HP 33s Scientific Reviewing the Stack, C–6, C–6 ALG: Summary

750 z12 ‘q360 ‘ or

750 z12 q360 ‘

In the second case, the qkey acts like the ‘key by displaying the result of

750 × 12.

Here’s a longer chain calculation: 456 − 75 ⋅ 68

18.5 1.9

This calculation can be written as: 456 …75 ‘q18.5 z68 q1.9 ‘. Watch what happens in the display as you key it in:

Keys:	Display:
456 75 ‘	 ./
	)
q18.5 z	ª)º
	) 
68 q	ª)º ª
	8)
1.9 ‘	ª)º ª)/
	) 



Reviewing the Stack

The or key produces a menu in the display— X1–, X2–, X3–, X4–registers, to let you review the entire contents of the stack. The difference

between the and the key is the location of the underline in the display. Pressing the displays the underline on the X4 register; pressing

the	displays the underline on the X2 register.
Pressing	displays the following menu:
% % % %
value

Pressing displays the following menu: % % % %

value

C–6ALG: Summary