User Manual
Table Of Contents
- Important Information
- Overview of Calculator Operations
- Turning On the Calculator
- Turning Off the Calculator
- Selecting 2nd Functions
- Reading the Display
- Setting Calculator Formats
- Resetting the Calculator
- Clearing Calculator Entries and Memories
- Correcting Entry Errors
- Math Operations
- Memory Operations
- Calculations Using Constants
- Last Answer Feature
- Using Worksheets: Tools for Financial Solutions
- Time-Value-of-Money and Amortization Worksheets
- TVM and Amortization Worksheet Variables
- Using the TVM and Amortization Variables
- Resetting the TVM and Amortization Worksheet Variables
- Clearing the Unused Variable
- Entering Positive and Negative Values for Outflows and Inflows
- Entering Values for I/Y, P/Y, and C/Y
- Specifying Payments Due With Annuities
- Updating P1 and P2
- Different Values for BAL and FV
- Entering, Recalling, and Computing TVM Values
- Using [xP/Y] to Calculate a Value for N
- Entering Cash Inflows and Outflows
- Generating an Amortization Schedule
- Example: Computing Basic Loan Interest
- Examples: Computing Basic Loan Payments
- Examples: Computing Value in Savings
- Example: Computing Present Value in Annuities
- Example: Computing Perpetual Annuities
- Example: Computing Present Value of Variable Cash Flows
- Example: Computing Present Value of a Lease With Residual Value
- Example: Computing Other Monthly Payments
- Example: Saving With Monthly Deposits
- Example: Computing Amount to Borrow and Down Payment
- Example: Computing Regular Deposits for a Specified Future Amount
- Example: Computing Payments and Generating an Amortization Schedule
- Example: Computing Payment, Interest, and Loan Balance After a Specified Payment
- TVM and Amortization Worksheet Variables
- Cash Flow Worksheet
- Bond Worksheet
- Depreciation Worksheet
- Statistics Worksheet
- Other Worksheets
- APPENDIX - Reference Information
![](/manual/texas-instruments/iibapro-tbl-1l1/user-manual-english/images/img-77.png)
Other Worksheets 73
Interest Conversion Worksheet
Note: The calculator categorizes variables by their method of entry. (See
“Types of Worksheet Variables” on page 18.)
Comparing the Nominal Interest Rate of Investments
Comparing the nominal interest rate (annual percentage rate) of
investments is misleading when the investments have the same nominal
rate but different numbers of compounding periods per year.
To make a more valid comparison, convert the nominal interest rate
(
NOM) to the annual effective interest rate (EFF) for each investment.
• The nominal interest rate (
NOM) is the interest rate per compounding
period multiplied by the number of compounding periods per year.
• The annual effective interest rate (
EFF) is the compound annual
interest rate that you actually earn for the period of time stated.
Resetting Variables
• To reset all calculator variables and formats to default values,
including the Interest Conversion worksheet variables, press
&}!.
The Interest Conversion worksheet converts interest rates
between nominal rate (or annual percentage rate) and
annual effective rate.
• To access the Interest Conversion worksheet, press &
v.
• To select interest conversion variables, press # or ".
Variable Key Display Variable Type
Nominal rate & v NOM Enter/compute
Annual effective rate # EFF Enter/compute
Compounding periods per year # C/Y Enter-only
Variable Default
NOM 0
EFF 0
C/Y 1