Computers & Business Machines
Imagine the loss, 100 years from now, if museums hadn't begun preserving the artifacts of the computer age. The last few decades offer proof positive of why museums must collect continuously—to document technological and social transformations already underway.
The museum's collections contain mainframes, minicomputers, microcomputers, and handheld devices. Computers range from the pioneering ENIAC to microcomputers like the Altair and the Apple I. A Cray2 supercomputer is part of the collections, along with one of the towers of IBM's Deep Blue, the computer that defeated reigning champion Garry Kasparov in a chess match in 1997. Computer components and peripherals, games, software, manuals, and other documents are part of the collections. Some of the instruments of business include adding machines, calculators, typewriters, dictating machines, fax machines, cash registers, and photocopiers
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Texas Instruments TI-1030 Handheld Electronic Calculator
- Description
- This handheld electronic calculator has a dark brown plastic case and metal keyboard with an array of twenty-four rectangular plastic keys (actually, the “1” key is missing). These include ten digit keys, an on/clear key, a decimal point key, a total key, four arithmetic function keys, an off key, a square root key, a percentage key, and four memory keys. A mark above the keyboard reads: TEXAS INSTRUMENTS TI-1030. Behind this is an eight-digit LCD display.
- The back of the calculator has a compartment for two very small batteries. Text above it reads in part: TEXAS INSTRUMENTS (/) electronic calculator. Scratched in the space for a serial number is the name: PRISER. The date mark reads: LTA3878. It also reads: ASSEMBLED IN USA.
- The calculator fits in a dark brown plastic jacket. A paper slip inside the jacket reads: NOTICE (/) Pressing some of the keys when (/) your calculator is off may cause (/) segments of the display to (/) appear. This is a normal func- (/) tion of the calculator and does (/) not affect the life of your (/) batteries.
- Text on the cardboard box indicates that this was part of the Texas Instruments Slimline series of calculators. A price tag indicates that it cost $16.88.
- Location
- Currently not on view
- date made
- 1978
- maker
- Texas Instruments
- ID Number
- 1986.0988.089
- catalog number
- 1986.0988.089
- accession number
- 1986.0988
- Data Source
- National Museum of American History
-
Corvus 804 Handheld Electronic Calculator
- Description
- This handheld electronic calculator has a plastic case that is bright orange on top and black on the bottom. The twenty-three plastic keys appear to have plastic stickers atop them—these are worn. The keys include ten digit keys, a decimal point key, a clear key, a total key (this is illegible), four arithmetic function keys, four memory keys, a square root key, and a percentage key. The on/off switch is in the upper left corner of the keyboard. Behind the keyboard is an eight-digit red LED display. A sticker behind this reads: CORVUS. An outlet for a power adapter is on the top edge.
- The back has a battery compartment for a single battery. A sticker below this has stamped on it: 34856. Scratched on the sticker is the number 804.
- The instrument has a black leather zippered case, which may not have come with it.
- Images of other examples of the calculator that are available online indicate that it was made in Hong Kong.
- For a brief time in the 1970s, Mostek Corporation sold electronic calculators through a subsidiary, Corvus Corporation of Dallas, Texas. Founded in 1969 as a spinoff of Texas Instruments, Mostek became a leading manufacturer of semiconductors. Some of its first products were chips used by the Japanese firm of Busicom in desktop electronic calculators. In 1970, Busicom introduced such a calculator that used only a single Mostek chip. Mostek became one of the world’s leading manufacturers of metal oxide semiconductor read only memories, before being acquired by United Technologies in 1979. According to trademark registration for Corvus, the term was first used in commerce referring to an electronic digital calculator in 1973. This is the latest Corvus calculator presently in the collections, dating from about 1976.
- References:
- [Advertisement], Lincoln Star, August 26, 1976, p. 110. Corvus 804 calculator sells for $14.95.
