The Main Calculation and composition input.

The main calculation is started by pressing the ISO69 function key on the Main Menu.

There are two composition input procedures Input16 and Input17.

Input16.

As its name implies Input16 is the default method for input of data when there are 16 components or less. It uses a standard INFORM box and offers no goodies. However it is quick, simple to use and requires no special explanation.

Even pressing the INFORM menu button CALC practically allows you to do nothing.

Pressing CANCL aborts the input and the main calculation.


Input17.

Input17 is always used if there are 17 components or more. It can be selected for any number of components by starting ISO6976 using ISO69 key on the main menu.

First select the component you want to input or change, press OK and then edit it in a standard INFORM box.

Pressing CANCL in the component selction box simply terminates input with the composition as displayed.

The flexibility of Input17 lies in the fact that the input list (InData) is maintained as each component datum is input. This means that the stack available to the user from the INFORM menu button CALC is useful.

For example: assume that the input must sum to 100 exactly and the balance component is C1H4 and that you are too lazy to do this in your head. To achieve this, enter all the component data. Select component C1H4 and enter INFORM CALC mode. The current value for C1H4, will be on the stack. Type in 100 InData SLIST - + and the required value for C1H4 will be on the stack. All you need do now is select OK to enter this data for C1H4.

There is a lot more you can do. You can multiply the input data by 2 by using InData 2 * 'InData' STO, but a word of warning, you must tell Input17 that you have changed InData. To do this set user flag 2 and Input17 will update its internal lists.

A small menu called M17 is available. If you type in M17 the main stack immediately before the call to Input17 is placed above the current CALC stack, flag 2 is set and a more or less useful set of typing aids/functions displayed. Apart from c (the current component pointer) I leave it to the user to find out what these do.

To return to the CALC menu you must execue CONT (ON).

Selecting the input type.

Select the input type you want to use from the CHOOSE list and press OK. Pressing CANCL aborts the main calculation.

You may recieve warnings about the applicability ranges for the data and will then be presented with the Output Menu.




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