Texas Instruments SR-10  
Written by Accutron on 2010-01-21  

The SR-10 is Texas Instruments' first "scientific" calculator, introduced in 1972 as a low-cost competitor to the vastly superior Hewlett-Packard HP-35. Despite assertions by TI's marketing department, the SR-10 only vaguely qualifies as a scientific calculator, as it is completely lacking any trigonometric functions. TI would not match the feature set of the HP-35 until the introduction of the SR-50 in 1974, by which time HP had already introduced the HP-45 and HP-65.

The model pictured here is a Version 2 variant, introduced in 1973. All variants of SR-10 are based on the TMS0120NC scientific calculator chip.

Texas Instruments SR-10 scientific calculator. Unlike the Version 1 variant, this Version 2 variant uses 12 discrete Monsanto MAN-3A 7-segment LED displays.

This article is part of the [Electronic Calculators] exhibit.

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