Computers & Business Machines - Overview
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. 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. Other artifacts range from personal computers to ENIAC, the Altair, and the Osborne 1. 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
"Computers & Business Machines - Overview" showing 7 items.
Control Panel, Bell Telephone Laboratories Model 5 Computer
- Description
- This control panel is a small part of a very large programmable calculator built by Bell Telephone Laboratories of New York for the U.S. Army. By the mid-twentieth century, improving communications required complicated calculations. In order to improve the clarity and range of long distance voice signals, George Stibitz, a research mathematician at Bell Labs, needed to do calculations using complex numbers. Stibitz and Bell Labs engineer Sam Williams completed a machine for this purpose in 1939–it later was called the Bell Labs Model I. With the outbreak of World War II, Stibitz and Bell Labs turned their attention to calculations related to the aiming and firing of antiaircraft guns. Stibitz proposed a new series of relay calculators that could be programmed by paper tape to do more than one kind of calculation. The BTL Model 5. was the result. The machine consisted of 27 standard telephone relay racks and assorted other equipment. It had over 9000 relays, a memory capacity of 30 7-digit decimal numbers, and took about a second to multiply 2 numbers together. Two copies of the machine were built. This one was used by the U.S. Army for ballistics work at Aberdeen, Maryland and then at Fort Bliss, Texas. Machines that used relays were reliable, but slower than those using vacuum tubes, and soon gave way to electronic computers.
- Location
- Currently on loan
- Date made
- 1947
- maker
- Bell Telephone Laboratories
- ID Number
- 1987.0821.01
- accession number
- 1987.0821
- catalog number
- 1987.0821.01
- Data Source
- National Museum of American History, Kenneth E. Behring Center
Nanoseconds Associated with Grace Hopper
- Description
- This bundle consists of about one hundred pieces of plastic-coated wire, each about 30 cm (11.8 in) long. Each piece of wire represents the distance an electrical signal travels in a nanosecond, one billionth of a second. Grace Murray Hopper (1906–1992), a mathematician who became a naval officer and computer scientist during World War II, started distributing these wire "nanoseconds" in the late 1960s in order to demonstrate how designing smaller components would produce faster computers.
- The "nanoseconds" in this bundle were among those Hopper brought with her to hand out to Smithsonian docents at a March 1985 lecture at NMAH. Later, as components shrank and computer speeds increased, Hopper used grains of pepper to represent the distance electricity traveled in a picosecond, one trillionth of a second (one thousandth of a nanosecond).
- Reference: Kathleen Broome Williams, Grace Hopper: Admiral of the Cyber Sea, Annapolis, MD: Naval Institute Press, 2004.
- Location
- Currently not on view
- date made
- 1985
- distributor
- Hopper, Grace Murray
- ID Number
- 1985.3088.01
- catalog number
- 1985.3088.01
- nonaccession number
- 1985.3088
- Data Source
- National Museum of American History, Kenneth E. Behring Center
Badge from Cruft Laboratory of Harvard University
- Description
- This metal badge reads "Cruft Laboratory, Staff No. 62, Harvard University", and was donated to the Smithsonian by Grace Murray Hopper (1906–1992). Hopper had joined the United States Naval Reserves in December 1943 and attended the Naval Reserve Midshipman’s School for Women through June 1944. She was then posted to the U.S. Navy’s Computation project that was housed at the Cruft Laboratory.
- Hopper had a PhD in mathematics (Yale 1934) and her assignment was to write computer code for the Mark I computer, formally known as the Automatic Sequence Controlled Calculator. Hopper continued working at the Harvard Computational Laboratory until 1949 although she, along with other women in the Naval Reserve, had been released from active duty in 1946.
- Location
- Currently not on view
- date made
- ca 1944
- ID Number
- 1989.0093.01
- accession number
- 1989.0093
- catalog number
- 1989.0093.01
- Data Source
- National Museum of American History, Kenneth E. Behring Center
Thomas Arithmometer
- Description
- This is the oldest surviving example of the type of stepped drum calculating machine constructed under patents obtained by the Frenchman Charles Xavier Thomas of the French town of Colmar in 1820. Machines that could do arithmetic automatically were built as mechanical marvels in the 1600s on the design of mathematicians such as Blaise Pascal and Gottfried Leibniz. However, it was only with the introduction and improvement of the machine of Thomas that calculating machines became part of the world of practical calculation. The instrument was made for Thomas by the Parisian mechanician and clockmaker Devrine. Thomas arithmometers, as the machines were called, became the first commercially successful calculating machines.
- The brass machine fits snugly in a wooden case covered with red leather and lined with green velvet. It has three levers that are moved back to enter digits on brass stepped drums. A fourth lever, to the left of these, is labeled Multiplication, and used to determine the number of times the stepped drums rotate. Hence in this early machine, Thomas attempted direct multiplication by a single digit. This feature would not be successfully used in calculating machines until the late 19th century.
