Object Details
- Casio Computer Company
- Description
- This handheld electronic calculator has a dark brown and cream-colored plastic case and a metal keyboard. In addition to ten digit keys, a decimal point key, four arithmetic function keys, and a total key, it has all clear, clear, square root, percentage, sign change, and three memory keys. Behind the keyboard is an eight-digit vacuum fluorescent display. A mark behind this reads: CASIO MEMORY A-1 ELECTRONIC CALCULATOR. The on/off switch is on the left side and a socket for an adapter is on the top edge at the left.
- At the top of the back of the calculator is a compartment for a single battery. A sticker inside the compartment reads: 1600683. On this example of the calculator, the compartment lacks a cover. A mark on the back of the case reads: CASIO MEMORY A-1 (/) BATTERY SUPPLY 1.5Vx1 (/) or use AC ADAPTOR AD-1S (/) 0.12W (/) H-814 MADE IN JAPAN (/) BM CASIO COMPUTER CO. LTD.
- Unscrewing a screw at the base allows one to fold open the case. This reveals a variety of electronic components, including a chip made by Hitachi and marked: HD3783 (/) 6G 41.
- Compare 1986.0988.331. Both calculators have the same number on the chip.
- The web site of Casio Corporation suggests that this calculator was introduced in 1974. However, the first advertisement found is from a March 1977, issue of the Chicago Tribune. This lists the Casio Memory A-1 as on sale for $12.95. A March 1978, advertisement in the same newspaper gives the same price.
- References:
- Casio Corporation website, with its museum.
- Chicago Tribune, March 2, 1977, p. B8.
- Chicago Tribune, March 19, 1978, p. J4.
- Location
- Currently not on view
- Credit Line
- Gift of John B. Priser
- 1976-1977
- ID Number
- 1986.0988.026
- catalog number
- 1986.0988.026
- accession number
- 1986.0988
- Object Name
- electronic calculator
- Other Terms
- electronic calculator; Handheld
- Physical Description
- plastic (case; keys; display cover; circuit boards material)
- metal (keyboard; circuitry material)
- glass (tube material)
- paper (sticker material)
- square (keys shape)
- Measurements
- overall: 3/4 in x 3 in x 4 1/2 in; 1.905 cm x 7.62 cm x 11.43 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_334440
- GUID (Link to Original Record)
- https://n2t.net/ark:/65665/ng49ca746a1-3b5d-704b-e053-15f76fa0b4fa
