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Burroughs Corporation
The Burroughs Corporation was a major American manufacturer of business equipment. The company was founded in 1886 as the American Arithmometer Company by William Seward Burroughs I, William Seward Burroughs. The company's history paralleled many of the major developments in history of computing, computing. At its start, it produced mechanical adding machines, and later moved into programmable ledgers and then computers. It was one of the largest producers of mainframe computers in the world, also producing related equipment including typewriters and Printer (computing), printers. In the 1960s, the company introduced a range of mainframe computers that were well regarded for their performance running high level languages. These formed the core of the company's business into the 1970s. At that time the emergence of superminicomputers and the dominance of the IBM System/360 and 370 at the high end led to shrinking markets, and in 1986 the company purchased former competitor Sperry C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unisys
Unisys Corporation is a global technology solutions company founded in 1986 and headquartered in Blue Bell, Pennsylvania. The company provides cloud, AI, digital workplace, logistics, and enterprise computing services. History Founding Unisys’ history dates back to 1873 with E. Remington & Sons and the introduction of the first commercially viable typewriter to use the QWERTY keyboard layout. Over a hundred years later, the company became known as Unisys in 1986 through the merger of Mainframe computer, mainframe corporations Sperry Corporation, Sperry and Burroughs Corporation, Burroughs, with Burroughs buying Sperry for $4.8 billion. The new company's name was chosen from over 31,000 submissions in an internal competition when Christian Machen submitted the word "Unisys", which was composed of parts of the words "united", "information", and "systems". The merger was the largest in the computer industry at the time and made Unisys the second-largest computer company wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Missouri
Missouri (''see #Etymology and pronunciation, pronunciation'') is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Ranking List of U.S. states and territories by area, 21st in land area, it borders Iowa to the north, Illinois, Kentucky and Tennessee to the east, Arkansas to the south and Oklahoma, Kansas, and Nebraska to the west. In the south are the Ozarks, a forested highland, providing timber, minerals, and recreation. At 1.5 billion years old, the St. Francois Mountains are among the oldest in the world. The Missouri River, after which the state is named, flows through the center and into the Mississippi River, which makes up the eastern border. With over six million residents, it is the List of U.S. states and territories by population, 19th-most populous state of the country. The largest urban areas are St. Louis, Kansas City, Missouri, Kansas City, Springfield, Missouri, Springfield, and Columbia, Missouri, Columbia. The Cap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pasadena, California
Pasadena ( ) is a city in Los Angeles County, California, United States, northeast of downtown Los Angeles. It is the most populous city and the primary cultural center of the San Gabriel Valley. Old Pasadena is the city's original commercial district. Its population was 138,699 at the 2020 census, making it the 45th-largest city in California and the ninth-largest in Los Angeles County. Pasadena was incorporated on June 19, 1886, 36 years after the city of Los Angeles but still one of the first in what is now Los Angeles County. Pasadena is home to many scientific, educational, and cultural institutions, including the California Institute of Technology, Pasadena City College, Kaiser Permanente Bernard J. Tyson School of Medicine, Fuller Theological Seminary, Theosophical Society, Parsons Corporation, Art Center College of Design, the Planetary Society, Pasadena Playhouse, the Ambassador Auditorium, the Norton Simon Museum, and the USC Pacific Asia Museum. Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ElectroData Corporation
Sibyl Rock with an ElectroData Datatron computer in 1955 The ElectroData Corporation was a computer company located in Pasadena, California. ElectroData originated as a part of Consolidated Electrodynamics Corporation (CEC), which manufactured scientific equipment. Clifford Berry and Sibyl M. Rock developed an analog computer to process the output of CEC's mass spectrometer. Berry then urged CEC to develop a digital computer as a follow-on. In 1951 CEC enlisted Harry Huskey, who managed the development of the SWAC computer on the project. In May 1952, CEC pre-announced the "CEC 30-201" computer, a vacuum tube computer with a magnetic-drum memory. That same year CEC reorganized computer development into a separate Computer Division. In 1954 the division was spun off into a separate public company named ElectroData. In 1954 the first model of the computer, now named the Datatron 203 shipped to the Jet Propulsion Laboratory in Pasadena. The purchase price was $125,000. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital Computer
A computer is a machine that can be programmed to automatically carry out sequences of arithmetic or logical operations (''computation''). Modern digital electronic computers can perform generic sets of operations known as ''programs'', which enable computers to perform a wide range of tasks. The term computer system may refer to a nominally complete computer that includes the hardware, operating system, software, and peripheral equipment needed and used for full operation; or to a group of computers that are linked and function together, such as a computer network or computer cluster. A broad range of industrial and consumer products use computers as control systems, including simple special-purpose devices like microwave ovens and remote controls, and factory devices like industrial robots. Computers are at the core of general-purpose devices such as personal computers and mobile devices such as smartphones. Computers power the Internet, which links billions of compute ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Line Printer
