Saturday, November 27, 2010

Technical Requirements

To best view and use the sites, MIT OpenCourseWare has adopted the following guidelines:

  • Our course sites work on the Macintosh, Unix, and Windows platforms.
  • Although higher-speed connections are preferable, slower connections, such as 28.8 kbps modems, should allow users to view most materials on the sites; however, downloading materials will take a longer period of time.
  • Supported Browsers: MIT OpenCourseWare has tested the course sites with the following browsers:
    • Internet Explorer 7.0+ (Windows)
    • Safari 5.0+ (Mac OSX)
    • Firefox 3.5+ (all platforms)
  • Due to rapid development in the open source world, there may be other OpenSource software packages that will work as well as of any of those suggested below. We are unable to offer technical support for any of the suggested software
  • If you encounter difficulties, please contact MIT OpenCourseWare with thefeedback form.
Some special content filetypes require specialized software to use; an extensive list is included below:
File TypesSoftware Tool Suggestions
.aif, .aiffAudio Interchange File Format (AIFF). Any media player or sound editor program can be used to view the .aif files found on a course site. Please refer to the course materials for any specific instructions or recommendations.
.ascAny text editor can be used to view the .asc files found on a course site. Please refer to the course materials for any specific instructions or recommendations.
.aviMedia player software, such as QuickTime®PlayerRealOne™ Player, orWindows Media®Player, is required to run the .avi files found on a course site.
.batAny text editor can be used to view the .bat files found on a course site. These files are also executable. Please refer to the course materials for any specific instructions or recommendations.
.binFile decompression software, such as Winzip® or StuffIt®, is required to open the .bin files found on a course site.
.bmpAny number of image viewers can be used to view the .bmp files found on a course site
.cAny number of development tools can be used to compile and run the .c files found on a course site. Please refer to the course materials for any specific instructions or recommendations.
.cbpCentral Builder Project files are associated with C++ and can be opened with any text editor.
.ccAny number of development tools can be used to compile and run the .cc files, C++ source code, found on a course site. Please refer to the course materials for any specific instructions or recommendations.
.cifA standard filetype sponsored by IUCr, used by various software and tools.
.cirThese files can be read using PSPICE Schematics, available from Cadence, Inc.
.classJava®Virtual Machine software (automatically installed in most major Web browsers) is required to run the .class files found on a course site.
.cnfAny text editor can be used to view the .cnf files found on a course site. Please refer to the course materials for any specific instructions or recommendations.
.cppC++ source code can be opened with any text editor.
.coorAny text editor can be used to view the .coor files found on a course site. Please refer to the course materials for any specific instructions or recommendations.
.csvAny number of software tools can be used to import the .csv files found on a course site. Please refer to the course materials for any specific instructions or recommendations.
.ctdMATLAB®software is required to make use of the .ctd files found on a course site. NOTE: This is not a unique MATLAB extension. Please verify it is for use in MATLAB before using these statements.
.dat, .dataAny number of software tools can be used to import the .dat files found on a course site. Please refer to the course materials for any specific instructions or recommendations.
.db.db files are generic database files that store data in a structured format. They can be read by any number of database programs.
.dbfArcView software is required to open and work with .dbf files, although they can also be opened with Microsoft Excel software.
.dcdThe DCD files are single precision binary FORTRAN files the format is supported by a wide range of analysis and display programs (such asVMD and NAMD).
.dcmAn image format created by the National Electrical Manufacturers Association (NEMA) as a standard for distributing and viewing medical images, such as MRIs, CT scans, and ultrasound images.
.dcrShockwave®Player software is required to run the Shockwave® media found on a course site.
.dllAny number of programs can call the .dll files found on a course site. These files are also executable. Please refer to the course materials for any specific instructions or recommendations.
.dictAny number of text editors can be used view the .dict files found on a course site. Please refer to the course materials for any specific instructions or recommendations.
.doThe STATA® statistical package is required to view and run the .do files found on a course site.
.docMicrosoft®Word software is recommended for viewing the .doc files found on a course site. Free Microsoft®Word Viewer software,OpenOffice Writer, and AbiWord can also be used to view the .doc files.
.dsDataStudio ® Software is required to run the .ds files found on a course site.
.dtaThe STATA® statistical package is required to view and run the .dta files found on a course site.
.dviThese are supporting files used in conjunction with TeX documents. No additional software is required if you can already open or edit the primary document file.
.dxfThese are supporting files that allow computer-aided design (CAD) projects to operate across many different software packages. No additional software is required if you can already open or edit the primary document file.
