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List of computer bus interfaces
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<h2 id="bus-interfaces">Bus interfaces</h2> <table><tbody><tr><th>Interface name</th><th>Year introduced</th><th>Connector</th><th>Max transfer</th><th>Main use</th><th>Notes</th></tr><tr><td><a href="/facts/Computer_Automated_Measurement_and_Control/WrToL70t">CAMAC</a></td><td>1972</td><td></td><td></td><td>Processor independent</td><td>Industry use.</td></tr><tr><td><a href="/facts/S-100_bus/3C5L4KSt">S-100</a></td><td>1974</td><td>2×50 2.54 mm <a href="/facts/Edge_connector/AXBbRgIV">card edge</a></td><td></td><td>Designed around <a href="/facts/Intel_8080/32FvNTcD">Intel 8080</a> but used with other processors too</td><td>Homebrew and industry use.</td></tr><tr><td><a href="/facts/VMEbus/wbApkELJ">VME</a></td><td>1981</td><td><a href="/facts/DIN_41612/mUaER2X1">DIN 41612</a></td><td>10 MByte/s</td><td><a href="/facts/Motorola_68000/3p2wt2D6">Motorola 68000</a> based</td><td>Industry use.</td></tr><tr><td><a href="/facts/STEbus/BdE3uRuG">STEbus</a></td><td>1983</td><td><a href="/facts/DIN_41612/mUaER2X1">DIN 41612</a> a+c rows</td><td>?</td><td>Processor independent based</td><td>Industrial quality bus, 8-bit data / 20-bit address. <a href="/facts/Eurocard_(printed_circuit_board)/ceeDsokd">Eurocard</a> sized.</td></tr><tr><td><a href="/facts/Acorn_Eurocard_systems/BPjqEYfq">Acorn system bus</a></td><td>1979</td><td><a href="/facts/DIN_41612/mUaER2X1">DIN 41612</a> a+b rows</td><td>?</td><td><a href="/facts/MOS_Technology_6502/q9YLwkzm">6502</a> based</td><td>8-bit data / 16-bit address.</td></tr><tr><td><a href="/facts/Industry_Standard_Architecture/5Rk4bjqB">ISA-8</a></td><td>1981<a class="footnote-ref" id="fnref:1" href="#fn:1"><sup>1</sup></a></td><td>2×31 2.54 mm</td><td>1.99 MByte/s<a class="footnote-ref" id="fnref:2" href="#fn:2"><sup>2</sup></a></td><td><a href="/facts/IBM_Personal_Computer/yhcJGMPL">IBM PC</a></td><td>Widespread.</td></tr><tr><td><a href="/facts/Industry_Standard_Architecture/5Rk4bjqB">ISA-16</a></td><td>1984<a class="footnote-ref" id="fnref:3" href="#fn:3"><sup>3</sup></a></td><td>2×31 + 2×18 2.54 mm</td><td>3.97 MByte/s<a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a></td><td><a href="/facts/IBM_Personal_Computer%2fAT/YEVHpWKF">IBM AT</a></td><td>Widespread.</td></tr><tr><td><a href="/facts/Amiga_Zorro_II/7xWtMhLx">Amiga Zorro II</a></td><td>1985<a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a></td><td>2×50 2.54 mm card edge</td><td>3.56 MByte/s</td><td><a href="/facts/Amiga/60B3A9of">Amiga</a></td><td>Auto configuration.</td></tr><tr><td><a href="/facts/Micro_Channel_architecture/63TW6aq4">Micro Channel</a></td><td>1987<a class="footnote-ref" id="fnref:6" href="#fn:6"><sup>6</sup></a></td><td>edge card</td><td>40 MByte/s</td><td><a href="/facts/IBM_PS%2f2/G299srDC">IBM PS/2</a></td><td>32-bit and 16-bit versions</td></tr><tr><td><a href="/facts/Extended_Industry_Standard_Architecture/paLar9py">EISA</a></td><td>1988<a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a></td><td>edge card</td><td>20 MByte/s</td><td><a href="/facts/IBM_PC_compatible/zGUpl7Sh">IBM clones</a></td><td>32-bit version of ISA-16 more or less.</td></tr><tr><td><a href="/facts/NuBus/5UIn0nv8">NuBus</a></td><td>1987</td><td>DIN 41612</td><td>40 MByte/s</td><td><a href="/facts/NeXT/71CK18lB">NeXT</a>, <a href="/facts/Macintosh_II/VzSQmwRj">Macintosh II</a></td><td></td></tr><tr><td><a href="/facts/Amiga_Zorro_III/2DYWfuCL">Amiga Zorro III</a></td><td>1990<a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a></td><td>2×50 2.54 mm card edge</td><td>150 MByte/s</td><td><a href="/facts/Amiga/60B3A9of">Amiga</a></td><td>Multiplexed 32-bit.</td></tr><tr><td><a href="/facts/Processor_Direct_Slot/DsuArRVl">PDS</a></td><td>1990</td><td><a href="/facts/DIN_41612/mUaER2X1">DIN 41612</a></td><td></td><td><a href="/facts/Macintosh_LC/GPW1vcuf">Macintosh LC</a></td><td></td></tr><tr><td><a href="/facts/Conventional_PCI/n6CGuFvP">PCI-32/33</a></td><td>1993<a class="footnote-ref" id="fnref:9" href="#fn:9"><sup>9</sup></a></td><td>card edge</td><td>133 MByte/s</td><td></td><td>Widespread.