker | |
| 9______ | Netherlands | 2477 ACH | André Wilhelmus | |
| 9136908 | Netherlands | 1977 ACH | Owen Savill | |
| 9138504 | Netherlands | 2477 ACH | Michael Behnsen | |
| 9143748 | Netherlands | 1877 ACH | Zbynek Hak | |
| 9145454 | Netherlands | 1877 ACH | Thomas Gill | |
| 9147826 | Netherlands | 2277 ACH | Tom Pereira | |
| 91486xx | Netherlands | 1277 ACH | Miroslav Krob | |
| 9153225 | Netherlands | 1377 ACH | Aron Barman | |
| 9154314 | Netherlands | 1577 ACH | Tiny Henst | |
| 9154587 | Netherlands | 1577 ACH | John Dale | |
| 9159914 | Netherlands | 1277 ACH | Thomas Gill | |
| 9______ | Netherlands | 2177 ACH | Marie Lisa Collas | |
| 9______ | Netherlands | 2477 ACH | Stephan Feinen | |
| 9______ | Netherlands | 2477 ACH | Marc van Lemmen | |
| 9______ | Netherlands | 2477 ACH | Christoph Kraft | |
| 9194747 | Netherlands | 2477 ACH | Ignacio Sánchez Reig | |
| 07287 | Italy | 1377 RCI | João Ferreira do Rosário | |
| 10693 | Italy | 3876 RCI | Erik Waelchli | |
| 12140 | Italy | 3876 RCI | Thomas Fänge | |
| 13035 | Italy | 3276 RCI | Marcus von Cube | |
| 13062 | Italy | 3276 RCI | Lars Herold | |
| 13525 | Italy | 3276 RCI | Dieter Teuchert | |
| 13757 | Italy | 3276 RCI | Joerg Woerner | |
| A12385 | Italy | 3176 RCI | Stephan van Radecke | |
| A14708 | Italy | 3276 RCI | Leonardo Galeone | |
| A15103 | Italy | 3676 RCI | Thorsten Gruschke | |
| A16658 | Italy | ____ RCI | Tsjip de Leeuwentemmer | |
| A17711 | Italy | 3276 RCI | Marie Lsia Collas | |
| 18150 | Italy | 4276 RCI | Zbynek Hak | |
| 19477 | Italy | 4076 RCI | Joerg Woerner | |
| 19818 | Italy | 4276 RCI | M. Door | |
| 19934 | Italy | 4276 RCI | isidoro | |
| 20485 | Italy | 1377 RCI | Tibor Cinkler | |
| 21480 | Italy | 4076 RCI | Monkey Nut | |
| 21502 | Italy | 4176 RCI | Bruno Studer | |
| _____ | Italy | 4276 RCI | Varga Balázs | |
| 34793 | Italy | 4876 RCI | Enrico Vidale | |
| 34860 | Italy | 4976 RCI | Maximilian Hauser | |
| 35794 | Italy | 4976 RCI | Audun Mathisen | |
| 50861 | Italy | 4976 RCI | Iztok Robic | |
| 51733 | Italy | 4976 RCI | Miroslav Krob | |
| 51717 | Italy | 4976 RCI | Michel Lahcem | |
| 51847 | Italy | 4976 RCI | Peter Engels | |
| 53206 | Italy | 4976 RCI | Dina Marian | |
| 53938 | Italy | 4976 RCI | Joerg Woerner | |
| 54020 | Italy | 4976 RCI | Joerg Woerner | |
| 54135 | Italy | 4976 RCI | Thomas Kapper | |
| 55196 | Italy | 4976 RCI | Marie Lisa Collas | |
| 55438 | Italy | 4976 RCI | Fedele Decandia | |
| 55527 | Italy | 4976 RCI | Jørn Skoven Pedersen | 57237 | Italy | 4976 RCI | Pierre Houbert | 57913 | Italy | 4976 RCI | Bastian Schmelzer |
| 59452 | Italy | 4976 RCI | Joerg Woerner | |
| 59728 | Italy | 4976 RCI | Ian Stirling | |
| 60300 | Italy | 4976 RCI | Juri Schauder | |
| 16949 | Italy | 0577 RCI | Programmable | John Dale |
| 20944 | Italy | 0577 RCI | Programmable | Christoph Oertli |
| 22102 | Italy | 1277 RCI | Programmable | Angelo Elifani |
| 30142 | Italy | 0577 RCI | Programmable | Paul Debono |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.