.elLisp source code is primarily associated with Emacs Lisp, a dialect of the Lisp programming language used by the GNU Emacs and XEmacs text editors. It  can be opened with any text editor.
.epsGhostscript/GhostviewAdobe®Photoshop®, and Adobe®Illustrator are among the software tools that can be used to view the .eps files found on a course site.
.exeThe .exe files found on a course site are executable programs. Please refer to the course materials for any specific instructions or recommendations.
.fa, .fas, .fastaAny number of biological sequence comparison software tools can be used to import the FASTA formatted sequence (.fa) files found on a course site.
FEFLOWFEFLOW software is required to complete work on a course site.
.figMATLAB®software is required to view and run the .fig files (MATLAB graphics files) found on a course site.
.fin.fin fles are data offset tables and can be opened using any text edior.
.fitsFlexible Image Transport System (FITS) is a digital file format used to store, transmit, and manipulate scientific and other images. FITS is the most commonly used digital file format in astronomy. DS9 is an application that supports these files and is available for free download.
.f90Any number of development tools can be used to compile and run the .f90 FORTRAN 90 files found on a course site. Please refer to the course materials for any specific instructions or recommendations.
.forAny number of development tools can be used to compile and run the .for FORTRAN files found on a course site. Please refer to the course materials for any specific instructions or recommendations.
.fortran, .fAny number of development tools can be used to compile and run the .fortran files found on a course site. Please refer to the course materials for any specific instructions or recommendations.
.fnaAny number of biological sequence comparison software tools can be used to import the FASTA formatted sequence (.fna) files found on a course site.
.gffGFF is a format for describing genes and other features associated with DNA, RNA and protein sequences. The current specification and several software applications can be found here.
.gblorbThese compiled versions of .ni files can be run with an interpreter such as Frotz.
.gphThe STATA® statistical package is required to view and run the .gph files found on a course site.
.gzFile decompression software, such as Winzip® or StuffIt®, is required to open the .gz files found on a course site.
.hHeader files for .c programs. Any number of development tools can be used to compile and run the .h files found on a course site. Please refer to the course materials for any specific instructions or recommendations.
.hsHaskell compiler software is required to run the .hs files found on a course site.
.igs.igs is a CAD translation standard ASCII text-based format for saving and exporting vector data.
.ivThe ivview program from SGI Open Inventor toolkit is required to view the .iv files found on a course site.
.jarJava®plug-in software is required to run the Java® files found on a course site.
.javaAny number of development tools can be used to compile and run the .java files found on a course site. Please refer to the course materials for any specific instructions or recommendations.
.jmpJMP®Statistical Discovery Software is required to run the JMP® files found on a course site.
.jnlpJava®Web Start software is required to run the Java® files found on a course site.
.jsimJSim is a Java-based simulation system for building numeric models. Find instructions for using it here.
.keyKeynote, a component of iWork, is required for viewing .key files.
.kmlKeyhole Markup Language (KML) is an XML-based language schema for expressing geographic annotation and visualization on existing or future Web-based, two-dimensional maps and three-dimensional Earth browsers.
.ladMATLAB®software is required to make use of the .lad files found on a course site. NOTE: This is not a unique MATLAB extension. Please verify it is for use in MATLAB before using these statements.
.ldfMicrosoft SQL Server is required to make use of the .ldf files found on a course site. Free Microsoft SQL Server Express can also be used with the .ldf files.
.libThese files can be read using PSPICE Schematics, available from Cadence, Inc.
.lispAllegro Common Lisp software is required to run the .lisp files found on a course site.
.locMATLAB®software is required to make use of the .loc files found on a course site. NOTE: This is not a unique MATLAB extension. Please verify it is for use in MATLAB before using these statements.
.mMATLAB®software is required to run the .m files found on a course site. Additional toolbox plug-ins may also be required as noted on a course site. Any text editor can be used to view the contents of the .m files found on a course site.
.matMATLAB®software is required to view and run the .mat files found on a course site.
.mcdMathcad®software is required to view and run the .mcd files found on a course site.
.mdbMicrosoft®Access software is recommended for viewing the .mdb files found on a course site. Free Microsoft®Access viewer software can also be used to view the .mdb files.
.mdfMicrosoft SQL Server is required to make use of the .mdf files found on a course site. Free Microsoft SQL Server Express can also be used with the .mdf files.
.mdlMATLAB®software is required to run the .mdl files found on a course site.
.mfThese are metafont text or source files. To use these files, you need a typesetting program that can read the font such as TeX or Metafont. Please refer to the course materials for any specific instructions or recommendations.
