**TI DataChron**: A five-function calculator with memory that also
functions as an alarm clock, stopwatch, and calendar.**TI Pocket Info**: A calculator that also stores phone numbers and has a
built-in clock.

**1. TI-1775+**: A successor to the DataChron, this clock/calculator can also
compute gross profit margins.

**2. TI Europa**: The Europa is a full-function desktop organizer,
including a four-function calculator, clock, calendar, and address book.

**TI-2200+, TI-2200II**: These examples of TI's line of checkbook
calculators are designed to fit inside a checkbook and can track up to three accounts.

A couple of computer science calculators:

1. **TI Programmer**: Great for octal, decimal, and hexadecimal
arithmetic.

2. **TI LCD Programmer**: Same ideas, just a different display.

**Goulds Pumpulator**: A TI Business Analyst I, modified for the
specific needs of this company. (I'm still trying to figure this
one out.)

**Texas
Instruments LogPit**: This calculator was sold in Europe (note the German
legends on some of the keys) and carries out common driving calculations.

Some educational calculator/games:

**1. TI Little Professor--LED version**: A math tutor from the
mid-01970's. This one is instantly recognized as an old favorite by many
visitors to my office.
**2. TI Dataman**: Slightly later math tutor/video game machine.

**1.
TI Little Professor--LCD version**: The classic moves into the 01980's.**2.
Novus Quiz Kid:** With this game, you key in a full equation and press the ?
key. If the equation is correct, the left (green) eye lights up; if wrong,
the right (red) eye lights up.**3. TI Solar Little Professor**: Into the
01990's now, with this model sold in Europe.

**1. TI Math...To Go!**: A 01980's update of the Little Professor, complete
with convenient handle. Can also be used as a four-function calculator.
**2. TI Math Marvel**: An earlier LED alternative to the Dataman and
Little Professor.**3. Mickey's Math Adventure**: Operationally similar to
Math...to Go!.

**1. TI Mickey
Mouse**: Basic four-function machine.**2. Mickey Math**: Made by Omron
and distributed by Alco, this one only carries 6 digits in the blue-green LED
display.

Speaking
of fictional characters, here's the **TI ET** calculator. I'll be the
first one to admit that this loses something without the ET figurine that was
packaged with this machine.

**1.
Limax
Puzzle**: A standard five-function calculator; what's special about this one
is that the colored key covers slide around and can be repositioned. No
effect on the calculations--the numbers stay where they were installed.

The pseudoscience of biorhythms had a brief flirtation with fame in the mid-01970's--just as the electronic calculator was coming into wide distribution. It's no shock, therefore, to see some specialized machines for computing these cycles. (The TI-58, 58C, and 59 included biorhythm charting programs on the Leisure Library Module.)

**2. Kosmos 1****3.
Casio Biolator**: This calculator, sadly, is obsolete--it worked with dates
only through December 31, 01999. Not Y2K compliant.

**Radio
Shack Astro**: Speaking of pseudosciences, there's none bigger than astrology,
and this calculator allows computation of horoscope "information".

Another fortunate concidence for the fledgling personal calculator industry in the mid-01970's was the effort to convert the United States to the metric system. This led to the introduction of several calculators preprogrammed especially for unit conversions. (The TI-55 has several keys devoted to conversions, whicle the TI-58 and 59 can do conversions through a library module program.)

**1. Sears Universal Converter****2. Novus
International Computer**

**Personal Bowling Computer**: In addition to functioning as a
four-function calculator, this machine also manages bowling scores and computes
averages. I put this one to work during the wedding reception of my
friends Kristie and Steve Donohue.

Last revision:16 July 02004.

This page is Y10K compliant.

This page is Y10K compliant.