Editing Calculator (section)

===Memory===
Calculators also have the ability to save numbers into [[computer memory]]. Basic calculators usually store only one number at a time; more specific types are able to store many numbers represented in [[variable (mathematics)|variable]]s. Usually these variables are named ans or ans(0).<ref>[https://education.ti.com/en/guidebook/details/en/706B2B75F7D3464EBE6A8F8BE9F00EAC/30xii Texas Instruments TI-30X IIB Quick Reference Guide], Page 1 - Last Answer</ref> The variables can also be used for constructing [[formula]]s. Some models have the ability to extend [[Computer memory|memory]] capacity to store more numbers; the extended [[memory address]] is termed an [[array data structure|array]] index.