HP 20b Business Consultant Financial Calculator User Manual download pdf (Page 94)

Programming86

Saving, Restoring, and Modifying Mode Settings

Often, programs are designed to run in a specific mode (for example, FIX 4 or RPN). You can

use L:u to recall the current mode, save it, modify the settings, either by going in

the menu, or using the

$:u function and then restoring it. For example:

1. L:u$1 recalls and stores the current mode settings in Memory 1.

2. :u4IO selects FIX=4.

3. Your program:

L1:$:u restores the mode settings to what they

were at the beginning of the program.

4. Lu returns a 12 digit number: CactdmrvAOff. See Table 13-4 for a description of

each digit.

When using :$:u, any illegal value is ignored and this setting will not

change. For example:

314:$:u will switch to RPN mode. No other setting will

change.

Table 13-4

Digit Description

A is “1” for radian mode, “2” for degree mode.

a is “1” in Semi-annual mode, “2” in Annual mode.

C is “1” in Standard TVM mode, “2” in Canadian TVM mode.

c is “1” in Actual day count mode, “2” in 360 day count mode.

d is “1” if the decimal separator is “.”, 2 for “,”

ff is “00” to “11” or “13” and indicates the FIX setting (13 is for FIX=-1).

m is “1” for “mm.ddyyyy” mode, “2” for “dd.mmyyyy” mode.

O is “1” for Chain mode, “2” for Algebraic mode, and “3” for RPN mode.

defines the regression line type. “1” for a*x+b, “2” for a*ln(x)+b, “3” for b*e

(ax)

, “4”

for b*x

, “5” for b*a

, “6” for a/x+b and “7” for ax

+bx+c.

t is “1” if thousands separators are not visible, “2” if they are visible.

v is “1” for 2 variable statistics, “2” for 1 variable, and “3” for 1 variable frequency.

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HP 20b Business Consultant Financial Calculator User Manual Page 94