Free Software

HP-50g HP-49g+ Finding k1 and k2 for a 2nd order ODE

These three programs take the necessary input data, including the initial conditions yo, and Dyo (derivative of y(t) at t=0+), among other, and produce the integration constants k1 and k2 for each of overdamped, crtically damped or underdamped cases. CDMP, ODMP, UDMP. There is no implicit warranty on the quality or accuracy of these programs. They are shown here only as a reference and example of what can be done with the HP-50g programmable calculator. You are solely responsible for verifying their accuracy, correctness, and validity.

HP-50g HP-49g+ Set of Complex Numbers Operations, etc.

HP-50g HP-49g+ Bode Plot helping programs (3)

Three simple and short programs to help on the completion of Bode plots, both in amplitude and in phase. The "comments" on each of the three listings explain clearly their purposes and usage. Look at BODE, but also at PLXBode and to Quad..

HP-50g HP-49g+ A programming manual

This in not as much software as it is the most important resource to program your HP-50g and HP-49g+. It contains, among many other things, a detailed introduction to programming the calculator, with examples; and also, in Appendix C, the complete list of System Flags (like the ones that I use in the "toggle" programs in the other entries of this list below. The manual is HERE.

HP-50g HP-49g+ From two numbers on the stack, it makes a complex number and back

If in REC mode, enter the real part to the stack, then the imaginary part and use this program to create a complex. If in POL mode, enter the absolute value to the stack, then the argument (angle) in the angle-mode that the calculator is currently on (DEG/RAD) and use this program to create a complex number. Included also is the inverse of this program. Check out HERE.

HP-50g HP-49g+ Toggle between Rectangular and Polar, and Degrees and Radians

Two mini-programs to set toggle keys, one to toggle between Polar and Rectangular mode, and another to toggle between Degrees and Radians. They rely on testing the system flags -16 and -17 (which tells the calculator what mode it is currently in). Check out HERE.

HP-50g HP-49g+ Triangle Solution

These programs were released by Hewlett-Packard with their legendary HP-25c, a long time ago. I adapted and translated their functionality unto the HP-49g+/50 . These programs are not in direct downlodable into the calculator format, they are human readable to by typed by hand! Check them out . There are five programs that call one another, that need to be stored as SAA, SSA, ASA, SAS, SSS. Test them thoroughly, as they are provided on a "as is" basis and no warranty of their correctess or accuracy is made, and you use them at your own risk.

HP-50g HP-49g+ Linear or Cubic interpolation programs

When the magnetization curve of a machine is given, not as a plot, but as a table, we need to interpolate between the supplied points. You can use a linear interpolation, download THIS program. Or a cubic interpolation, which is more accurate in our case, then download it HERE. In the linear case I am supplying a program that goes from 'x' to 'y' and another that returns from 'y' to 'x'. In the cubic case, only 'x' to 'y' is included. These programs are not in direct downlodable into the calculator format, they are human readable to by typed by hand!

HP-50g 2.09 ROM version

If your calculator has the ROM version 2.08 (in RPN mode, type VERSION and enter it to the register (1) of the stack, then click on EVAL), you need to upgrade it to version 2.09, or to version 2.15. Why? Because version 2.08 cannot do many of the things that you need for this course and 2.09 and 2.15 can! Download the file HERE, and the instructions how to install it, HERE. Be extra careful to follow those instructions to the letter lest you damage your calculator irreversibly. Be particularly careful pushing the RESET hole at the back of the calculator, if you apply too much force, you may break the little pushbutton there and render the machine "ready for service."

Power Point Slideshow

Students that do not own Microsoft's PowerPoint software, can download the free PowerPoint Viewer from: http://tinyurl.com/yfyrhj

Adobe Portable Document Format

Students that do not own Adobe's Acrobat software, can download the free Acrobat Reader from:
http://www.adobe.com/products/acrobat/readstep2.html

CircuitMaker2000

CircuitMaker provides fast, powerful yet affordable schematic design and simulation in one complete program. This intuitive, easy-to-use "Virtual Electronics Lab" gives you the flexibility to design and test electronic circuits, trying all the "what if" scenarios without ever worrying about faulty parts or bad connections. Students can download the free student edition of this commercial program click HERE. not on the icon below. The department has many licenses of the full edition of this program. Do you want to use these tips on using CircuitMaker2000 and these ones? Not?