User Manual

7: Other Worksheets 107
Procedure: Computing Dates
쐃
Press
& u
to select the worksheet.
DT1
is displayed, along with the previous date.
쐇
Press
& z
to clear the worksheet.
쐋
Enter values for two of the three variables:
DT1
,
DT2
, and
DBD
. Do not enter a value for the variable you wish to solve
for.
Press
#
or
"
until the variable label you want is displayed,
and then key in a value and press
!
.
쐏
If necessary, change the day-count method setting.
Press
#
until
ACT
or
360
is displayed, and then press
&
V
repeatedly until the day-count method you want (
ACT
or
360
) is displayed.
쐄
Compute a value for the unknown variable.
Press
#
or
"
until the variable label you want is displayed,
and then press
%
.
The calculator computes and displays the value.
Example: Computing Days between Dates
A loan is made on January 4, 1996, but the first payment is
deferred until March 1, 1996. How many days does the loan
accrue interest before the first payment?
Procedure Keystrokes Display
Select and clear date
worksheet.
& u
& z
DT1= 12-31-1990
Enter first date.
1.0496
!
DT1= 1-04-1996

Enter second date.
#
3.0196
!
DT2= 3-01-1996

If necessary, select actual/
actual day-count method.
# #
& V
ACT
Compute days between dates.
" %
DBD= 57.00

Because there are 57 days between the two dates, the loan
accrues interest for 57 days before the first payment.