- In back of the digit levers is a movable carriage with a row of six pairs of windows. Beneath each pair is a button. The levers are labeled: Unités, Dixaines, and Centaines. The pairs of windows are labeled: Unité, Dixaine, Centaine, Mille, Dix Mille, and Cent Mille.
- Beneath each window is a numeral wheel. Two sets of digits are marked on each wheel, one in black and the other in red. Shifting a lever on the right of the carriage to “add e multiplication” opens six windows to show in black digits the result of addition and multiplication problems. In the other positions, six windows open to show in red digits the result of division and subtraction problems. Beneath the windows are thumbscrews for zeroing the result digits one at a time. There is no revolution register.
- Pulling a red ribbon operates the machine. Pulling a shorter ribbon attached to the front assists in removing it from the case. Later Thomas machines would be crank-operated. The lid of the case has a brass handle, lock, and key. Part of the right side of the case turns down to allow for the motion of the carriage.
- A mark on the left of the levers reads: Arithmomètre (/) du Chr. Thomas de Colmar (/) Par Brevet d’invention (/) Devrine fecit. A mark on a button at the front of the machine reads: Régulateur. A mark on the top of the lid reads: ARITHMOMÊTRE (/) De MR. LE CHER THOMAS DE COLMAR.
- The machine is not identical to that shown in the drawings of Thomas’s 1820 patent. It resembles the drawings made in 1821 for a report by Hoyau published in 1822.
- References:
- Stephen Johnson, “Making the Arithmometer Count,” Bulletin of the Scientific Instrument Society, No. 52, 1997, 12–21.
- “Rapport fait par M. Francoueur. . .,” Bulletin de la Société d'Encouragement pour l’Industrie Nationale, 21, 1822, pp. 33–36.
- Charles-Xavier Thomas, “1420,” 18 Novembre 1820. This is the number of Thomas’s 1820 French patent.
- Hoyau, “Description d’une machine à calculer nommée Arithmomètre. . . ,” Bulletin de la Société d'Encouragement pour l’Industrie Nationale, 21, 1822, pp. 355–365.
- Location
- Currently not on view
- date made
- ca 1820
- patentee
- Thomas, Charles Xavier
- maker
- Thomas, Charles Xavier
- ID Number
- 1987.0731.02
- catalog number
- 326649
- accession number
- 1987.0731
- Data Source
- National Museum of American History, Kenneth E. Behring Center
Hollerith Tabulating Machine
- Description
- During the 1880s the engineer Herman Hollerith devised a set of machines for compiling data from the United States Census. Hollerith's tabulating system included a punch for entering data about each person onto a blank card, a tabulator for reading the cards and summing up information, and a sorting box for sorting the cards for further analysis. The tabulator is shown at the center in the photograph.
- Hollerith's tabulating system won a gold medal at the 1889 World's Fair in Paris, and was used successfully the next year to count the results of the 1890 Census. His inventions formed the starting point of a company that would become IBM.
- Location
- Currently not on view
- Date made
- 1890
- 1899
- 1889
- maker
- Hollerith, Herman
- ID Number
- MA*312895
- accession number
- 171118
- catalog number
- 312895
- Data Source
- National Museum of American History, Kenneth E. Behring Center
Ritty Model 1 Cash Register, Possibly a Replica
- Description
- After the Civil War, as American cities and businesses grew, business owners increasingly hired strangers to assist customers. At the time, it was all too easy for clerks and barkeepers to keep part of the money they received. The cash register, invented by the Ritty brothers of Dayton, Ohio, had a large display to indicate the sums customers paid. It also had a locked compartment that tallied total receipts. This is the Rittys' first machine, or an early replica of it. It was the basis for a commercial product called "Ritty's Incorruptible Cashier."
- By 1884 the Rittys were out of business, but their patents were purchased by the National Cash Register Company. NCR made and sold much improved cash registers. By 1904, they were ready to convey the history of their company by showing this model at the St. Louis World's Fair. NCR went on to successfully make not only cash registers and accounting machines but electronic computers.
- Location
- Currently not on view
- Date made
- 1904
- date made
- by 1904
- maker
- National Cash Register Company
- ID Number
- MA*316700
- accession number
- 225455
- catalog number
- 316700
- Data Source
- National Museum of American History, Kenneth E. Behring Center
National Cash Register, Class 51
- Description
- In the 1950s Americans increasingly bought groceries in supermarkets, which served large numbers of customers. Consumers selected their own goods, and took them to a clerk who rang up sales. To make transactions as efficient as possible, the National Cash Register Company introduced machines that dispensed coins automatically, avoiding time and errors associated with making change. This change-making cash register went on the market in 1954, with a new model in 1958. This example was given to the Smithsonian by NCR in 1959, on the occasion of the seventy-fifth anniversary of the company.
- Reference:
- Accession file.
- date made
- 1959
- maker
- National Cash Register Company
- ID Number
- MA*316702
- accession number
- 225455
- catalog number
- 316702
- Data Source
- National Museum of American History, Kenneth E. Behring Center