Texas Instruments TI Business Analyst Handheld Electronic Calculator

This handheld electronic calculator is similar to those of the TI SR-51 family. It has a black plastic case with an array of forty small rectangular plastic keys. In addition to ten digit keys, a decimal point key, and a change sign key (all in white), the calculator has a total key and four arithmetic function keys (all in gold). The remaining keys are brown. One is for on/clear, one is for off, and another, marked "2nd," is pushed to activate the “dual function” indicated on the keyboard above most of the brown keys. The calculator has a variety of statistical, business, and mathematical functions, and limited memory.

Text above the keys reads: TEXAS INSTRUMENTS (/) TI Business Analyst. Behind this is an eight-digit LED display. The jack for a charger/adapter is on the right side of the calculator.

Text on the back of the calculator (there is no sticker) reads: TEXAS INSTRUMENTS (/) electronic calculator (/) SERIAL NO. (/) 9818968 LTA4976 (/) ASSEMBLED IN USA. An empty battery pack inside the middle of the back is marked: TEXAS INSTRUMENTS BATTERY PACK BP-7.

There are no screws to easily take apart the calculator. The device has a black plastic zippered case with a loop.

References:

[Advertisement], New York Times, October 19, 1976, p. 130. List calculator as selling for $42.

[Advertisement], Washington Post, May 13, 1977, p. A29. Business Analyst on sale for $34.95, regular price $39.95.

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