Victor PL8000 PL8000 One-Color Prompt Logic Printing Calculator, Black Print, 8 Lines/Sec Sold as 1 EA. Prompt Logic technology guides the user through various functions in a snap. Loan Wizard quickly and easily calculates installment loan payments. Enter any two variables of cost-sell-margin and the third automatically appears. Two independent tax keys allows you to program two different tax rates. Help key explains features on the display and in print.