.mid, .midiTMedia player software, such as QuickTime®PlayerRealPlayer™, orWindows Media®Player is required to run the MIDI files found on a course site.
.mncMINC is a medical imaging oriented extension of the NetCDF file format. NetCDF stands for "Network Common Data Form" and it is widely used in many areas of scientific data storage.
.modAny number of programs can be used to run the .mod files found on a course site. Please refer to the course materials for any specific instructions or recommendations.
.movQuickTime®Player software is required to view the .mov files found on a course site.
.movieQuickTime®Player software is required to view the .movie files found on a course site.
.mpMetaPost is a picture-drawing language that outputs Encapsulated PostScript (.eps) files.
.mppProject management software, such as Microsoft Project is required to use these files.
.mp3Media player software, such as QuickTime®PlayerRealOne™ Player, orWindows Media®Player is required to run the .mp3 files found on a course site.
.mp4The latest version of QuickTime®Player can be used to run the .mp4 files found on a course site.
.mpeg, .mpgMedia player software, such as QuickTime®PlayerRealOne™ Player, orWindows Media®Player is required to view these files.
.mphCOMSOL MULTIPHYSICS™(formerly FEMLAB) is required to make use of the .mph files found on a course site.
.mppProject management software, such as Microsoft Project is required to use these files.
.mwThese files are Maple Worksheet files, for use with Maple software.
.nbMathematica®software or the free MathReader software is required to run the .nb files found on a course site.
.net.net files describe a network. Pajek is required to analyze and visualize .net files.
.niStructured text .ni can be read and edited with WordPad, Microsoft Word, or any other text editor. They are designed for use with Inform 7, a design system for interactive fiction.
OASESOASES is a general purpose computer code for modeling seismo-acoustic propagation in horizontally stratified waveguides using wavenumber integration in combination with the Direct Global Matrix solution technique. It works with a variety of file types, including .par, .bdr, .cdr, .plp, .plt, .mtv, .trf and .rco.
.ordOMAXĂ‚® Software is required to run .ord files.
.oumAny text editor can be used to view the contents of the .oum file on this course site. To use the .oum file as instructed on this page,MATLAB®software is required.
.out.out fles are data offset tables and can be opened using any text edior.
.p3Primavera Project Planner® software is required to run the .p3 files on a course site.
.pdThese are files for use in Pure Data, an open source real-time graphical programming environment for audio, video, and graphical processing.
.pdbRasMol software is required to run the .pdb files found on a course site.
.pdbProtein Data Bank viewer software can be used to view the .pdb protein data bank files found on a course site.
.pdeThese files are associated with Processing, a programming language and environment for people who want to program images, animation and interactions.
.pddlAny text editor can be used to view the .pddl files found on a course site. Please refer to the course materials for any specific instructions or recommendations.
.plPerl interpreter is required to run the .pl files found on a course site.
.pptMicrosoft® PowerPoint® software is recommended for viewing the .ppt files found on a course site. Free Microsoft® PowerPoint® viewer software can also be used to view the .ppt files.
.psPostscript viewer software, such as Ghostscript/Ghostview, can be used to view the .ps files found on a course site.
.psfAny text editor can view these Protein Structure (.psf) files. They are generated by VMD Molecular Graphics Viewer and can be used withNAMD (Molecular Dynamics Simulator).
.pyUse the Python interpreter to run the .py files found on a course site.
.qifMATLAB® software is required to run the .qif files found on a course site. Any text editor can be used to view the contents of the .qif files found on a course site.
.rUse R, an open source language and development environment for statistical computing, graphics, and exploratory data analysis, to run the .r files found on a course site.
.ramRealOne™ Player software is required to run the .ram files found on a course site. There is a known issue with the Macintosh version of RealPlayer 11 that prevents the .ram files on the OCW/Highlights for High School sites from playing properly. Please download the RealPlayer 10 player here.
.rarFiles compressed using the .rar format can be extracted with the same software used to handle .zip (e.g., WinZip and StuffIt).
.rbRuby interpreter is required to run the .rb files found on a course site.
.rmRealOne™ Player software is required to run the .rm files found on a course site.
.rpt.rpt is a report file. Generally, these are ASCII files and can be read using any text editor.
.rtRealOne™ Player software is required to run the .rt files found on a course site.
.sAssembly file. Any number of development tools can be used to compile and run the .s files found on a course site. Please refer to the course materials for any specific instructions or recommendations.
.sas7bdatBase SAS software is required to open the .sas7bdat files found on a course site.
.scmScheme software is required to run the .scm files found on a course site.