- [Advertisement], Texas Monthly, October, 1976, p. 47. This advertisement is for games that could be played on a Corvus 804 calculator.
- For images of a similar Corvus calculator, see the datamath.org website, accessed June 17, 2014.
- Location
- Currently not on view
- date made
- ca 1976
- maker
- Corvus Corporation
- ID Number
- 1986.0988.101
- catalog number
- 1986.0988.101
- accession number
- 1986.0988
- Data Source
- National Museum of American History
-
Bowmar 90506 Handheld Electronic Calculator
- Description
- This handheld electronic calculator has a gray plastic case, display window, and keys. It has an array of nine digit keys above the zero and decimal bars. Four keys for arithmetic functions are right of these. At the top is a percentage key, a total key, a clear key, and an on/off switch. Behind this is a red eight-digit LED display. A mark at the top reads: Bowmar.
- A plug for a power cord is on the right side. This example lacks a cord.
- An "OPERATING OUTLINE" in raised characters on the back of the case gives instructions. A tag at the bottom reads: MODEL 90506 SERIAL (/) NUMBER 126277 (/) BOWMAR/ALI Inc. Acton, Mass. 01720 U.S.A. (/) Made in U.S.A. Patent Pending
- Four screws hold the back of the case to the front. The case holds three circuit boards, one much smaller than the other two. The calculator has no separate battery compartment. This example lacks a battery or battery pack. A mark on the inside of the lid of the case reads: E905-020. A mark on the inside of the back of the case reads: E905-011.
- A Bowmar 905 (not 90506) calculator, with a percentage key but a different BOWMAR mark, was advertised in the Washington Post in 1973. A January 28, 1973 advertisement gives a price of $99.99.
- The form of the Bowmar trademark used on this calculator was registered by Bowmar Instrument Company of Fort Wayne, Indiana, on March 26, 1974. The date the mark was first used in commerce and the date of the trademark application are not given.
- Compare the Craig 4507, 1986.0988.311.
- References:
- Washington Post, January 28, 1973, p. K10.
- Guy Ball and Bruce Flamm, The Complete Collector's Guide to Pocket Calculators, Tustin CA: Wilson/Barnett 1997, pp. 35–36.
- Website of the U.S. Patent and Trademark Office.
- Location
- Currently not on view
- date made
- ca 1974
- maker
- Bowmar/Ali
- ID Number
- 1986.0988.105
- accession number
- 1986.0988
- catalog number
- 1986.0988.105
- Data Source
- National Museum of American History
-
Unisonic 830-A Handheld Electronic Calculator
- Description
- This handheld electronic calculator has a black- and silver-colored plastic and metal case with an array of twenty-one square plastic keys. These include ten digit keys and a decimal point key (white) as well as four arithmetic function keys, a total key, a clear key, a clear entry key, and a percentage key (turquoise). The square root and change sign keys in the topmost row are orange. Right of these, a mark scratched on the case reads: UNISONIC-830A. Right of this is an on/off switch. Behind is an eight-digit green vacuum fluorescent display. A power jack is on the back edge.
- A paper sticker on the back gives calculation examples. It reads in part: 830A. It also reads: SERIAL NO. (/) 004991 (/) MADE IN JAPAN. Below this is a compartment for four 1.5V (AAA) batteries.
- Compare 1986.0988.114 (a Unisonic 811-A). That calculator lacks the square root and change sign keys.
- No references found.
- Location
- Currently not on view
- date made
- ca 1977
- maker
- Unisonic
- ID Number
- 1986.0988.113
- accession number
- 1986.0988
- catalog number
- 1986.0988.113
- Data Source
- National Museum of American History
-
Unisonic 796 Handheld Electronic Calculator
- Description
- This handheld electronic scientific calculator has a metal and plastic case and an array of thirty-five rectangular plastic keys. The ten digit keys and decimal point key are white. The keys for total, four arithmetic functions, three trigonometric functions, three inverse trigonometric functions, natural logarithms, exponents, clear, pi, square roots, inverses, and exchange are colored turquoise. The enter exponent, CHN, and four memory keys are orange. A mark behind the keyboard reads: Unisonic 796. The radian/degree and on/off switches are to the right of this. 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 giving calculation examples. It reads in part: 796-A. It also reads in part: SERIAL NO. (/) 002305 (/) MADE IN JAPAN. Below this is a compartment for four AA batteries.
