IBM PC compatible Wikipedia. IBM PC compatible computers are those similar to the original IBM PC, XT, and AT, able to run the same software and support the same expansion cards as those. Such computers used to be referred to as PC clones, or IBM clones. They duplicate almost exactly all the significant features of the PC architecture, facilitated by IBMs choice of commodity hardware components and various manufacturers ability to reverse engineer the BIOS firmware using a clean room design technique. Columbia Data Products built the first clone of the IBM personal computer by a clean room implementation of its BIOS. Early IBM PC compatibles used the same computer bus as the original PC and AT models. Adobe Photoshop Cs6 Extended Edition The Extended Garden. This section of the documentation provides specifications for hardware compatibility for systems running Windows 10, version 1607. About Sergey Tkachenko. Sergey Tkachenko is a software developer from Russia who started Winaero back in 2011. On this blog, Sergey is writing about everything. Web Design and Applications involve the standards for building and Rendering Web pages, including HTML, CSS, SVG, device APIs, and other technologies for Web. The IBM AT compatible bus was later named the Industry Standard Architecture bus by manufacturers of compatible computers. The term IBM PC compatible is now a historical description only, since IBM has ended its personal computer sales. Compatibility Standards Hardware Software Required For Html' title='Compatibility Standards Hardware Software Required For Html' />View our Electronic Product examples of electronic engineering work. Encryption is the translation of data into a secret code. Encryption is the most effective way to achieve data security. VSA software performs vector signal analysis to visualize signal quality with multiple domain traces in time, spectrum and modulation. Descendants of the IBM PC compatibles comprise the majority of personal computers on the market presently with the dominant operating system being Microsoft Windows, although interoperability with the bus structure and peripherals of the original PC architecture may be limited or non existent. Only the Macintosh classic Mac OS and mac. ES. 4. Current Baseline Section 508 and Section 255 Costs. There are few data on federal agencies compliance with the Section 508 standards. OS kept significant market share without compatibility with the IBM PC, so consumers are typically identified as being a PC or Mac user similar to the divide in mobile devices between Android and i. OS, although current Macintosh models which run on Intel processors are based in part on the PC compatible architecture, albeit with components specific to the Macintosh. Originsedit. The original IBM PC Model 5. IBM decided in 1. Apple Computers success in the burgeoning microcomputer market. On 1. 2 August 1. IBM PC went on sale. There were three operating systems OS available for it. The least expensive and most popular was PC DOS made by Microsoft. In a crucial concession, IBMs agreement allowed Microsoft to sell its own version, MS DOS, for non IBM computers. The only component of the original PC architecture exclusive to IBM was the BIOS Basic InputOutput System. IBM at first asked developers to avoid writing software that addressed the computers hardware directly, and to instead make standard calls to BIOS functions that carried out hardware dependent operations. This software would run on any machine using MS DOS or PC DOS. Software that directly addressed the hardware instead of making standard calls was faster, however this was particularly relevant to games. Software addressing IBM PC hardware in this way would not run on MS DOS machines with different hardware. The IBM PC was sold in high enough volumes to justify writing software specifically for it, and this encouraged other manufacturers to produce machines which could use the same programs, expansion cards, and peripherals as the PC. The 8. 08x computer marketplace rapidly excluded all machines which were not hardware and software compatible with the PC. The 6. 40 KB barrier on conventional system memory available to MS DOS is a legacy of that period other non clone machines, while subject to a limit, could exceed 6. B. Rumors of lookalike, compatible computers, created without IBMs approval, began almost immediately after the IBM PCs release. Info. World wrote on the first anniversary of the IBM PC that4The dark side of an open system is its imitators. If the specs are clear enough for you to design peripherals, they are clear enough for you to design imitations. Apple. has patents on two important components of its systems. IBM, which reportedly has no special patents on the PC, is even more vulnerable. Numerous PC compatible machinesthe grapevine says 6. By June 1. 98. 3 PC Magazine defined PC clone as a computer that can accommodate the user who takes a disk home from an IBM PC, walks across the room, and plugs it into the foreign machine. Because of a shortage of IBM PCs that year, many customers purchased clones instead. Columbia Data Products produced the first computer more or less compatible with the IBM PC standard during June 1. Eagle Computer. Compaq announced its first IBM PC compatible in November 1. Compaq Portable. The Compaq was the first sewing machine sized portable computer that was essentially 1. PC compatible. The company could not copy the BIOS directly as a result of the court decision in Apple v. Franklin, but it could reverse engineer the IBM BIOS and then write its own BIOS using clean room design. Compatibility issueseditNon compatible MS DOS computersedit. The Compaq Portable was the first 1. IBM compatible PC, and the first portable one. MS DOS version 1. Compaq Personal Computers. At the same time, many manufacturers such as TandyRadio. Shack, Xerox, Hewlett Packard, Digital Equipment Corporation, Sanyo, Texas Instruments, Tulip, Wang and Olivetti introduced personal computers that supported MS DOS, but were not completely software or hardware compatible with the IBM PC. Tandy described the Tandy 2. CPU, and with More speed. More disk storage. More expansion than the IBM PC or other MS DOS computers. While admitting in 1. MS DOS programs did not support the computer, the company stated that the most popular, sophisticated software on the market was available, either immediately or over the next six months. Like IBM, Microsofts intention was that application writers would write to the application programming interfaces in MS DOS or the firmware BIOS, and that this would form what would now be termed a hardware abstraction layer. Each computer would have its own Original Equipment Manufacturer OEM version of MS DOS, customized to its hardware. Any software written for MS DOS would operate on any MS DOS computer, despite variations in hardware design. This expectation seemed reasonable in the computer marketplace of the time. Until then Microsoft was based primarily on computer languages such as BASIC. The established small system operating software was CPM from Digital Research which was in use both at the hobbyist level and by the more professional of those using microcomputers. To achieve such widespread use, and thus make the product viable economically, the OS had to operate across a range of machines from different vendors that had widely varying hardware. Those customers who needed other applications than the starter programs could reasonably expect publishers to offer their products for a variety of computers, on suitable media for each. Microsofts competing OS was intended initially to operate on a similar varied spectrum of hardware, although all based on the 8. Thus, MS DOS was for several years sold only as an OEM product. There was no Microsoft branded MS DOS MS DOS could not be purchased directly from Microsoft, and each OEM release was packaged with the trade dress of the given PC vendor. Malfunctions were to be reported to the OEM, not to Microsoft. However, as machines that were compatible with IBM hardwarethus supporting direct calls to the hardwarebecame widespread, it soon became clear that the OEM versions of MS DOS were virtually identical, except perhaps for the provision of a few utility programs. MS DOS provided adequate functionality for character oriented applications such as those that could have been implemented on a text only terminal.