Pc Calculator, user defined functions

1.	With Pc Calculator the creation of the user defined functions is easy. Actually each of its memory lines is also a function, which can be executed with the line function £ or a quote function ". Here is a collection of hyperbolic functions, which take their parameters from the register @.	2.	You can add explanatory comments anywhere into the the calculators memory. Here is the beginning of formulas, which calculate the date of the easter sunday for the year in the register y.
3.	The size of the calculators working memory is either 50 Kb or 2000 memory lines. When you start the program, it opens its memory from the place the cursor was when the program was previously closed. If you want to go to some specific point in the memory, you can use programs find command Alt-f.

  Using line function £ to execute program lines

4.	In this screenshot cursor is on the line V=494. If the code is somewhere else, then you only need to give a new value to V on this line.	5.	Here the coefficient values start from the line U=489. They can also be anywhere in the memory, if you only give a correct value to U on the line V.
3.	This was the landing place of the previous screenshot's find command. Note that the formulas of this example are also usable for solving the linear equations in three variables. If so, you simply need to put P=Q=R=T=0 and S=1, for instance. Note also that you can use Windows' copy and paste (read the manual) to copy a set of coefficients to an other memory place and then overwrite new values for them.

Advanced properties If you can calculate something on paper, so you can with Pc Calculator too but only much faster. Find here an example how refraction integral is calculated with Pc Calculator. This is a program for you, If you, for instance, want to know, how far away a refraction raised horizon is. What makes Pc-Calculator unique? Its user interface is an editor. This allows a full control, how its memory is arranged. You can add explanatory comments and make your own named constants and/or shortcuts. There can be many expressions on one line and the line can be even 1000 characters long. You can scroll memory lines horizontally one at a time. You can scroll memory lines vertically as you wish. If no risk of confuse exists, the use of the multiplication sign is voluntary. Spaces are allowed in the numbers. Shortcuts for the standard functions (s=sin, c=cos, ...). Line function £, user functions u and v. Sexagesimal to decimal and decimal to sexagesimal conversion. In the functions parenthesis are in many cases unnecessary, for instance, s30,0 = s(30.0). In the long number mode also the remainder is calculated, if whole numbers are divided. The background colour of the memory sheet is in two colours. This helps the user to outline the scheme. No mouse support. This forces to use computers keyboard or numeric keypad, which is much, much faster. If you doubt that, take time and try to count a total of twenty decimal numbers, for instance. However, start with Pc-Calculator, because the author of the program is almost sure that you can't get a correct answer, not at least in the first try, with any mouse oriented calculator. And this I dare to say regardless, how accurately those resemble their pocket calculator exemplars. Some of them are even proud about that, which I think is ridiculous. At least, I haven't seen any pocket calculator, which were used with a mouse ;)

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