- Compare 1986.0988.115 (Unisonic 799).
- Reference:
- Unisonic 896 8 Digit Electronic Slide Rule Calculator Instruction Manual, available from wass.net. Accessed June 30, 2015. The manual is for the 796-B, but the diagrams appear very similar.
- Location
- Currently not on view
- date made
- ca 1975
- maker
- Unisonic
- ID Number
- 1986.0988.116
- accession number
- 1986.0988
- catalog number
- 1986.0988.116
- Data Source
- National Museum of American History
-
Unisonic 737 Handheld Electronic Calculator
- Description
- This handheld electronic calculator has a metal and plastic case with an array of twenty-five square plastic keys. These include ten digit keys, a decimal point key, two memory keys, a clear key, four arithmetic function keys, a total key, and a percentage key. Above the keyboard are a decimal point switch (floating decimal point, two digits after the decimal point, or four digits after the decimal point) and a subtraction summation switch. A mark behind this reads: Unisonic 737 (/) SLIDE RULETTE. Behind this is a green vacuum fluorescent display. Another switch and a jack for a power supply are along the back edge. Text on the back reads: Unisonic 737 (/) RATING 6V-DC 0.5W (/) NO. 028723 (/) MADE IN JAPAN. Below this is a compartment for four AA batteries.
- Compare MachVI Slide Rulette (1986.0988.254).
- Reference:
- [Advertisement], Washington Post, May 15, 1974, p. E7. Unisonic 737 “pocket memory calculator,” regularly priced at $69.96, on sale for $59.88.
- Location
- Currently not on view
- date made
- ca 1974
- maker
- Unisonic
- ID Number
- 1986.0988.119
- accession number
- 1986.0988
- catalog number
- 1986.0988.119
- Data Source
- National Museum of American History
-
Unisonic XL-111 Desktop Electronic Calculator
- Description
- This small, printing desktop electronic calculator has an array of nine digit keys with zero and decimal point keys below. On the right are four keys for arithmetic functions. Right of these are print, percentage, memory recall/memory clear, and clear entry/total keys. Above the keys are a print switch, a summation switch, and a constant switch. The power switch is on the right side.
- Behind the keyboard is a nine-digit display. Behind this is a paper tape and printing mechanism.
- A mark behind the display reads: Unisonic XL 111. A mark on the back reads in part: Unisonic Model No. XL-111. There is no indication that Unisonic is a registered trademark. It also reads in part: Serial No. 70713560 (/) Unisonic Products Corporation (/) Made in Hong Kong. A case on the right side of the bottom is designed to hold five rechargeable nickel-cadmium batteries. A jack for attaching to an AC adapter is at the back.
- The North American Foreign Trading Corporation of New York City, N.Y., first used the trademark Unisonic in 1968 for vacuum tubes, resistors and other electronic devices. In 1972 it extended the trademark to include calculators, receiving the registration in 1975.
- Compare other Unisonic electronic calculators, 1986.0988.003, 1986.0988.004, and 1986.0988.005.
- Location
- Currently not on view
- date made
- ca 1972-1975
- maker
- Unisonic Products Corporation
- ID Number
- 1986.0988.120
- accession number
- 1986.0988
- catalog number
- 1986.0988.120
- Data Source
- National Museum of American History
-
Sharp EL-206 Handheld Electronic Calculator
- Description
- This battery-operated handheld electronic calculator has a black and white plastic case and an array of twenty rectangular plastic keys. These include ten digit keys, a decimal point key, a % key, four arithmetic function keys, a clear/clear entry key, a memory key (for the total), a square root key, and a total key. Behind the keyboard is an eight-digit yellow LCD display. The on/off switch is behind the display on the right. A tag left of this reads: SHARP ELSI MATE (/) EL- 206.
