x y x*y x 'name' x_name x 'expr' x_expr
Not in HP-28Keyboard Access:HP48: RS- HP49/50: RS-Attach Unit function.
Attaches a number to a unit name. Intended to be used for the creation of unit objects, such as (two inches).
Note: The (underline) function acts like (multiplication) if the input is two real numbers, or a name and a number. If the second argument is a name or an algebraic, it is ’d and turned into a unit (if possible) before the multiplication is performed. Examples:HP49/50 oddity (in exact mode only!):(a real, same as HP48) (an integer! strange.) HP48: HP49/50:Pressing the key turns on algebraic mode. To turn it back off, either press the ENTRY key (RS-ALPHA) or perform any operation that is not allowed inside an algebraic expression.