Texas Instruments SR-52 Handheld Electronic Calculator
date: label: date made
content: 1977
name: label: maker
content: Texas Instruments
notes: label: Description
content: This handheld programmable scientific electronic calculator has a black plastic case and forty-five small rectangular plastic keys arranged in nine rows. In addition to ten digit keys, a decimal point key, and a change sign key (all white), the calculator has a total key, four arithmetic function keys, a clear key, a clear entry key, and a "2nd" key (all gold). The remaining keys are brown. Pushing the “2nd” key allows most of the keys to serve a “dual function,” which is given in text above the keys.
label: Description
content: The space for programming cards is just above the keyboard. A mark just above this reads: TEXAS INSTRUMENTS SR-52. Behind it are an R/D (radians/degrees) and an on/off switch. Behind this is an LED display that shows ten positive or negative digits of the result as well as powers of ten from -99 to +99.
label: Description
content: The power supply plugs into the calculator along the back edge. A mark on it reads: MODEL AC 9130A.
label: Description
content: A sticker on the back of the calculator reads in part: TEXAS INSTRUMENTS (/) SR-52 (/) Serial No. (/) SR-52 6827133. It also reads in part: ASSEMBLED IN USA. Below the sticker is a compartment that holds three batteries. A sticker for it reads in part: TEXAS INSTRUMENTS BATTERY PACK BP-1. Removing the battery pack reveals two chips. The larger has text that reads: TMC0501NL (/) EP 7650. The small one has the mark: TMC 0595 NL (/) DP7644. A mark on the back of the calculator near the bottom reads: LTA1377.
label: Description
content: The calculator also has a black zippered case with a carrying loop and a belt clip.
label: Description
content: Also included with the object are four black plastic folders that hold magnetic cards with programs on them, a larger folder of this sort with a cleaning card, and a tablet of preprinted forms for writing programs. In addition there are seven documents relating to the operation of the calculator. These include the spiral-bound <I>Owner's Manual</I> and <I>Operating Guide</I>, both copyrighted in 1975. In addition there are three spiral-bound books with program listings for the calculator. The first, copyrighted in 1975, has title <I>Program Manual BA1 Basic Library</I>. The second, copyrighted in 1976, has title <I>Program Manual EE1 Electrical Engineering Library</I>. The third, also copyrighted in 1976, has title <I>Program Manual F11 Finance Library</I>. All of these books are stamped on the inside with the name of the donor. The name also is stamped on two paperback books from 1976, one with title <I>Program Manual Aviation Library</I> and the other called <I>Programming Workbook</I>.
label: Description
content: All of these materials are stored in a cardboard box that shows the calculator on the cover.
label: Description
content: Compare 2010.3093.01 and 1987.0487.297.
label: Description
content: Ball & Flamm give a 1976 price of $229.
label: Description
content: Reference:
label: Description
content: Guy Ball and Bruce Flamm, <I>The Complete Collector’s Guide to Pocket Calculators</I>, Tustin, CA: Wilson/Barnett, 1997, p. 154.
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: 1987.0435.01
label: accession number
content: 1987.0435
label: catalog number
content: 1987.0435.01
objectType: label: Object Name
content: electronic calculator
physicalDescription: label: Physical Description
content: plastic (case; adapter; carrying case; keys material)
label: Physical Description
content: metal (circuitry; zipper material)
label: Physical Description
content: paper (manuals; sticker; box material)
label: Measurements
content: overall: 3/4 in x 3 in x 6 1/2 in; 1.905 cm x 7.62 cm x 16.51 cm