- At the top of the back is a compartment for a nine volt battery. A sticker inside it reads: 83283314. Text below the compartment reads: ELECTRONIC CALCULATOR (/) EL-206. Further text reads: SHARP CORPORATION (/) MADE IN JAPAN BM. Two U.S. patents listed as protecting the device have numbers 3902169 and 3976994. The second patent relates to liquid crystal displays. It was issued in 1977 and assigned to Sharp.
- Compare 1986.088.315 (the EL-104). That calculator has an LED display and no memory.
- References:
- [Advertisement], Chicago Tribune, September 13, 1978, p. 10Y. The calculator is advertised as regularly priced at $9.95 and on sale for $6.97.
- [Advertisement], Los Angeles Times, November 9, 1978, p. R4. Calculator is on sale for $7.99.
- [Advertisement], Washington Post, August 22, 1979, p. C3. Calculator is selling for $9.77.
- Location
- Currently not on view
- date made
- 1978-1979
- maker
- Sharp Corporation
- ID Number
- 1986.0988.133
- accession number
- 1986.0988
- catalog number
- 1986.0988.133
- Data Source
- National Museum of American History
-
Sharp EL-218 Handheld Electronic Calculator
- Description
- This battery-operated handheld electronic calculator has a white plastic case with twenty-three rectangular gray plastic keys. These include ten digit keys, a decimal point key, a total key, four arithmetic function keys, a clear key, a clear entry key, three memory keys, a square root key, and a % key. The on/off switch is to the left on the top row of the keyboard. Behind the keys is an eight-digit LCD display. A tag behind this reads: SHARP (/) ELSI-MATE EL-218.
- Pushing along the top edge allows one to open the case, revealing a place for a nine-volt battery. A chip beneath the place for the battery reads: LI2071A (/) SHARP IC2 025. A mark on the back of the case reads in part: ELECTRONIC CALCULATOR (/) EL-218. Further text reads: NO 1V416574 (/) SHARP CORPORATION (/) MADE IN JAPAN BM.
- Reference:
- [Advertisement],
, September 30, 1981, p. K1. Sharp EL-218 selling for $6.00. - Location
- Currently not on view
- date made
- ca 1981
- maker
- Sharp Corporation
- ID Number
- 1986.0988.134
- accession number
- 1986.0988
- catalog number
- 1986.0988.134
- Data Source
- National Museum of American History
-
Rapidman 800 Handheld Electronic Calculator
- Description
- This Canadian-made handheld electronic calculator has a black plastic case and an array of sixteen square plastic keys. These include ten digit keys, a clear key, a decimal point key, and four arithmetic function keys. The “+” key also serves as a total key. The on/off switch is behind the keyboard. Behind it is an eight-digit red LED display. The decimal point in the display is fixed. A mark behind the display reads: RAPIDMAN (/) 800. Next to the display is an overflow indicator light. A jack for a power adapter is on the back edge.
- At the top of the back of the calculator is a compartment for a nine volt battery. Text on a gold-colored sticker below this gives operating instructions. A mark toward the bottom of the sticker reads: RAPID DATA (/) SYSTEMS & EQUIPMENT LTD. RAPIDMAN 800 (/) SERIAL NO. 237013 (/) PATENT PENDING Made in Canada.
- References:
- [Advertisement], Los Angeles Times, April 1, 1973, p. 76. Rapidman 800 on sale for $59.95.
- [Advertisement], New York Times, April 9, 1972, p. 49. The Rapidman 800 is described in detail. It cost $99.95.
