Object Details
- Description
- This handheld electronic calculator has a metal and dark brown and tan plastic case and an array of twenty-five square plastic keys. These include ten digit keys, a decimal point key, a total key, four arithmetic function keys, and four memory keys. In addition the instrument has a change sign key, an exchange key, a square root key, a percentage key, and a clear entry/clear key. Above these is the on/off switch. Behind is an eight-digit red LED display. A mark at the back reads: Unisonic 1540L.
- A jack for a power adapter is along the back edge. At the top of the back is a compartment for two AA batteries. A sticker inside it reads: 59545. A sticker near the base of the back reads in part: Remove batteries if unit unlikely (/) to be used for more than 7 days. (/) Made in Hong Kong.
- References:
- [Advertisement], Ludington [Michigan] Daily News, August 29, 1977, p. 18. Unisonic 1540L on sale for $8.88, regularly $11.59.
- [Advertisement], Grand Prairie [Texas] Daily News, August 11, 1977, p. 14. Unisonic 1540L on sale for $8.88, regularly $11.59.
- Location
- Currently not on view
- Data Source
- National Museum of American History
- maker
- Unisonic
- date made
- ca 1977
- Credit Line
- Gift of John B. Priser
- Physical Description
- metal (case; circuitry material)
- paper (stickers material)
- plastic (case; keys material)
- Measurements
- overall: 7/8 in x 2 3/4 in x 5 3/4 in; 2.2225 cm x 6.985 cm x 14.605 cm
- Object Name
- electronic calculator
