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IBM 6400 Series
The IBM 6400 Accounting Machine is a series of four calculating and accounting machines produced by the IBM Electric Typewriter (ET) division in 1962. It was announced in January 1963 and was sold to perform what IBM referred to as BICARSA, which stood for billing, inventory control, accounts receivable and sales analysis. Characteristics The output for each machine is facilitated using a keyboardless IBM Selectric typewriter mounted above the CPU. Programming is done by a control panel. Calculations are done by electronics (SMS) and program steps are controlled by relays. Optional input/output devices include a card reader and punch, a paper tape reader and punch, and a magnetic card reader. The magnetic card reader uses large cards (30 cm x 35 cm) where the front of the card is used as a printer ledger while the same information is stored on a 4-track magnetic strip (that IBM describes as magnetic tape) that runs across the bottom of the back of the card. IBM a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IBM 6400
The IBM 6400 family of line matrix printers were modern highspeed business computer printers introduced by IBM in 1995. These printers were designed for use on a variety IBM systems including Mainframe computer, mainframes, Server (computing), servers, and PCs. Configuration The 6400 was available in a choice of open pedestal (to minimize floor size requirements) or an enclosed cabinet (for quiet operation). Three models existed, with print speeds of 500, 1000 or 1500 lines/minute. When configured with the appropriate graphics option, it could print mailing bar codes "certified by the U.S. Postal service. Twelve configurations were commonly sold by IBM. Rebadged These printers were manufactured by Printronix Corp and rebranded for IBM. All internal parts had the Printronix Logo and/or artwork. Although they once did, IBM no longer manufactures printers. One of their old printer divisions became Lexmark The other became the IBM Printing Systems Division, which was subsequently sol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IBM Selectric Typewriter
The IBM Selectric typewriter was a highly successful line of electric typewriters introduced by IBM on 31 July 1961. Instead of the "basket" of individual typebars that swung up to strike the ribbon and page in a typical typewriter of the period, the Selectric had an "element" (frequently called a "typeball", or less formally, a "golf ball") that rotated and pivoted to the correct position before striking the paper. The element could be easily interchanged to use different fonts within the same document typed on the same typewriter, resurrecting a capability which had been pioneered by typewriters such as the Hammond and Blickensderfer in the late 19th century. The Selectric also replaced the traditional typewriter's horizontally-moving carriage with a roller (platen) that turned to advance the paper vertically, while the typeball and ribbon mechanism moved horizontally across the paper. The Selectric mechanism was notable for using internal mechanical binary coding and two me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plugboard
A plugboard or control panel (the term used depends on the application area) is an array of jacks or sockets (often called hubs) into which patch cords can be inserted to complete an electrical circuit. Control panels are sometimes used to direct the operation of unit record equipment, cipher machines, and early computers. Unit record equipment Main article: Unit record equipment The earliest machines were hardwired for specific applications. Control panels were introduced in 1906 for the Hollerith Type 1 Tabulatorphoto of Type 3 with built-in control panel here. Removable control panels were introduced with the Hollerith ( IBM) type 3-S tabulator in the 1920s. Applications then could be wired on separate control panels, and inserted into tabulators as needed. Removable control panels came to be used in all unit record machines where the machines use for different applications required rewiring. IBM removable control panels ranged in size from 6 1/4" by 10 3/4" (for ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Standard Modular System
The Standard Modular System (SMS) is a system of standard transistorized circuit boards and mounting racks developed by IBM in the late 1950s, originally for the IBM 7030 Stretch. They were used throughout IBM's second-generation computers, peripherals, the IBM 700/7000 series, 7000 series, the IBM 1400 series, 1400 series, and the IBM 1620, 1620. SMS was superseded by Solid Logic Technology (SLT) introduced with System/360 in 1964, however they remained in use with legacy systems through the 1970s. Overview Many IBM peripheral devices that are part of System/360, but were adapted from second-generation designs, continued to use SMS circuitry instead of the newer SLT. These included the IBM 2400, 240x-series tape drives and controllers, the IBM 2540, 2540 card reader/punch and IBM 1403, 1403N1 printer, and the IBM 2821 Control Unit, 2821 Integrated Control Unit for the 1403 and 2540. A few SMS cards used in System/360 peripheral devices even have SLT-type hybrid ICs mounted on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Relay