- [Advertisement], New York Times, February 14, 1974, p. 52. Rapidman 800 advertised as on sale for $29.95, regularly $49.95.
- Terry Robards, “Mini-Calculator Shakeout: Competition Adds Up to Trouble for Investors,” New York Times, October 8, 1972, p. F4. The price of the Rapidman 800 calculator had been $99 a few months previously, was $84 at that time, and was about to fall to $75.
- Grace Lichtenstein, “New Calculators Catch Public’s Fancy,” New York Times, October 28, 1972, p. 33.
- Location
- Currently not on view
- date made
- 1972-1974
- maker
- Rapid Data Systems & Equipment
- ID Number
- 1986.0988.144
- catalog number
- 1986.0988.144
- accession number
- 1986.0988
- Data Source
- National Museum of American History
-
Radofin 8P Handheld Electronic Calculator
- Description
- This basic handheld electronic calculator has a black plastic case and nineteen oval indented plastic keys. These include ten digit keys, four arithmetic function keys, a % key, a total key, a decimal point key, a constant key, and a clear/clear entry key. At the left in the top row of keys is an on/off switch. Behind the keyboard is an eight-digit red LED display. Text at the top reads: Radofin. A jack for a power adapter is on the left side.
- The back of the calculator has a battery compartment for a nine volt battery. A sticker at the center of the back reads in part: Radofin (/) MODEL 8P ELECTRONIC CALCULATOR (/) DC 9 V 500mW 1 x 9V BATTERY. Further text reads: SERIAL NO 8P 26701 (/) RADOFIN ELECTRONICS LTD. HONG KONG.
- Compare 1986.0988.256 (Radofin1610).
- References:
- [Advertisement], Washington Post, August 14, 1975, p. MD11. Advertised as regularly priced at $19.97, on sale for $11.88.
- [Advertisement], Washington Post, September 25, 1975. Advertised as regularly priced at $14.88, on sale for $10.88.
- [Advertisement], Los Angeles Times, December 14, 1975, p. OC3. Advertised as regularly priced at $12.88, on sale for $9.88.
- Location
- Currently not on view
- date made
- 1975
- maker
- Radofin Electronics
- ID Number
- 1986.0988.146
- catalog number
- 1986.0988.146
- accession number
- 1986.0988
- Data Source
- National Museum of American History
-
Abbott Handheld Electronic Calculator
- Description
- This compact handheld electronic calculator has an array of ten white plastic digit keys; a white decimal point key; keys for the four arithmetic functions, percentage, and square roots; clear entry and clear keys; an equals key; a change sign key; and three memory keys. The on/off switch is in the top row of keys, at the left. Behind the keyboard is an eight-digit liquid crystal display. A mark above the keyboard reads: ABBOTT.
- Space for two small 1.5 volt batteries is on the left side of the back. A silver-colored sticker attached to the back reads: LIQUID CRYSTAL CALCULATOR (/) 3 x 1.5V SILVER OXIDE BATTERY (/) 0.0004W (/) NO. 28075 MADE IN JAPAN.
- The typeface used for the mark ABBOTT on this calculator is the same as that used in products of the pharmaceutical company Abbott Laboratories in this period.
- Compare APF MARK 1910.
- Location
- Currently not on view
- date made
- ca 1980
- ID Number
- 1986.0988.155
- catalog number
- 1986.0988.155
- accession number
- 1986.0988
- Data Source
- National Museum of American History
-
Bohsei Model 1000 Handheld Electronic Calculator
- Description
- This handheld electronic calculator has a light gray plastic case. It has ten digit keys, a decimal point key, four arithmetic function keys, and a total key. The keyboard has special blue squares surrounding the keys for pi, square root, reciprocal, percentage, and clear entry/clear. The four memory keys also have a blue background. The eight-digit green fluorescent display is behind the keyboard. A mark at the top left reads: BOHSEI. A mark immediately above the display reads: MODEL 1000. The on/off swith is on the right side.
