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Active References


You can retrieve any previous balance for reuse as the current entry.  Similar to  memory registers, you can fetch a previous balance simply by touching it with the mouse.  Your current entry on the tape will then show the number followed by the notation {Bxxx] where xxx is the row number of the balance you fetched.  Whenever you change any entries on the tape, the balances are recalculated.  And the entries that use these balances are updated too.  For this reason, you cannot directly update any tape entries that refer to prior balances.  Instead, simply update the entries that led to the original balance.

In the example at the left, the first two numbers (123 and 456) were entered manually. then we pressed the "/" key, followed by a click on the balance in row 1 (123).  If you then enter another operator, the equal, or enter key, this value will be saved on the IntelliTape.  To the right of the entry, you see the designation "[B1]", meaning that this is an active reference to the balance in row 1.  

Any editing you do that changes the balance in row 1 will automatically change the entry in row 3.  In this example, we have changed the entry in row 1 to 15.9.  Notice how the entry in row 3 has changed.

You can make as many active references as you like by using any balance on the tape from any row before the current row.  The Active References feature effectively gives you an infinite number of memory registers.

If you click on a balance item, and then modify the number before registering it on the tape, then it is not an active reference.  The modified number is treated exactly as if you had entered the entire number manually.

You may notice that certain complex operations (like percentages) automatically add active references to your tape.

Active references also work with the memory and financial registers.

More about IntelliTape.