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Morrow Pivot
The Pivot is a family of early IBM PC–compatible portable computers first released in 1984 by Morrow Designs, a company founded by George Morrow. It was the first lunchbox-style portable computer, with a vertically configured case that has a fold-down keyboard. The only external component is a single AC adapter. It would have been a little top heavy except for the large camcorder-style battery loaded into its base. The Pivot was designed by Chikok Shing of Vadem Inc. The IBM-compatible Pivot was Morrow's first non-Z80 machine. While modern laptops do not necessarily share its design, it was arguably the most practical machine until desktops embraced 3.5-inch floppies. Robert Dilworth went from being General Manager of Morrow Designs to being CEO of Zenith Data Systems for years as part of Zenith's paying him to talk George Morrow into licensing the Pivot to them. Specifications The original model, retrospectively called the Pivot I, was unveiled at COMDEX/Spring '84 in M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morrow Designs
Morrow is a word meaning "the next day" in literary English. It also means "morning" in archaic English Morrow may also refer to: Places in the United States and Canada United States *Morrow, Arkansas *Morrow, Georgia * Morrow, Louisiana *Morrow, Ohio *Morrow County, Ohio *Morrow County, Oregon Canada *Morrow Lake, Ontario *Mount Morrow, Northwest Territories *Morrow Island, British Columbia People * Morrow (surname) Schools *Dwight Morrow High School, in Englewood, New Jersey *Elisabeth Morrow School, Englewood, New Jersey, United States Companies *TwoMorrows Publishing *William Morrow and Company, American publishing house, now an imprint of HarperCollins *Morrow Snowboards, manufacturer owned by K2 Sports *Morrow Designs, US manufacturer of 1985 laptop computer Morrow Pivot II and numerous early-1980s CP/M microcomputers * Morrow Property Brokers, Office 1303, Alameri Tower, Tecom, Dubai, United Arab Emirates Other uses *Morrow (song), a recording by Japanese group Dragon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terminate And Stay Resident
A terminate-and-stay-resident program (commonly TSR) is a computer program running under DOS that uses a system call to return control to DOS as though it has finished, but remains in computer memory so it can be reactivated later. This technique partially overcame DOS's limitation of executing only one program, or task, at a time. TSRs are used only in DOS, not in Windows. Some TSRs are utility software that a computer user might call up several times a day, while working in another program, using a hotkey. Borland Sidekick was an early and popular example of this type. Others serve as device drivers for hardware that the operating system does not directly support. Use Normally DOS can run only one program at a time. When a program finishes, it returns control to DOS using the system call . The memory and system resources used are then marked as unused. This makes it impossible to restart parts of the program without having to reload it all. However, if a program ends with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IBM PC Compatibles
IBM PC compatible computers are similar to the original IBM PC, XT, and AT, all from computer giant IBM, that are able to use the same software and expansion cards. Such computers were referred to as PC clones, IBM clones or IBM PC clones. The term "IBM PC compatible" is now a historical description only, since IBM no longer sells personal computers after it sold its personal computer division in 2005 to Chinese technology company Lenovo. The designation "PC", as used in much of personal computer history, has not meant "personal computer" generally, but rather an x86 computer capable of running the same software that a contemporary IBM PC could. The term was initially in contrast to the variety of home computer systems available in the early 1980s, such as the Apple II, TRS-80, and Commodore 64. Later, the term was primarily used in contrast to Apple's Macintosh computers. These "clones" duplicated almost all the significant features of the original IBM PC architectures. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sharp PC-7000
The Sharp PC-7000 is a luggable portable computer released by Sharp Electronics in 1985. The PC-7000 was Sharp's second entry into the IBM PC-compatible portable computer market, their first being the PC-5000. The PC-7000 eschewed the PC-5000's clamshell design, battery operation, and lighter weight— for the PC-7000 versus the PC-5000's . The compromise was an LCD display with electroluminescent backlighting, as well as an increased display line count—25 for the PC-7000 versus the PC-5000's eight. Sharp also replaced the predecessor's Intel 8088 processor with an 8086 running at a user-switchable 7.37 MHz and bumped the stock memory from 128 to 320 KB. These improvements led to higher performance and near-true IBM PC compatibility, in turn leading to a wider range of software that could be used with the computer. Sharp released the PC-7000 in October 1985 to high praise. It spawned a series of luggable computers featuring improvements to the original PC-7000's hardware. Shar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osborne Computer Corporation
The Osborne Computer Corporation (OCC) was a pioneering maker of portable computers. It was located in the Silicon Valley of the southern San Francisco Bay Area in California. The Henry Ford Blog: "The Rise and Fall of the Osborne Computer Corporation" April 16, 2015 — with images. Adam Osborne, the founder of the company, developed, with design work from , the world's first mass-produced portable computer in 1981. History Osborne 1 [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IBM PC Convertible
The IBM PC Convertible (model 5140) is a laptop computer made by IBM, first sold in April 1986. The Convertible was IBM's first laptop-style computer, following the luggable IBM Portable, and introduced the 3½-inch floppy disk format to the IBM product line. Like modern laptops, it featured power management and the ability to run from batteries. It was replaced in 1991 by the IBM PS/2 L40 SX, and in Japan by the IBM Personal System/55note, the predecessor to the ThinkPad. Predecessors IBM had been working on a laptop for some time before the Convertible. In 1983, work was underway on a laptop similar to the Tandy Model 100, codenamed "Sweetpea," but it was rejected by Don Estridge for not being PC compatible. Another attempt in 1984 produced the "P-14" prototype machine, but it failed to pass IBM's human factors tests, especially after poor public reception of the display in the competing Data General-One. Description The PC Convertible came in three models: PC Convertible, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internal Revenue Service
