![]() ![]() ![]() ![]() The weighting factors account for the fact that the selectivity of separations are more sensitive to differences in some parameters than others. Default values for the weighting factors are entered automatically below. The default values describe the relative importance of each parameter in affecting the selectivity of the separation of an "average" sample. For example, the default w H is only 12.5 while that of w C 2.8 is 83, reflecting the fact that, in an "average" sample, a difference in the C 2.8 parameter affects the selectivity of the separation much more than an equivalent difference in the H parameter. In some cases, you may want to change the relative weights. For example, if you are only interested in separating uncharged compounds, a difference in the C 2.8 parameter will have little, if any effect on the separation. complete Greek and extended Latin letter fonts covering many languages on this planet (upper and lower case in two font sizes each).In that case, you may wish to change w C 2.8 to zero in order to get a more relevant measure of the difference between two columns.50 fundamental physical constants as precise as known today by national standards institutes like NIST or PTB, plus some more out of mathematics, astronomy, and surveying,.84 conversions, mainly between universal SI and old Imperial units,.financial operations like mean rate of return and margin calculations,.integer computing in arbitrary bases from binary to hexadecimal,.extended date and time calculations based on a real time clock,.programmable sums and products, first and second derivatives,.many statistical distributions and their inverses like Poisson, Binomial, Geometric as well as Cauchy-Lorentz, Exponential, Logistic, Weibull for reliability analysis, Lognormal and Gaussian with arbitrary means and standard deviations,.Euler's Beta and Riemann's Zeta functions, Bernoulli and Fibonacci numbers, Lambert's W, the error function as well as Chebyshev's, Hermite's, Laguerre's and Legendre's orthogonal polynomials, and testing for primality,.Externally programmable by developers via JTAG interface.RPN keystroke programmable à la HP-41 - up to 925 steps in RAM - numeric and/or alpha labels, thousands of steps burnable into flash banks.Serial port header behind battery door and JTAG connector (connects to AT91SAM-ICE) inside the calculator for developers.Traditional RPN (Reverse Polish Notation) with four-level or eight-level stack.12 digits displayed with 3-digit exponent.Two CR2032 batteries, providing 9 months of typical use. ![]() Atmel AT91SAM7L128 ARM7 processor (30 MHz).2 line alphanumeric display (top line with 8 dot matrix characters and 11 indicators, bottom line with 12+3 digits) with adjustable contrast.Based on HP part number NW238AA ( Data Sheet).Hard plastic keys with traditional HP "click" feedback.Metallic-infused transparent faceplate with black vinyl keyboard overlay, textured gray slides and glossy black back.However, there is no tracking available with this shipping method. Note: For international deliveries, I can ship it by First Class Mail, reducing the shipping fee to around US$25 (instead of $40+). Finally, I flash the latest version 3.3 ROM (from SVN), using the crystal version to include the stopwatch. Then I carefully attach the overlay sticker. This means I carefully open the calculator, solder in the components, and then close the calculator, with no damage to the case. Latest 3.3 build of the firmware pre-flashed.Latest revision 3.x keyboard overlay pre-installed.Clock crystal and required capacitors pre-installed.HP 30b calculator, for the best keyboard.I have written instructions explaining how to make your own WP34S, but if you would like the work done for you, this package provides you with a full WP 34S calculator, with the following components: Later, Marcus von Cube joined the team and made it run on the HP 20b/30b platform.Īt this point, the WP 34S functionality is comparable to that of the long-discontinued HP 42S, but expanded significantly. The software of the 34S was written largely by Walter Bonin and Paul Dale, initially just as a PC program. It is not an HP product, but it is rather a community-created product based on an existing HP calculator platform. The WP 34S is the most powerful scientific (non-graphing) calculator on the market. Note: I am a bit behind on making these, so please expect a delay of 4-6 weeks before shipment. Main Page | Shopping Cart | Purchase Information ![]()
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