Texas Instruments TI-1100 II (3^rd design, Malaysia)

The production of the TI-1100 II was shifted around 1987 from Taiwan to Malaysia. This 3^rd design of the TI-1100 II looks from the outside identical to the previous design, nevertheless was the printed circuit board (PCB) changed completely and we uses even a different single-chip calculator circuit.

Recently we identified a 4^th design of the TI-1100 II manufactured in Taiwan late in October 1989.

In 1991 the design was changed dramatically and we got the TI-1100+.

Please read this anecdote from Gary N. Schumann:

"I bought one when it first came out and used it to calculate my tip percentages and to do my check out when was a waiter working my way through college at the University of Texas in the mid-1980s. Later, after eventually graduating law school - I pulled it out of a drawer - and to this day I still use it regularly to calculate my billable hours, post-judgment interest, etc.
I throw it in my brief case and take it with me to mediations. The funny thing is - in all of these years, I have never replaced the battery. It is still operating on the original battery that came with it when it was bought all of those years ago.
This has certainly been one of the most reliable pieces of electronic technology that I have ever purchased."

If you have additions to the above article please email: joerg@datamath.org.

© Joerg Woerner, January 19, 2003. No reprints without written permission.