A relay Electromechanical relay schematic showing a control coil, four pairs of normally open and one pair of normally closed contacts An automotive-style miniature relay with the dust cover taken off A relay is an electrically operated switch. It consists of a set of input terminals for a single or multiple control signals, and a set of operating contact terminals. The switch may have any number of contacts in multiple contact forms, such as make contacts, break contacts, or combinations thereof. Relays are used where it is necessary to control a circuit by an independent low-power signal, or where several circuits must be controlled by one signal. Relays were first used in long-distance telegraph circuits as signal repeaters: they refresh the signal coming in from one circuit by transmitting it on another circuit. Relays were used extensively in telephone exchanges and early computers to perform logical operations. The traditional form of a relay uses an electromagnet to c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetic Strip
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, or Debit card. A non-physical digital card, unlike a Magnetic stripe card can can emulate (imitate) any kind of card. Other common uses include loyalty card and health insurance card; physical driver's license and Social Security card are still mandated by some government agencies. 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 earlier MagStrip cards. History Magnetic recording on steel tape and wire was invented by Valdemar Poulsen in Denmark around 1900 for recording aud ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calculator
An electronic calculator is typically a portable electronic device used to perform calculations, ranging from basic arithmetic to complex mathematics. The first solid-state electronic calculator was created in the early 1960s. Pocket-sized devices became available in the 1970s, especially after the Intel 4004, the first microprocessor, was developed by Intel for the Japanese calculator company Busicom. Modern electronic calculators vary from cheap, give-away, credit-card-sized models to sturdy desktop models with built-in printers. They became popular in the mid-1970s as the incorporation of integrated circuits reduced their size and cost. By the end of that decade, prices had dropped to the point where a basic calculator was affordable to most and they became common in schools. Computer operating systems as far back as early Unix have included interactive calculator programs such as dc and hoc, and interactive BASIC could be used to do calculations on most 1970s a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lexington, Kentucky
Lexington is a city in Kentucky, United States that is the county seat of Fayette County, Kentucky, Fayette County. By population, it is the List of cities in Kentucky, second-largest city in Kentucky and List of United States cities by population, 57th-largest city in the United States. By land area, it is the country's List of United States cities by area, 28th-largest city. The city is also known as "Horse Capital of the World". It is within the state's Bluegrass region. Notable locations in the city include the Kentucky Horse Park, The Red Mile and Keeneland race courses, Rupp Arena, Central Bank Center, Transylvania University, the University of Kentucky, and Bluegrass Community and Technical College. As of the 2020 United States census, 2020 census the population was 322,570, anchoring a Lexington-Fayette, KY Metropolitan Statistical Area, metropolitan area of 516,811 people and a Lexington-Fayette-Frankfort-Richmond, KY Combined Statistical Area, combined statistical ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Don Mills
Don Mills is a mixed-use neighbourhood in the North York district of Toronto, Ontario, Canada. It was developed to be a self-supporting " new town" and was at the time located outside Toronto proper. In 1998, North York, including the Don Mills community, was amalgamated into Toronto proper. Consisting of residential, commercial and industrial sub-districts, it was planned and developed by private enterprise. In several ways it became the blueprint for postwar suburban development in Toronto and contemporary residential neighbourhoods. It is bounded by York Mills Road to the north, Canadian Pacific Railway to the south, Leslie Street to the west, and Don Valley Parkway to the east. It is part of federal and provincial electoral district Don Valley East, and Toronto electoral ward 16: Don Valley East. History The Don Mills area was first settled by Europeans in 1817. The area was a considerable distance from the town of York, but the Don River provided an easy means of transporta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IBM 632
The IBM 632 was a valve-and-relay driven basic (very basic) accounting machine, introduced in 1958, that was available in seven different models. It consisted of an IBM Electric typewriter and at least a punched card unit (like the IBM 024) that housed the "electronics" in two gates (a relay gate and an electronic gate). Some machines also had a card reader unit (like the IBM 026). A small core memory provided storage for 8 numeric 12 digit words. The machine was programmed primarily with a plastic tape that moved synchronously with the typewriter carriage. Each tape would typically handle one application. The tape mechanism was mounted behind the carriage in the typewriter unit. Further programming was provided in the card machines program drums. Programs were only executed as the machine typed or spaced over a column - tabbing or carriage returning was not recognised. As the typewriter carriage moved from field to field three program entries were available in the last three col ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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