A line printer Printer (computing), prints one entire line of text before advancing to another line. Most early line printers were printer (computing)#Impact printers, impact printers. Line printers are mostly associated with unit record equipment and the early days of digital computing, but the technology is still in use. Print speeds of 600 lines per minute (approximately 10 pages per minute) were achieved in the 1950s, later increasing to as much as 1200 lpm. Line printers print a complete line at a time and have speeds in the range of 150 to 2500 lines per minute. Some types of impact line printers are #Drum printer, drum printers, #Band printer, band-printers, and #Chain printer, chain printers. Non-impact technologies have also been used, e.g., thermal printing, thermal line printers were popular in the 1970s and 1980s, some inkjet and laser printers produce output a line or a page at a time. Designs Many impact printers, such as the daisywheel printer and dot matri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetic Stripe Card
The term digital card can refer to a physical item, such as a memory card on a camera, or, increasingly since 2017, to the digital content hosted as a virtual card or cloud card, as a digital virtual representation of a physical card. They share a common purpose: identity management, credit card, debit card or driver's license. A non-physical digital card, unlike a #Magnetic stripe card, magnetic stripe card, can Emulator, emulate (imitate) any kind of card. A smartphone or smartwatch can store content from the card issuer; discount offers and news updates can be transmitted wirelessly, via Internet. These virtual cards are used in very high volumes by the mass transit sector, replacing paper-based tickets and the earlier magnetic strip cards. History Magnetic recording on steel tape and wire was invented by Valdemar Poulsen in Denmark around 1900 for recording audio. In the 1950s, magnetic recording of digital computer data on plastic tape coated with iron oxide was invente ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trial Balance
A trial balance is an internal financial statement that lists the adjusted closing balances of all the general ledger accounts (both revenue and capital) contained in the ledger of a business as at a specific date. This list will contain the name of each nominal ledger account in the order of liquidity and the value of that nominal ledger balance. Each nominal ledger account will hold either a debit balance or a credit balance. The debit balance values will be listed in the debit column of the trial balance and the credit value balance will be listed in the credit column. The trading profit and loss statement and balance sheet and other financial reports can then be produced using the ledger accounts listed on the same balance. History The first published description of the process is found in Luca Pacioli's 1494 work '' Summa de arithmetica'', in the section titled ''Particularis de Computis et Scripturis''. Although he did not use the term, he essentially prescribed a techniqu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General Ledger
In bookkeeping, a general ledger is a bookkeeping ledger in which accounting data are posted from General journal, journals and aggregated from subledgers, such as accounts payable, accounts receivable, cash management, fixed assets, purchasing and projects. A general ledger may be maintained on paper, on a computer, or in the cloud. A ledger account is created for each account in the chart of accounts for an organization and is classified into account categories, such as income, expense, assets, liabilities, and equity; the collection of all these accounts is known as the general ledger. The general ledger holds financial and non-financial data for an organization. Each account in the general ledger consists of one or more pages. It includes details such as the date of sale, invoice number, customer details, and the amount due. This ledger helps businesses track outstanding receivables and manage cash flow efficiently. An organization's statement of financial position and the i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nixie Tube
A Nixie tube ( ), or cold cathode display, is an electronics, electronic device used for display device, displaying numerals or other information using glow discharge. The glass tube contains a wire-mesh anode and multiple cathodes, shaped like Hindu–Arabic numeral system, numerals or other symbols. Applying power to one cathode surrounds it with an orange glow discharge. The tube is filled with a gas at low pressure, usually mostly neon and a small amount of argon, in a Penning mixture. In later nixies, in order to extend the usable life of the device, a tiny amount of mercury (element), mercury was added to reduce cathode poisoning and sputtering. Although it resembles a vacuum tube in appearance, its operation does not depend on thermionic emission of electrons from a hot cathode. It is hence a cold cathode tube (a form of gas-filled tube), and is a variant of the neon lamp. Such tubes rarely exceed even under the most severe of operating conditions in a room at ambient te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comptometer
The Comptometer was the first commercially successful key-driven mechanical calculator, patented in the United States by Dorr Felt in 1887. A key-driven calculator is extremely fast because each key adds or subtracts its value to the accumulator as soon as it is pressed and a skilled operator can enter all of the digits of a number simultaneously, using as many fingers as required, making them sometimes faster to use than electronic calculators. Consequently, in specialized applications, comptometers remained in use in limited numbers into the early 1990s, but with the exception of museum pieces, they have all now been superseded by electronic calculators and computers. Manufactured without interruption from 1887 to the mid-1970s, it was constantly improved. The mechanical versions were made faster and more reliable, then a line of electro-mechanical models was added in the 1930s. It was the first mechanical calculator to receive an all-electronic calculator engine in 1961, wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dashpot
A dashpot, also known as a damper, is a mechanical device that resists motion via viscous damping. The resulting force is proportional to the velocity, but acts in the opposite direction, slowing the motion and absorbing energy. It is commonly used in conjunction with a Spring (device), spring. Types The two most common types of dashpots are linear and rotary. Linear dashpot Linear dashpots — or linear dampers — are used to exert a force opposite to a translation movement. They are generally specified by stroke (amount of linear displacement) and damping coefficient (force per velocity). Rotary dashpot Similarly, rotary dashpots will tend to oppose any torque applied to them, in an amount proportional to their rotational speed. Their damping coefficients will usually be specified by torque per angular velocity. One can distinguish two kinds of viscous rotary dashpots: * Vane dashpots which have a limited angular range but provide a significant damping torque. The damp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