- The case has a compartment for AA two batteries at the back. A gold-colored paper tag reads: Serial No. (/) 932770 (/) MADE IN HONG KONG. The calculator has a socket for an adapter on the top, but no adapter in this example.
- Newspaper advertisements indicate that a printing desktop electronic calculator was sold under the Bohsei name in 1977. A February 1978 advertisement in the Chicago Tribune indicates that the Bohsei Model 1000 was then on sale at a special price of $8.88.
- References:
- Chicago Tribune, November 24, 1977, p. T12.
- Chicago Tribune, February 25, 1978, p. 8.
- Location
- Currently not on view
- date made
- ca 1978
- ID Number
- 1986.0988.158
- catalog number
- 1986.0988.158
- accession number
- 1986.0988
- Data Source
- National Museum of American History
-
Unisonic LC 270 Handheld Electronic Calculator
- Description
- This handheld electronic calculator has a metal case and twenty-four rectangular plastic keys. These include ten digit keys, a decimal point key, a total key, four arithmetic function keys, three memory keys, a percentage key, a square root key, an off key, an on/clear key, and a clear entry key. Behind the keyboard is an eight-digit LCD display. A mark below the keyboard reads: Unisonic LC 270.
- A mark printed on the back reads: Unisonic LC 270 (/) 1.5V BATTERY x 2 PCS. (/) EVERREADY BATTERY NO. 189 (/) SERIAL NO. 5673107 (/) MADE IN TAIWAN R. O. C.
- For information about Unisonic, see 1986.0988.371.
- References:
- [Advertisement], Fort Hood Sentinel, December 17, 1981, p. 3A. Unisonic LC270 and Unisonic LC222 calculators advertised as on sale for $7.88, regularly $12.95.
- [Advertisement], Tonawanda NY Evening News, April 14, 1982, p. 5. Both Unisonic LC270 and Unisonic LC222 calculators on sale for $6.96, regularly $8.99.
- Location
- Currently not on view
- date made
- ca 1981
- maker
- Unisonic
- ID Number
- 1986.0988.160
- catalog number
- 1986.0988.160
- accession number
- 1986.0988
- Data Source
- National Museum of American History
-
Unitrex CB-8SL Handheld Electronic Calculator
- Description
- This handheld electronic calculator is designed to fit into a checkbook (this example has no wallet). It has a plastic front, circuit board, and keys. The twenty-three rectangular keys include ten digit keys, a decimal point key (that can also serve as a memory exchange key), a percentage key (that can serve as a square root key), a total key, four arithmetic function keys (one of which can also serve as a squaring key and another as an inverse key), four memory keys, a clear entry/clear key, and a function/clear function key. The on/off switch is left of the three keys in the top row. There is space for six AAA batteries but no battery jack.
- A sticker on the back of the calculator circuit board reads in part: UNITREX MODEL CB-8SL ELECTRONIC CALCULATOR. It also reads in part: SERIAL NO. 94456 (/) HONG KONG
- Compare Unitrex CB-8SL (1986.098.161) and Novus Attache (1986.0988.227).
- References:
- [Advertisement], Eastern Progress, April 28, 1977, p. 8. Unitrex CB-8SL on sale for $17.99, regularly $19.99.
- [Advertisement], Sedalia Democrat [Sedalia, Missouri], October 26, 1977, p. 36. Unitrex slide rule checkbook calculator selling for $9.99.
- Location
- Currently not on view
- date made
- ca 1977
- maker
- Eiko Business Machine Company
- ID Number
- 1986.0988.161
- catalog number
- 1986.0988.161
- accession number
- 1986.0988
- Data Source
- National Museum of American History
-
APF Mark 30 Handheld Electronic Calculator
- Description
- This handheld electronic calculator has an array of ten digit keys and a decimal point key on the left with an array of function keys on the right. The main function keys are clear entry/clear, addition, subtraction, multiplication, division, percentage, and switching of the entered number and the result. Pressing a red F key changes these to memory keys, a square root key, an inverse key, and a squared key. The device has an eight-digit display and a compartment for a battery behind this.
