Question about Texas Instruments TI-84 Plus Calculator

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Hello, I'm a police detective in Pennsylvania. A Texas Ins. TI-84 calculator showed up at our local pawn shop and appears to be stolen from Huston TX area. Because of the distance, I want to make sure that our system didn't hit on a model or product number instead of a serial number. Can you tell me if the following number for one of these calculators would be a serial number or not: 033317192120. Thank you, Lt. Clark Bearinger 717-735-3405

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Hello Sir,
The serial number of a TI84Plus calculator is found on the back of the calculator, between the two elongated depressed areas.
The structure of the identification number (serial number followed by manufacturing date) is as follows
dddddddddd_L-ddddL
where d stands for a digit, and L for a letter.
The string of 10 digits at the beginning is unique (that is the serial number) but the rest is not.

I checked the serial numbers of 7 different types of TI graphing calculators I own, and the structure is I described to you. There is one exception. The serial numbers of the TI92 and TI92Plus contain a letter V, at the beginning for one model and in the middle for the other. Whether containing one letter or not the first string is 10 characters long.

Good Luck Lieutenant.

Posted on Aug 21, 2010

Testimonial: "Thank you. From what you described, this would not be a valid serial number."

  • k24674 Aug 21, 2010

    I forgot to tell you that Texas Instruments do not register the serial numbers of the calculators ( as declared on their website).

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