Texas Instruments SR-16 II Handheld Electronic Calculator
date: label: date made
content: 1975
name: label: maker
content: Texas Instruments
notes: label: Description
content: This is an example of a scientific calculator introduced by Texas Instruments in 1975 that offered many of the capabilities of the SR-16 calculator at a lower cost. The handheld electronic calculator has a black plastic case with an array of thirty-one small rectangular plastic keys. In addition to ten digit keys, a decimal point key, a change sign key, a total key, four arithmetic function keys, a clear display key, and a clear key, the calculator has twelve further function keys. These are for powers, reciprocals, square roots, squares, logs to the base 10, storage, recall, summation, exponents, natural logarithms, entering exponents, and pi. The meaning of the keys is indicated on the keyboard, not on the keys themselves. Text on the keyboard, above the keys and to the right, reads: SR-16 II. Behind the keyboard is a twelve-digit LED display that shows eight-digit positive and negative numbers and two-digit positive and negative exponents. A mark below the display reads: TEXAS INSTRUMENTS. The on/off switch is right and slightly above this mark.
label: Description
content: The calculator has a jack for a recharger/adapter along the back edge. A sticker on the back gives instructions. It also gives the serial number SR-16 II 180524. It also reads: ASSEMBLED IN USA. Above the sticker is a compartment for three batteries. A mark below the sticker reads: LTA4375.
label: Description
content: Unscrewing four screws on the back reveals the workings of the calculator. It has a total of three chips. The largest of these is marked TMS1016NL (/) KAΔ7543. This is a TMS1016 chip, manufactured in late 1975.
label: Description
content: The calculator comes in a dark brown plastic zippered case with belt loop.
label: Description
content: References:
label: Description
content: [Advertisement], <I>New York Times</I>, May 5, 1976, p. 10. Gives a sale price of $29.
label: Description
content: [Advertisement], <I>Chicago Tribune</I>, October 19, 1975, p. A7. Gives price of $44.95.
label: Description
content: Guy Ball and Bruce Flamm, <I>The Complete Collector’s Guide to Pocket Calculators</I>, Tustin, CA: Wilson/Barnett, 1997, p. 153.
label: Description
content: Online Datamath Museum.
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Computers
label: See more items in
content: Computers & Business Machines
label: See more items in
content: Handheld Electronic Calculators
creditLine: label: Credit Line
content: Gift of John B. Priser
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1986.0988.352
label: catalog number
content: 1986.0988.353
label: accession number
content: 1986.0988
objectType: label: Object Name
content: electronic calculator
physicalDescription: label: Physical Description
content: plastic (case; carrying case material)
label: Physical Description
content: metal (circuitry material)
label: Physical Description
content: paper (sticker material)
label: Measurements
content: overall: 1 1/4 in x 3 in x 5 3/4 in; 3.175 cm x 7.62 cm x 14.605 cm