Texas Instruments BA-20 Profit Manager User Manual - Page 78

Date Worksheet, Date Worksheet Variables

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6. To compute a value for the unknown variable (interest rate), press # or " until NOM or EFF is displayed, and then press %. The calculator displays the computed value. Example: A bank offers a certificate that pays a nominal interest rate of 15% with quarterly compounding. What is the annual effective interest rate? To Select Interest Conversion worksheet. Enter nominal interest rate. Enter number of compounding periods per year. Compute annual effective interest rate. Press & v Display NOM= 15 ! NOM= # # 4 ! C/Y= " % EFF= 0 15.00 4.00 15.87 Answer: A nominal interest rate of 15% compounded quarterly is equivalent to an annual effective interest rate of 15.87%. Date Worksheet Use the Date worksheet to find the number of days between two dates. You can also compute a date and day of the week based on a starting date and a specified number of days. • To access the Date worksheet, press & u. • To access the date variables, press # or ". • To select the day-count method (ACT and 360), press & V once for each option. Date Worksheet Variables Variable Key Date 1 & u Date 2 # Days between dates # Actual/actual day-count method # 30/360 day-count method # Display Variable Type DT1 Enter/compute DT2 Enter/compute DBD Enter/compute ACT* Setting 360* Setting 74 Other Worksheets

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74
Other Worksheets
6.
To compute a value for the unknown variable (interest rate), press
#
or
"
until
NOM
or
EFF
is displayed, and then press
%
. The
calculator displays the computed value.
Example:
A bank offers a certificate that pays a nominal interest rate of
15% with quarterly compounding. What is the annual effective interest
rate?
Answer:
A nominal interest rate of 15% compounded quarterly is
equivalent to an annual effective interest rate of 15.87%.
Date Worksheet
Date Worksheet Variables
To
Press
Display
Select Interest Conversion
worksheet.
& v
NOM=
0
Enter nominal interest rate.
15
!
NOM=
15.00
Enter number of compounding
periods per year.
# #
4
!
C/Y=
4.00
Compute annual effective
interest rate.
" %
EFF=
15.87
Use the Date worksheet to find the number of days
between two dates. You can also compute a date and day
of the week based on a starting date and a specified
number of days.
•
To access the Date worksheet, press
& u
.
•
To access the date variables, press
#
or
"
.
•
To select the day-count method (
ACT
and
360
), press
& V
once for each option.
Variable
Key
Display
Variable Type
Date 1
& u
DT1
Enter/compute
Date 2
#
DT2
Enter/compute
Days between dates
#
DBD
Enter/compute
Actual/actual day-count method
#
ACT
*
Setting
30/360 day-count method
#
360
*
Setting