- A label stuck to the back of the calculator reads in part: aPF mark 30 (/) SLIDE RULE CALCULATOR. It also reads: MARK 30 (/) Model No. Further text reads: R-21114 (/) Serial No. At the bottom of this label are the words: APF ELECTRONICS INC. (/) NEW YORK, N.Y. 10022 (/) MADE IN U.S.A. A mark on the inside of the lid for the battery compartment reads: JAPAN (/) K-140032.
- A June 11, 1975, advertisement in the New York TImes claims that the Mark 30 originally sold for $69.95 and was on sale at Macy's for $25.00. An October 1975 advertisement in the New York Times lists the APF Mark 30 as selling for $24.95, with an additional $3.95 for the adapter. An ad in the January 4, 1976, Chicago Tribune gives a price of $24.99. The price of the adapter is not listed. Advertisements for the calculator appeared in the Los Angeles Times in 1975 and 1976.
- References:
- Chicago Tribune January 4, 1976, p. 12.
- New York Times, June 11, 1975, p. 6.
- New York Times, October 23, 1975, p. 20.
- Location
- Currently not on view
- date made
- ca 1975
- maker
- APF Electronics
- ID Number
- 1986.0988.167
- catalog number
- 1986.0988.167
- accession number
- 1986.0988
- Data Source
- National Museum of American History
-
APF Mark 40 Handheld Electronic Calculator
- Description
- This handheld electronic calculator has a light tan plastic case and a gray plastic keyboard. It has an array of eighteen rectangular keys with oval corners. These include ten digit keys and a decimal point key, keys for the four arithmetic functions, an equals/constant key, a percentage key, and a clear entry/clear key. The eight-digit LED display is behind the keyboard. The battery compartment opens from the back at the top. The device has two plastic feet. The socket for the adapter is on the right.
- A mark on the front reads: aPF MARK 40. The paper tag on the back reads: aPF ELECTRONICS, INC. (/) MODEL NO: MARK 40 (/) D.C. 9.0 VOLTS (/) CAUTION: Use only model 710 (/) or 751S adaptor (optional) to (/) operate on A. C. (/) SERIAL No: R-0205395 (/) MADE IN JAPAN.
- According to an advertisement in the May 30, 1975, Los Angeles Times, the APF Mark 40 sold for $13.88, with an additional $3.95 for the adaptor. In July, 1976, it was advertised there as selling at a sale price of $5.99 with an additional $3.99 for the adapter. The January 4, 1976, Chicago Tribune gives a regular price of $12.99, a sale price of $9.97 and a price for the adapter of $3.99.
- Compare 1986.0988.329 (a Montgomery Ward P90).
- References:
- Chicago Tribune, January 4, 1976, p. 12
- Los Angeles Times, May 30, 1975, p. B23.
- Los Angeles Times, July 8, 1976, p. B13.
- Location
- Currently not on view
- date made
- ca 1975
- maker
- APF Electronics
- ID Number
- 1986.0988.169
- catalog number
- 1986.0988.169
- accession number
- 1986.0988
- Data Source
- National Museum of American History
-
APF Mark 62 Handheld Electronic Calculator
- Description
- This compact handheld electronic calculator has an array of ten white digit keys, a white decimal point key, and eight orange function keys. These are four arithmetic function keys, an equals/k key, a percentage key, a square root key, and a clear entry/clear key. The red LED display appears to have eight digits. A mark at the back top reads: aPF MARK 62.
