The Automatic Stack

CALC 1 uses an automatic stack to hold the value of the last 4 calculations or values entered in CHN, ALG or RPN Calculation Mode.

This image shows the the display with all 4 values of the stack. This can be set in the options or using the swipe up or down gesture.

You can display 1-4 lines of the stack, but you always have all 4 values available.

Entering Values into the Stack

Entering a new number or the result of a chain or algebraic calculation are displayed in the x register.

• The value that was previously in the x register is copied to the y register.
• The value that was previously in the y register is copied to the z register.
• The value that was previously in the z register is copied to the t register.
• The value that was previously in the t register is lost.

Manipulating the Stack

will exchange the x and y register values.

will roll the values down:

• The value that was previously in the x register is copied to the t register.
• The value that was previously in the y register is copied to the x register.
• The value that was previously in the z register is copied to the y register.
• The value that was previously in the t register is copied to the z register.

Using ROLL in CHN calculation mode will allow you to enter previous results into a calculation.