</td></tr><tr><td><a href="/facts/PCI_Express/ADhsLCUK">PCI Express</a></td><td>2004<a class="footnote-ref" id="fnref:10" href="#fn:10"><sup>10</sup></a></td><td>card edge</td><td>250 MByte/s</td><td></td><td><a href="/facts/Point-to-point_(telecommunications)/RmGgN1Pj">P2P</a> highspeed PCI.</td></tr><tr><td><a href="/facts/VPX/oLMfczJt">VPX</a></td><td>2004<a class="footnote-ref" id="fnref:11" href="#fn:11"><sup>11</sup></a></td><td>MultiGig RT2<a class="footnote-ref" id="fnref:12" href="#fn:12"><sup>12</sup></a></td><td>?</td><td>Provides VMEbus-based systems with support for <a href="/facts/Switched_fabric/TwfTsu3e">switched fabrics</a>. Designed specifically with defense applications in mind. Working group is <a href="/facts/OpenVPX/l0huzoa9">OpenVPX</a>.</td><td>VPX computer bus standard - V -VME and P -PCI and X the extents for both buses standards.</td></tr><tr><td><a href="/facts/VME_eXtensions_for_Instrumentation/Al59HvsX">VXI</a></td><td>1987<a class="footnote-ref" id="fnref:13" href="#fn:13"><sup>13</sup></a></td><td></td><td>160 MByte/s<a class="footnote-ref" id="fnref:14" href="#fn:14"><sup>14</sup></a></td><td>Multivendor standard for automated testing expansion cards. Working group is VXIConsortium.</td><td></td></tr></tbody></table> <h2 id="see-also">See also</h2> Wikimedia Commons has media related to Computer buses. <ul><li><a href="/facts/List_of_interface_bit_rates/RJzvfP0g">List of interface bit rates</a></li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>wiki: Industry Standard Architecture <a href="/wiki/Industry_Standard_Architecture" target="_blank">/wiki/Industry_Standard_Architecture</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Programmed I/O 4 cycles at 8.33 MHz: '(8*8330000*(1/4))/(8*2**20) <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>wiki: Industry Standard Architecture <a href="/wiki/Industry_Standard_Architecture" target="_blank">/wiki/Industry_Standard_Architecture</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>'(16*8330000*(1/4))/(8*2**20) <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>Introduction year of the A1000 <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>wiki: Micro Channel <a href="/wiki/Micro_Channel" target="_blank">/wiki/Micro_Channel</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> <li id="fn:7"><p>wiki: Extended Industry Standard Architecture <a href="/wiki/Extended_Industry_Standard_Architecture" target="_blank">/wiki/Extended_Industry_Standard_Architecture</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li> <li id="fn:8"><p>Introduction year of the A3000 <a href="#fnref:8" class="footnote-back-ref">↩</a></p></li> <li id="fn:9"><p>wiki: Conventional PCI <a href="/wiki/Conventional_PCI" target="_blank">/wiki/Conventional_PCI</a> <a href="#fnref:9" class="footnote-back-ref">↩</a></p></li> <li id="fn:10"><p>wiki: PCI Express <a href="/wiki/PCI_Express" target="_blank">/wiki/PCI_Express</a> <a href="#fnref:10" class="footnote-back-ref">↩</a></p></li> <li id="fn:11"><p>wiki: vpx <a href="/wiki/Vpx" target="_blank">/wiki/Vpx</a> <a href="#fnref:11" class="footnote-back-ref">↩</a></p></li> <li id="fn:12"><p>TE Connectivity <a href="https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=1773466-4_multigig-rt-2-r&DocType=DS&DocLang=EN/" target="_blank">https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=1773466-4_multigig-rt-2-r&DocType=DS&DocLang=EN/</a> <a href="#fnref:12" class="footnote-back-ref">↩</a></p></li> <li id="fn:13"><p>NI white paper on VXI <a href="https://www.ni.com/white-paper/2899/en/" target="_blank">https://www.ni.com/white-paper/2899/en/</a> <a href="#fnref:13" class="footnote-back-ref">↩</a></p></li> <li id="fn:14"><p>wiki: VME eXtensions for Instrumentation <a href="/wiki/VME_eXtensions_for_Instrumentation" target="_blank">/wiki/VME_eXtensions_for_Instrumentation</a> <a href="#fnref:14" class="footnote-back-ref">↩</a></p></li> </ol>