User Manual

7-9
• { Σ INT } … {total interest paid from installment PM1 to installment PM2}
• { Σ PRN } … {total principal paid from installment PM1 to installment PM2}
• { CMPD } … {compound interest screen}
• An error (Ma ERROR) occurs if parameters are not configured correctly.
Use the following function menus to maneuver between calculation result screens.
• { REPT } … {parameter input screen}
• { CMPD } … {compound interest screen}
• { GRPH } … {draws graph}
After drawing a graph, you can press !1(TRCE) to turn on trace and read calculation
results along the graph.
The first press of !1(TRCE) displays
INT and PRN when n = 1. Each press of e shows
INT and PRN when n = 2, n = 3, and so on.
Press J to return to the parameter input screen.
6. Interest Rate Conversion
The procedures in this section describe how to convert between the annual percentage rate
and effective interest rate.
u Formula
APR : annual percentage rate (%)
EFF : effective interest rate (%)
n : number of compoundings
Press 5(CNVT) from the Financial 1 screen to display the following input screen for interest
rate conversion.
5(CNVT)
n ........... number of compoundings
I % ......... interest rate
E
FF =
n
APR/100
1+
–1 × 100
n
A
PR =
100
EFF
1+
–1 × n ×100
1
n