DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-EC7 Pro
| Date of introduction: | January 2006 | Display technology: | LCD |
| New price: | 17.59 | Display size: | 12 characters and 12 |
| Size: | 6.5" x 4.5" x 1.1" | ||
| Weight: | 5.4 ounces | Serial No: | |
| Batteries: | CR2032 | Date of manufacture: | mth 11 year 2005 |
| AC-Adapter: | Origin of manufacture: | China (N) | |
| Precision: | 12 | Integrated circuits: | |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
This
TI-EC7 Pro was introduced in 2006 together with the TI-EC3
and TI-EC5 in Europe. It followed the
-1796 and -2003
introduced already in 1999. It is not easy to follow the decision path why a
complete series of Euro-calculators was introduced in 2006. Please remember that
on January 1st, 2002 the introduction of the new bank notes and coins
took part in EMU (European Monetary Union).
Compared with the traditional basic calculators the EC-7 Pro
added a scrollable entry line featuring 12 characters to the display. The upper line
permits to recall the last entry and to correct it instantly. We know this
feature since 1999 from the scientific calculator TI-30X
IIB.
Read more about the Euro here.
Dismantling
the TI-EC7 reveals with a single-chip calculator circuit bonded directly to a
printed circuit board (PCB) a technology known from the 1990's.
Shortly after the introduction of the TI-EC7 Pro the successor TI-EC7
Pro+ was announced together with the TI-EC3+
and TI-EC5+. At first glance the only
changes are a new up-to-date design but Texas Instruments addressed the owners
of the original TI-EC7 Pro with an important product update:
| EC7 Pro Product Update We have recently become aware of a computational issue with the EC-7 calculator. This does not affect the EC-3 or EC-5 models, or any of TIs other calculators. When inputting figures less than 1.0 on the EC-7, you must input a zero before the decimal. Otherwise the answer will be incorrect. For example, in the EC-7 100 .5-.5 = 100; 100- 0.5-0.5 = 99. For more information, please contact our customer service center at: Texas Instruments Education Technology, 800 Pavilion Drive, Northampton, NN4 7YL Telephone: 020 8230 3184 (© 2007: http://education.ti.com/educationportal/sites/UK/nonProductSingle/ec7pro_update.html) |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, May 6, 2006. No reprints without written permission.