- A metal connector for an adopter is on the right side. The back has the cover for the battery case, a silver paper sticker, and two rubber feet. A mark on the sticker reads: aPF ELECTRONICS, INC. (/) MODEL NO. MARK 62 (/) D.C. 9.0 VOLTS (/) CAUTION: Use only optional (/) A. C. adaptor model 710 or (/) 751S to operate on A. C. (/) SERIAL NO: H62-23524 (/) 50321 MADE IN HONG KONG.
- No advertisement found.
- Location
- Currently not on view
- date made
- ca 1977
- maker
- APF Electronics
- ID Number
- 1986.0988.173
- catalog number
- 1986.0988.173
- accession number
- 1986.0988
- Data Source
- National Museum of American History
-
APF Mark 65R Handheld Electronic Calculator
- Description
- This handheld electronic calculator has twenty-four indented square plastic keys. These include ten white digit keys and an eleventh white decimal point key; and keys for the four arithmetic functions as well as percentage, square root, clear entry/clear, and equals keys. Five orange memory keys are in the rightmost column. The on/off switch is above these keys on the left, and the nine-digit fluorescent display is behind this. A mark below the display reads: aPF rechargeable MARK 65r. The hole for the recharger/adapter is on the top edge.
- The black plastic case has two rubber feet at the top. A silver-colored paper sticker below this reads: aPF ELECTRONICS, INC. (/) MODEL NO. MARK 65r (/) D.C. 4.5 VOLTS (/) CAUTION. Use only A.C. adaptor/recharger (/) model 751S to operate on A.C. (/) SERIAL NO. H65r-024822 (/) 7545.005 HONG KONG. Below this is the cover for the sealed battery case. A black paper sticker on this reads: THIS UNIT IS EQUIPPED WITH (/) RECHARGEABLE NICAD BATTERIES. (/) BATTERY COVER IS SEALED. (/) DO NOT ATTEMPT TO OPEN.
- Ball and Flamm mention a 1977 advertisement for this calculator which gave a price of $18.95.
- Compare the Sears F85 (1986.0988.182).
- Reference:
- Guy Ball and Bruce Flamm, The Complete Collector's Guide to Pocket Calculators, Tustin CA: Wilson/Barnett, 1997, p. 30.
- Location
- Currently not on view
- date made
- ca 1977
- maker
- APF Electronics
- ID Number
- 1986.0988.174
- accession number
- 1986.0988
- catalog number
- 1986.0988.174
- Data Source
- National Museum of American History
-
Sanyo ICC-807D Handheld Electronic Calculator
- Description
- This hefty handheld electronic calculator has a metal case and eighteen indented square plastic keys. These include ten digit keys, a decimal point key, four arithmetic function keys, a clear display key (CK), a clear all key (CA), and an arrow key pushed to show digits not indicated on the display (the display shows eight digits in the result, but calculations are to sixteen digits). The addition and subtraction keys also serve as total /difference keys.
- The keyboard also has a switch that may be set at 0, 2, or 4 to indicate the placement of the decimal point. A mark below it reads: DECIMAL P. Behind the keyboard is a light that indicates when the battery is low. A tag next to it reads: SANYO. Behind this is the eight-digit gas discharge display. An on/off switch is on the right side and a jack for a power adapter at the back edge.
- A tag on the back of the calculator reads: SANYO MODEL ICC-807D (/) ELECTRONIC CALCULATOR (/) INPUT DC 7.5 V (/) DC 7.5V, DC 2.5W (/) SERIAL NO. 77123492 T (/) SANYO ELECTRIC CO., LTD. MADE IN JAPAN.
- Compare 1986.0988.177.
- References:
- A manual is online at the wass.net website, accessed October 9, 2014.
- The calculator.org website dates this calculator to 1972-1973. The epocalc.net website dates it to 1971. No advertisements found.
- Location
- Currently not on view
- date made
- ca 1972
- maker
- Sanyo Electric Company
- ID Number
- 1986.0988.178
- accession number
- 1986.0988
- catalog number
- 1986.0988.178
- Data Source
- National Museum of American History
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