TI-SR-51-II. Advanced professional electronic calculator

The SR-50 was Texas Instruments' first scientific pocket calculator with trigonometric and logarithm functions. It enhanced their earlier SR-10 and SR-11 calculators, introduced in 1973, which had featured scientific notation, squares, square root, and reciprocals, but had no trig or log functions. 

This model was a hybrid between the well known SR-51A and the later TI-55. 

The SR-51-II was a powerful, full-functioning calculator is ideal for the advanced high school student to grow with into college and career. It offers solutions to simple arithmetic as well as trigonometric, logarithmic, and hyperbolic functions. It performs all the classical slide-rule functions and more: roots and powers, factorials, reciprocals, percent and percent-change, linear regression and trend-line analysis. Students can use the SR-51-II to help them with complex statistical problems as well: mean, variance, standard deviation and correlation among with seven unit conversions by direct key. It has three addressable memories with direct memory arithmetic and memory/display exchange.

TI’s AOS algebraic operating system allows complex mathematic expressions to be entered in the same order that they are written. Up to nine levels of parentheses are available to ensure proper and accurate interpretation of expressions. And, it handles up to five pending operations.

A fixed decimal option provides results displayed to as many as eight decimal places at directions of user. And, the SR-51-II can state numbers in scientific or engineering notation.

Serial number 0023788 LTA 3876 assembled in the USA and was kindly dontaed by Francis Hookham

Manufacturer: Texas Instruments
Date: 1976

Other Systems Related To TI-SR-51-II. Advanced professional electronic calculator:

Item Manufacturer Date
TI-2500 Datamath calculator Texas Instruments 1972
TI SR-10 Electronic Sliderule Texas Instruments 1973
TI SR-10 Electronic Sliderule Texas Instruments 1973
TI-SR-50 scientific pocket calculator Texas Instruments 1973
TI-2550 Memory Calculator (1st Design) Texas Instruments 1974
TI-2550 II Texas Instruments 1975
TI-SR-51A Version 1 Texas Instruments June 1975
TI-56 Programmable Calculator Texas Instruments May 1976
TI-1650 Programmable Calculator Texas Instruments 1977
TI-58 Programmable Calculator Texas Instruments 1977
TI-30 Scientific Calculator Texas Instruments January 1977
Texas Instruments TI-59 Texas Instruments May 1977
TI-42 MBA Electronic Calculator Texas Instruments August 1977
TI-45 Scientific Calculator Texas Instruments 1978
TI-33 Electronic Calculator Texas Instruments 1978
TI 2550-IV TI-2550-IV Arithmetic Calculator Texas Instruments 1978
Casio fx-140 calculator Texas Instruments 1978
TI-58C Programmable Calculator Texas Instruments 1979
TI-35 Scientific Calculator Texas Instruments 1979
TI LCD Programmer 1981 Texas Instruments 1982
Little Professor 26-82-RC1 Texas Instruments 1985
TI-74 Basicalc Texas Instruments 1986
TI-5038 Paper Free Printer Texas Instruments 1988
TI-92 Graphing Calculator Texas Instruments 1995
TI-Nspire Graphing Calculator Texas Instruments July 2008

This exhibit has a reference ID of CH31289. Please quote this reference ID in any communication with the Centre for Computing History.

 

TI-SR-51-II. Advanced professional electronic calculator


Click on the Image(s) For Detail


Help support the museum by buying from the museum shop

View all items

Founding Sponsors
redgate Google ARM Real VNC Microsoft Research
Heritage Lottery Funded
Heritage Lottery Fund
Accredited Museum