.scsVirtuoso Spectre® software is required to run the .scs files found on a course site.
.sitStuffit® is required to open the .sit files found on a course site.
.slbThese files can be read using PSPICE Schematics, available from Cadence, Inc.
.sldasmSolidWorks®software is required to run and view the .sldasm files found on a course site.
.sldprtSolidWorks®software is required to run and view the .sldprt files found on a course site.
.slddrwSolidWorks®software is required to run and view the .slddrw files found on a course site.
.slogoStarLogo software is required to run the .slogo files found on a course site.
.smilRealOne™ Player software is required to run the .smil files found on a course site.
.soThese are Unix shared library files. Any number of programs can call the .so files found on a course site. These files are also executable. Please refer to the course materials for any specific instructions or recommendations.
.sptRasMol software is required to run the .spt files found on a course site.
.sqlThese data files for SQL (Structured Query Language) can be edited using any text editor, and read by any SQL-compatible database program, including FileMakerMicrosoft® Access and MySQL®.
.stlComputer-aided design (CAD) software is required to view the .stl files found on a course site.
.stpNanotec WSxM software is required to view the .stp file found on a course site.
.styThese are supporting files used in conjunction with TeX documents. No additional software is required if you can already open or edit the primary document file.
.subSubcircuit files used in the LTSpice graphical SPICE simulator.
.swfFlash™Player software is required to run the Flash™ media found on a course site.
.swjSolidWorks®software is required to run and view the .swj files found on a course site.
.tarFile decompression software, such as Winzip® or StuffIt®, is required to open the .tar files found on a course site.
.texSoftware to view the .tex files on this course site can be accessed via the Comprehensive TeX Archive Network (CTAN) and the TeX Users Group Web site.
.textgridPratt software is needed to make use of these plain text files that accompany corresponding sound files.
.tgzFile decompression software, such as Winzip® or StuffIt®, is required to open the .tgz files found on a course site.
.tifAny number of image viewers can be used to view the .tif files found on a course site.
.uasmA "micro" assembly language used in course 6.004. The files used in this course contain all information required to use them.
.ucfAny number of text editors can be used to open and modify .ucf files. In many cases, they can also be used in an FPGA design and testing environment such as Xilinx ISE WebPACK.
.vAny number of text editors can be used to open and modify .v files. In many cases, they can also be used in an FPGA design and testing environment such as Xilinx ISE WebPACK.
.vppThese files are associated with Visual Paradigm, a series of software development applications. Product downloads are available from theVisual Paradigm website.
.vsdMicrosoft®Visio®software is recommended for viewing the .vsd files found on a course site. Free Microsoft®Visio®viewer software can also be used to view the .vsd files.
.vssMicrosoft®Visio®software is recommended for viewing the .vss stencil files found on a course site. Free Microsoft®Visio®viewer software can also be used to view the .vss files.
.vstMicrosoft®Visio®software is recommended for viewing the .vst template files found on a course site. Free Microsoft®Visio®viewer software can also be used to view the .vst files.
.wavMedia player software, such as QuickTime®PlayerRealOne™ Player, orWindows Media®Player is required to run the .wav files found on a course site.
.wscpAny text editor can be used to view the .wcsp files found on a course site. Please refer to the course materials for any specific instructions or recommendations.
.wk1A Lotus123 worksheet that can be read directly into MATLAB®Lotus 123or MATLAB®software can be used to run the .wk1 files found on a course site. Please refer to the course materials for any specific instructions or recommendations.
.wmWorking Model 2D is required to view and run the .wm files found on a course site.
.wmaMedia player software, such as RealOne™ Player, or Windows Media®Player is required to run the .wma files found on a course site.
.wmvMedia player software, such as RealOne™ Player, or Windows Media®Player is required to run the .wmv files found on a course site.
.xAny number of development tools can be used to run the .x files found on a course site. Please refer to the course materials for any specific instructions or recommendations.
.xlo.xlo is an AutoDesk® Export Journal.
.xlsMicrosoft®Excel software is recommended for viewing the .xls files found on a course site. Free Microsoft®Excel viewer software can also be used to view the .xls files.
.xmcdMathcad®software is required to view and run the .xmcd files found on a course site.
.xmlAny text editor can be used to view the .xml files found on a course site.
.xslAny text editor can be used to view the .xsl files found on a course site.
.xyzVMD (Molecular Graphics Viewer) is used to to view and use .xyz files foudn on a course site.
.zipFile decompression software, such as PKZIP® , Winzip®, or StuffIt®, is required to open the .zip files found on a course site.

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