User manual TEXAS INSTRUMENTS BA-35 SOLAR QUICK REFERENCE

[. . . ] BA-35 Solar Quick Reference Guide Table of Contents General Information . . . . . . . . . . . . . . . . . . . . . . . . . . The Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Arithmetic Operations . . . . . . . . . . . . . . . . . . . . . . . . Correcting Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Enter the two known values (CST, SEL, or MAR). Press 1 and the key for the unknown value. Performing Markup Calculations To calculate cost, selling price, or markup: 1. Press 0 b to clear the registers and use 2 to enter the profit margin mode (no display indicator). Enter the two known values (CST, SEL, or MU). Press 1 and the key (or key sequence) for the unknown value. 15 Compound Interest Calculations To calculate compound interest, use 2 to set the calculator to the to the financial mode (FIN appears in the display). In compound interest calculations in which no payment is involved, the payment (PMT) is assumed to be zero. When the payment has a value other than zero, the calculator treats the problem as an annuity (a series of regular, equal payments). Compound Interest Keys In compound interest calculations, the following keys are used to enter or calculate the values listed below. I--Percent interest per compounding period. With a savings account, for example, PV represents what your money is worth today. With a savings account, for example, FV represents what your money will be worth in the future. 1 (Computation Key)--Computes the unknown value for compound interest problems. 16 Recalling Values To recall a value that you have entered or computed, press s and the appropriate key for the value you want to recall. For example, to recall the present value, press s K. This value may be positive or negative, depending on the type of problem you are solving (as explained on page 20). L--Future value of a series of payments plus the future value of PV. With a savings account, FV represents the final amount withdrawn. With a loan, FV represents any balloon payment that must be made in addition to the last regular payment. 1 (Computation Key)--Computes the unknown value for annuity problems. § When Begin is not displayed, the 1 key computes the unknown value for ordinary annuities (annuities with end-of-period payments). § When Begin is displayed, the 1 key computes the unknown value for annuities due (annuities with beginning-of-period payments). 19 Annuity Calculations (Continued) Recalling Values To recall a value that you have entered or computed, press s and the appropriate key for the value you want to recall. [. . . ] The calculator will not accept a keyboard entry until you press - or u to clear the error condition. (Press - twice to clear the condition and all pending operations; press u to clear the calculator completely. ) General Error Conditions The error conditions listed below can occur in any mode. Errors occur when you: § Calculate a result that is outside the range -9. 999999 x 10 99 to -1 x 10 -99, zero, or 1 x 10 -99 to 9. 999999 x 10 99. Calculate 0 4 for an old value equal to zero. [. . . ]