Object Details
- Unisonic
- Description
- This handheld electronic scientific calculator has a metal and plastic case and an array of twenty-six rectangular plastic keys. The ten digit keys and decimal point key are white. They can take on a different meaning if the orange F key is pushed. The calculator can perform basic arithmetic; compute trigonometric and inverse trigonometric functions; and compute powers, exponents, natural logarithms, common logarithms, inverses, and square roots. It also has memory keys and a key for pi. To the right of the F key are radian/degree and on/off switches. A mark above this reads: Unisonic 799.
- Behind the keyboard is an eight-digit green vacuum fluorescent display. This display also could show a five-digit mantissa and two-digit exponent (with signs for both).
- A power jack is on the top edge.
- The back of the calculator has a sticker describing advanced problem solving. It reads in part: 799-A. It also reads in part: SERIAL NO. (/) 030944 (/) MADE IN JAPAN. Below this is a compartment for four AA batteries.
- Compare 1986.0988.116 (Unisonic 796).
- References:
- John F. Free, “Now There’s a Personal Calculator for Every Purpose,” Popular Science, 206 #2, February, 1975, pp. 78–81, 136–137. The Unisonic 799 is listed as selling for $99.
- [Advertisement], Hartford Courant, June 13, 1976, p. 15M. Unisonic 799 on sale for $26.88.
- Location
- Currently not on view
- Credit Line
- Gift of John B. Priser
- ca 1975
- ID Number
- 1986.0988.115
- accession number
- 1986.0988
- catalog number
- 1986.0988.115
- Object Name
- electronic calculator
- Other Terms
- electronic calculator; Handheld
- Physical Description
- plastic (case; keys; circuit board material)
- metal (case; circuitry material)
- glass (display material)
- paper (sticker material)
- Measurements
- overall: 1 1/4 in x 3 1/2 in x 6 in; 3.175 cm x 8.89 cm x 15.24 cm
- place made
- Japan
- See more items in
- Medicine and Science: Computers
- Computers & Business Machines
- Handheld Electronic Calculators
- National Museum of American History
- Record ID
- nmah_334529
- GUID (Link to Original Record)
- https://n2t.net/ark:/65665/ng49ca746b2-5f48-704b-e053-15f76fa0b4fa
