Version 2.87 of Molecular Weight Calculator for Dos now available. New Features: Updated the help files to reflect changes in the Windows version Why is it better than other programs available? First of all it's free, yet fully functional. I feel it is very powerful, more functional and more user friendly than other molecular weight programs I've found over the net. I'm making it available for others so that they can use it in their research and studies. This program is ideal for old Dos-based computers you may have sitting around the lab. Note that a Windows version with added features is also available (see below). AVAILABILITY ------------------------------------------------------------------------------ Dos Version (MWT v2.87) The program is available via the web at http://plains.uwyo.edu/~monroem/ or at http://www.coast.net/SimTel/msdos/chemstry.html and http://www.cdrom.com/simtel.net/msdos/chemstry.html and http://www.simtel.net/pub/simtelnet/msdos/chemstry/ in the mwt2_87.zip file. The program is also available via Anonymous FTP at ftp.coast.net under the SimTel/msdos/chemstry/ directory in the mwt2_87.zip file, at ftp.simtel.net under pub/simtelnet/msdos/chemstry/ in the mwt2_87.zip file, and ftp.ccl.net under the pub/chemistry/software/MS-DOS/Molecular-Weight-Calculator/ directory in the mwt2_87.exe file. Windows Version (MWTWin v3.2) The program is available via the web at http://plains.uwyo.edu/~monroem/ or at http://www.coast.net/SimTel/win3/chem.html and http://www.cdrom.com/simtel.net/win3/chem.html and http://www.simtel.net/pub/simtelnet/win3/chem/ in the mwt3_2.zip file. The program is also available via Anonymous FTP at ftp.coast.net under the SimTel/win3/chem/ directory in the mwt3_2.zip file, at ftp.simtel.net under pub/simtelnet/win3/chem/ in the mwt3_2.zip file, and ftp.ccl.net under the pub/chemistry/software/MS-WINDOWS/Molecular_Weight/ directory in the mwt3_2.exe or mwt3_2s.exe files. As a final option, I can mail you a UUEncoded or MIME encoded version via e-mail; just drop me a line. Please see my home page for the complete Windows version features list. In short, though, it includes all the of features listed below for the Dos version, plus: New Windows Interface Modify elemental values (element weight and uncertainty) Edit and save abbreviations and elemental values while program is running Save options as defaults Copy and paste information to/from other Windows programs Unlimited formula length Ability to print results Ability to change the font used to display formulas Mole/Mass Converter Formula Finder Full hypertext help As for the Dos version, ... FEATURES ----------------------------------------------------------------------------- Multi Line Display Display of up to seven formulas with their molecular weights simultaneously. Percent Composition Percent composition of up to seven formulas. Parentheses Are Allowed Handles up to 4 layers of embedded parentheses. For example, (CH3)3CH2CH3 is equivalent to CH3CH3CH3CH2CH3. Hydrates or other appended compounds are allowed. For example, FeCl3-6H2O. User-definable abbreviations Default abbreviations are included for common parts of compounds, including amino acids. See full list. For example, PhCl = C6H5Cl and HOac = CH3COOH. Smart Case Conversion The program will automatically convert lowercase letters to uppercase where appropriate for ease of entering a formula. Exact case matching and non-conversion are also available. Up to 150 user-defined abbreviations can be added. Isotopes are recognized using the following notation: ^13C is Carbon-13 C6H5^18OH is heavy-oxygen (Oxygen-18) labeled phenol Feature of weighting parts of a compound relative to the other parts. For example, [.2Na]Cl would have a weight of 0.2*22.989768+35.4527=40.0507 NaCl-[.5H2O] would have a weight of 22.989768+35.4527+0.5*(2*1.00794+15.9994)=67.4501 Percent Solver mode for finding the value of "x" in a compound that satisfies user-specified percent composition requirements. Accuracy of the final digit of the molecular wt. and percent composition. Capability to set optional features at the command line when starting the program. Capability of printing results. Extensive On-Line Help and Error Checking THE AUTHOR ------------------------------------------------------------------------------ Contacting the Author You can contact me by E-mail at Monroem@UWyo.Edu until I graduate in May 1997. After that, E-mail BPat@UWyo.Edu for information on my whereabouts. About the Author I am an undergraduate chemistry major at the University of Wyoming in Laramie, Wyoming. I plan to attend graduate school and aim to obtain a doctorate in chemistry. I taught myself to program in BASIC on an Apple //c (with 128 Kb of Ram and no hard disk) in 1986 during 6th grade. Since then, I have updated to GW-Basic, then QuickBasic v4.5, QuickBasic v7.1 for DOS, and now Visual Basic 3.0 for Windows. I am familiar with C, and, though I know it is much faster than Basic, I stick with the various forms of Basic since I am much more comfortable with the language. I have also been told that Visual Basic is easier to learn than Visual C, and, in fact, I taught myself Visual Basic in two days. /============================================================================\ I was goin' Chopin', but I forgot my Lizst! Had to go Bach to get it. What are the following? Matthew Monroe Black Angus : Black Angus Chemistry Major Black Angus : Texas Longhorn University of Wyoming Black Angus : Brown Swiss ------------------------------------------------- monroem@uwyo.edu Homogeneous Catalyst : Heterogeneous Catalyst /----------------------------------\ | http://plains.uwyo.edu/~monroem/ | This tagline is umop apisdn. \============================================================================/