The Internal Revenue Service (IRS) is the revenue service for the United States federal government, which is responsible for collecting U.S. federal taxes and administering the Internal Revenue Code, the main body of the federal statutory tax law. It is an agency of the Department of the Treasury and led by the Commissioner of Internal Revenue, who is appointed to a five-year term by the President of the United States. The duties of the IRS include providing tax assistance to taxpayers; pursuing and resolving instances of erroneous or fraudulent tax filings; and overseeing various benefits programs, including the Affordable Care Act. The IRS originates from the Commissioner of Internal Revenue, a federal office created in 1862 to assess the nation's first income tax to fund the American Civil War. The temporary measure provided over a fifth of the Union's war expenses before being allowed to expire a decade later. In 1913, the Sixteenth Amendment to the U.S. Constitutio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hard Disk Drive
A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magnetic material. The platters are paired with magnetic heads, usually arranged on a moving actuator arm, which read and write data to the platter surfaces. Data is accessed in a random-access manner, meaning that individual blocks of data can be stored and retrieved in any order. HDDs are a type of non-volatile storage, retaining stored data when powered off. Modern HDDs are typically in the form of a small rectangular box. Introduced by IBM in 1956, HDDs were the dominant secondary storage device for general-purpose computers beginning in the early 1960s. HDDs maintained this position into the modern era of servers and personal computers, though personal computing devices produced in large volume, like cell phones and tablets, rely on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electroluminescence
Electroluminescence (EL) is an optical phenomenon, optical and electrical phenomenon, in which a material emits light in response to the passage of an electric current or to a strong electric field. This is distinct from black body light emission resulting from heat (incandescence), a chemical reaction (chemiluminescence), sound (sonoluminescence), or other mechanical action (mechanoluminescence). Mechanism Electroluminescence is the result of radiative recombination of electrons & electron hole, holes in a material, usually a semiconductor. The excited electrons release their energy as photons - light. Prior to recombination, electrons and holes may be separated either by doping (semiconductors), doping the material to form a p-n junction (in semiconductor electroluminescent devices such as light-emitting diodes) or through excitation by impact of high-energy electrons accelerated by a strong electric field (as with the phosphors in electroluminescent displays). It has been r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terminal Emulation
A terminal emulator, or terminal application, is a computer program that emulates a video terminal within some other display architecture. Though typically synonymous with a shell or text terminal, the term ''terminal'' covers all remote terminals, including graphical interfaces. A terminal emulator inside a graphical user interface is often called a terminal window. A terminal window allows the user access to a text terminal and all its applications such as command-line interfaces (CLI) and text user interface (TUI) applications. These may be running either on the same machine or on a different one via telnet, ssh, dial-up, or over a direct serial connection. On Unix-like operating systems, it is common to have one or more terminal windows connected to the local machine. Terminals usually support a set of escape sequences for controlling color, cursor position, etc. Examples include the family of terminal control sequence standards known as ECMA-48, ANSI X3.64 or ISO/IEC 642 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calculator App
A software calculator is a calculator that has been implemented as a computer program, rather than as a physical hardware device. They are among the simpler interactive software tools, and, as such, they provide operations for the user to select one at a time. They can be used to perform any process that consists of a sequence of steps each of which applies one of these operations, and have no purpose other than these processes, because the operations are the sole, or at least the primary, features of the calculator, rather than being secondary features that support other functionality that is not normally known simply as calculation. As a ''calculator'', rather than a computer, they usually have a small set of relatively simple operations, perform short processes that are not compute intensive and do not accept large amounts of input data or produce many results. Platforms Software calculators are available for many different platforms, and they can be: * A program for, or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Membrane Keyboard
A membrane keyboard is a computer keyboard whose "keys" are not separate, moving parts, as with the majority of other keyboards, but rather are pressure pads that have only outlines and symbols printed on a flat, flexible surface. Very little, if any, tactile feedback is felt when using such a keyboard. Membrane keyboards work by electrical contact between the keyboard surface and the underlying circuits when keytop areas are pressed. These models were used with some early 1980s home computers, enjoying wide adoption in consumer electronics devices. The keyboards are quite inexpensive to mass-produce, and are more resistant against dirt and liquids than most other keyboards. However, due to a low or non-existent tactile feedback, most people have difficulty typing with them, especially when larger numbers of characters are being typed. Chiclet keyboards were a slight improvement, at least allowing individual keys to be felt to some extent. Aside from early hobbyist/kit/home comp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
