


The Art of Interface 
Article 25Scientific calculator LiX — advancedCategory. Professional computing software for PC.
Application. Scientific calculations.
Description. Feature rich software scientific calculator for PC.
Reference. Case study: Scientific calculator LiL — why and how.
FeaturesScientific calculator LiX is software expression calculator with the following features:
1. Easy to learnLiX calculator is expression calculator, which means it can evaluate the whole expression at once. To evaluate expressions in LiX calculator or program it you are to know book notation, eastern or western, and a couple of keywords. Here they are: Memory (Mem) and Result (Rslt). Use access to current result like:
Store values to memory like:
Use the value in memory like (short notation):
Looks, now you know everything about syntax. 2. ProgrammableIf your calculations are long, sophisticated and multistaged — scientific calculator LiX can manage that for you. Enter all your formulas, use memory for storing results and utilizing them in other formulas, evaluate single formula or all of them at once, run your calculations as script. Here is a primitive script sample, which calculates phase, sets time and evaluates expression as function of phase and time:
Case study. Download script samples
and read this case to study how scripts can help you to organize your calculations. 3. Integrated text processorEnter your formulas from PC keyboard, edit them, insert comments. Your edit window area is limited only by display of your PC. Change the text editor font to your likeness. 4. Statistics supportCalculate mean, variance, standard and average deviations, skewness and kurtosis in one click — put the input data into memory and click St button to evaluate all parameters. Fig. 2. Statistics window.5. File supportSave your work to disk. LiX calculator files have text format, you can edit and create calculations in any text editor and then load into calculator for evaluation. Run your calculation scripts without loading them into the editor. 6. Print supportYou can print your calculations, control how they appear on paper, add header and footer to every page with file data, date, time and page number, set proper margins and preferable fonts. Fig. 3. Page setup dialog.7. Smart keypadYou can hide keypad to maximize display area and work only from PC keyboard. Or you can detach and place it at any comfortable position. Change color, size and appearance to your likeness. Change its notation and set preferences to automatically append functions with opening parenthesis. Fig. 4. Detached Keypad in custom colors.8. Extended memory controlYou can allocate as many memory cells for intermediate results as you need, just provide unique names for them. You can save memory to disk to use results in other calculations. Fig. 5. Memory window.9. Advanced function setAs advanced scientific version LiX calculator has extended functionality often required by scientific calculations. Calculator supports special functions:
It has a couple of functions for series processing:
As well the calculator has an embedded random number generator. 10. Context helpGetting help for any item you can see in LiX calculator is as easy as two clicks — just click the question mark button in toolbar and then click the item of interest — and you will be taken to the page with explanation. Fig. 6. LiX calculator Help.11. Embedded function handbookAs its part LiX calculator help has function handbook, which contains all function definitions, graphs and identities. To access the handbook click the question mark button in toolbar and then click the corresponding function button in keypad — and you will be taken to the handbook function page like “arcsin — trigonometric arc sine function”. Fig. 7. Embedded handbook.Technical dataPrecision: double. Number input/output format: decimal (standard notation) and exponential (scientific notation). Supported operators: addition, subtraction, multiplication, division. Supported functions:
RAM: min 2 MB. Size on disk: application (program) — 1.3 MB, its help — 1.8 MB. Platform: Windows 32bit and 64bit. Implementation: C++. How to evaluate
How to purchaseClick Purchase reference and follow instructions to buy scientific calculator LiX licenses. Every license gives you right to register two installations and generate two keys for them. Second installation is granted as spare one, you can use it for your second PC or notebook. How to registerAs soon as you have bought the license you can generate the key for LiX calculator registration. Attention. Registration ties the software to your PC hardware — make sure you are running LiX calculator on your target platform from your target location when opening Register dialog. It is recommended to select the most reliable hardware for your installation.
Is payment secure?
Money backCondition. Every LiX calculator license gives you right to generate 2 keys. You can request money back only before you have generated the first key. Several licenses. Any unused scientific calculator LiX license can be claimed for money back. For instance, you have bought 2 licenses. If you have generated 1 or 2 keys, the first license is used and the second one could be claimed for money back. How. To request money back go to Money back page of your account. SupportOur scientific calculators have life time support. Any
concerning scientific calculators, please, send to Support@librow.com.


