HP 33s Scientific manual Storing and Recalling Numbers, 2Storing Data into Variables

Each black letter is associated with a key and are automatically active when needed. (The confirms this.)

a unique variable. The letter keys A..Z annunciator in the display

Note that the variables, X, Y, Z and T are different storage locations from the X–register, Y–register, Z–register, and T–register in the stack.

Storing and Recalling Numbers

Numbers are stored into and recalled from lettered variables with the I(store) and L(recall) functions.

To store a copy of a displayed number (X–register) to a variable:

Press Iletter–key.

To recall a copy of a number from a variable to the display:

Press Lletter–key.

Example: Storing Numbers.

Store Avogadro's number (approximately 6.0221 ⋅ 1023 ) in A.

Keys:	Display:	Description:
6.0221 a23	)_	Avogadro's number.
I	! _	Prompts for variable.
A (hold key)	! 	Displays function as long as key is
		held down.
(release)	)	Stores a copy of Avogadro's
		number in A. This also terminates
		digit entry (no cursor present).
‡	)	Clears the number in the display.
L	_	Prompts for variable.
A	)	Copies Avogadro's number from A
		the display.

3–2Storing Data into Variables