Texas Instruments BA-20 Profit Manager User Manual - Page 28

Entering Values for I/Y, P/Y, and C/Y, Entering, Recalling, and Computing TVM Values

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Entering Values for I/Y, P/Y, and C/Y • Enter I/Y as the nominal interest rate. The TVM worksheet automatically converts I/Y to a per period rate based on the values of P/Y and C/Y. • Entering a value for P/Y automatically enters the same value for C/Y. (You can change C/Y.) Specifying Payments Due With Annuities Use END/BGN to specify whether the transaction is an ordinary annuity or an annuity due. • Set END for ordinary annuities, in which payments occur at the end of each payment period. (This category includes most loans.) • Set BGN for annuities due, in which payments occur at the beginning of each payment period. (This category includes most leases.) Note: When you select beginning-of-period payments, the BGN indicator appears. (No indicator appears for END payments.) Updating P1 and P2 To update P1 and P2 for a next range of payments, press % with P1 or P2 displayed. Different Values for BAL and FV The computed value for BAL following a specified number of payments might be different than the computed value for FV following the same number of payments. • When solving for BAL, PRN, and INT, the calculator uses the PMT value rounded to the number of decimal places specified by the decimal format. • When solving for FV, the calculator uses the unrounded value for PMT. Entering, Recalling, and Computing TVM Values • To enter a TVM value, key in the value and store it by pressing a TVM key 0). • To display a stored TVM value, press J and a TVM key. You can enter or recall a value for any of the five TVM variables (N, I/Y, PV, PMT, or FV) in either the standard calculator mode or a worksheet mode. The information displayed depends on which mode is selected. • In standard calculator mode, the calculator displays the variable label, the = sign, and the value entered or recalled. 24 Time-Value-of-Money and Amortization Worksheets

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24
Time-Value-of-Money and Amortization Worksheets
Entering Values for I/Y, P/Y, and C/Y
•
Enter
I/Y
as the nominal interest rate. The TVM worksheet
automatically converts
I/Y
to a
per period
rate based on the values of
P/Y
and
C/Y
.
•
Entering a value for
P/Y
automatically enters the same value for
C/Y
.
(You can change
C/Y
.)
Specifying Payments Due With Annuities
Use
END
/
BGN
to specify whether the transaction is an ordinary annuity
or an annuity due.
•
Set
END
for
ordinary annuities
, in which payments occur at the
end
of each payment period. (This category includes most loans.)
•
Set
BGN
for
annuities due
, in which payments occur at the
beginning
of each payment period. (This category includes most leases.)
Note:
When you select beginning-of-period payments, the
BGN
indicator
appears. (No indicator appears for
END
payments.)
Updating P1 and P2
To update
P1
and
P2
for a next range of payments, press
%
with
P1
or
P2
displayed.
Different Values for BAL and FV
The computed value for
BAL
following a specified number of payments
might be different than the computed value for
FV
following the same
number of payments.
•
When solving for
BAL
,
PRN
, and
INT
, the calculator uses the
PMT
value rounded to the number of decimal places specified by the
decimal format.
•
When solving for
FV
, the calculator uses the unrounded value for
PMT
.
Entering, Recalling, and Computing TVM Values
•
To enter a TVM value, key in the value and store it by pressing a TVM
key (
,
,
-
,
.
,
/
,
0
).
•
To display a stored TVM value, press
J
and a TVM key.
You can enter or recall a value for any of the five TVM variables (
N
,
I/Y
,
PV
,
PMT
, or
FV
) in either the standard calculator mode or a worksheet
mode. The information displayed depends on which mode is selected.
•
In standard calculator mode, the calculator displays the variable
label, the = sign, and the value entered or recalled.