When was the ti 2500

Texas Instruments was the first company to mass produce silicon transistors in and it was Jack S. Kilby, a researcher with TI, who first demonstrated the integrated circuit in The development of the integrated circuit was a significant step for the continuing development of computer hardware, control logic systems and solid state applications.

This invention perpetuated the rapid development of faster and smaller machines. Icons of Beige - Poster Prints. Games Consoles - Trump Cards. Home Computer - Trump Cards. Computing Herstory - Book. Computing Herstory Postcard Set. Geek and Proud T-Shirt. Texas Instruments TI "Datamath" , 3rd. From the outside, the TI 3rd. Unfortunately, all the printing has been rubbed off the label on the machine illustrated, so it is not possible to positively determine which of these two models it actually is.

The 'Datamath' website suggests that the 'B' designation indicates that the calculator is fitted with a Bowmar 'Opto-stick' display, rather than a display from Texas Instruments. When this did not happen they fell back on LEDs which caused a shortage of these displays, which is probably why Texas Instruments used an LED from its competitor, Bowmar. Since the calculator here does not have a Bowmar 'Opto-stick' display then it is likely to be a 3rd version TI The rear of the 3rd.

Unusually, it takes four AA disposable cells, or only three rechargeable cells. The circuit board of the 3rd. The TI is similar to the TI 3rd. Hand-held Calculators. Vintage Calculators.

Versions illustrated: TI "Datamath", 1st. TI "Datamath", 2nd. International Media Interoperability Framework. IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. View manifest View in Mirador. Description This is an example of the first model of an electronic calculator marketed by Texas Instruments under its own name. The handheld electronic calculator has a tan plastic case with a dark brown keyboard.

It has an array of eighteen keys, sixteen of them square and two rectangular. These include ten digit keys, a decimal point key, a total key, four arithmetic function keys, a clear entry key, and a clear key.

Behind the keyboard is an eight-digit LED display. A jack for a power outlet is along the back edge.