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:  051742
Batteries:  BP1A Date of manufacture:  wk 50 year 1976
AC-Adapter:  AC9130A Origin of manufacture:  Brazil
Precision:  12/13 Integrated circuits:  TMC0501, TMC0537, TMC0538, TMC0599
Logic:  AOS - 7 Pending Operations, 9 () Displays:  DIS234H
Memories:  10    
Program steps:  100 Courtesy of:  Joerg Woerner
Download leaflet:   (US: 7.6M Bytes) Download manuals:   (US: 15.0M Bytes)
  (US: 13.1M Bytes)
  (US: 26.8M Bytes)

SR-56_BR_BACK.jpg (559135 Byte)This SR-56 was manufactured in Brazil and seems to be identical with the US-manufactured models. The backside of the calculator sports a bold sticker with the serial number and country of origin and a Date code with "CIB" for Texas Instrumentos Eletrônicos do Brasil Ltda. - Campinas. Later Texas Instruments calculators sold in Brazil like the SR-40 LCD were assembled by Indústrias Gerais da Amazonia S.A..

SR-56_BR_PCB.jpg (537508 Byte)Dismantling the SR-56 reveals a well known printed circuit board (PCB), we noticed no differences to the US-built models.

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.

Don't miss the later TI-30 and Money Manager manufactured in Brazil, too.


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© Joerg Woerner, November 11, 2009. No reprints without written permission.