Table 1-3 Keys and Functions

Key(s)

Description and Page Number in the User’s Guide

 

 

U!

Calculates factorial of number displayed in the X-

 

register (page 83).

Factorial

 

 

 

Uk

Natural antilogarithm. Raise e to power of the

 

number displayed in the X-register (page 83).

ex

 

Ul

Calculates natural logarithm (base e) of the number

 

in the displayed X-register (page 83).

LN

 

 

 

TRND

Rounds mantissa of 10-digit number in X-register to

Round

match the display (page 83).

 

 

 

Un

Leaves only the integer portion of the number

 

displayed in the X-register by truncating fractional

Integer function

portion. It replaces each digit to the right of the

 

decimal point by 0. The original number can be

 

recalled by pressing Ur(page 83).

 

 

Um

Leaves only the fractional portion of the number

 

displayed in the X-register by truncating the integer

Fractional

portion. It replaces each digit to the left of the

function

decimal point by 0. The original number can be

 

recalled by pressing Ur(page 84).

14 Getting Started