Greetings to everyone visiting from The SR-50 Commemorative Edition site at Datamath.org! (My SR-50 is shown below). Visitors: Click here to go to my main calculator page--and thanks for stopping by.

Texas Instruments SR Electronic Slide Rule Series. Left to right:
**1. SR-10**: Two versions of this calculator exist; the other one has
"SR-10" in the red plastic up near the LED display.**
2. SR-11**: This was the first TI scientific with small keys.

3. SR-16

**1.
SR-16-II**: This one is noteworthy as the last TI scientific calculator without trig functions.**2.
SR-50**: The unusual styling makes this calculator a collectors' favorite.**3. SR-50A**

Left to right:
**1. SR-40**: Later in time, though earlier in numerical sequence.**
3. SR-51A
4. SR-51-II**

Texas Instruments TI-30 series. Still being extended.
**1. TI-30**: Probably the best-selling calculator ever, if legends are
to be believed. *Trivia note*: The TI-30 showed up on an episode of
NBC-TV's *Freaks and Geeks* in 01999. A couple of glaring errors
found their way into the script:

1. Despite the fact that the TI-30
was made in America, one of the characters describes it as "made in Japan", and
is surprised that a calculator that says "Texas Instruments" would have such an
origin.

2. The TI-30 is described as a
graphing calculator (Millie: "It graphs and everything!")--but the show was set in
01980, fully eleven years before TI's first graphing calculator and 6 years before
Casio launched the first graphing calculator.**2. TI-30X**: Displaying 69 factorial--which was for years the "ultimate"
number on a hand-held calculator.

**1. TI-30Xa Solar**
**2. TI-30X IIS**: Latest in the series. The "S" denotes a
solar-powered calculator; a companion model, the TI-30X IIB, uses batteries.

**1. TI-31
2. TI-33**: LED model manufactured and sold in Europe.

Two more TI-Euro calculators:
**1. TI-45**: European version of the SR-40 (above), with a blue-green LED
display.
**2. TI-51-III**: European equivalent of the TI-55 with 32 program steps
available.

**1. TI-34
2. TI-54**

**TI Collegiate or SC-10**: Notebook format. 30 of the right-side keys can be redefined
with the switch in the upper right.

**TI-52**: A
scientific calculator in the horizontal format used by TI in the late 01980's.

**1. TI-60X**: This calculator is scientific, but not programmable.
It's similar to the TI-68--one curious difference is that the alphanumeric
keyboard only includes twelve letters of the alphabet.
**2.
TI-68**: This pinnacle of the TI scientific line is a
somewhat-scarce collectible calculator.

**PC-200 printer**: This thermal
printer is compatible with several TI calculators from the 01980's, including
the BA-55 and TI-66. (Thanks to Jonathan Rodin for correcting this
list.)

Last revision: 23 October 02005.

This page is Y10K compliant.

This page is Y10K compliant.