| 摘要 |
897,916. Digital electric calculating-apparatus. ANKER-WERKE A.G. Nov. 4, 1960 [Feb. 3, 1960], No. 37961/60. Drawings to Specification. Class 106 (1). Apparatus for interest calculations is adapted for a plurality of interest rates and interest days and comprises an electronic computer, an input device being provided to allow for the different lengths of time required for debit and credit interest respectively. Interest Z is calculated from the formula where K = the capital sum, p/100 = rate of interest and t = number of days. For a credit entry, interest does not accrue for the first fifteen days. As described, a keyboard includes four interest keys, each associated with a different rate of interest and adapted, when depressed to apply potential to an associated plugboard arranged to supply, in the case of an electronic computer operating with seven-digit numbers, the factor to the computer. The value of K is also entered and supplied to the computer. For entering the factor t, an arrangement of key-controlled contacts (Figs. 4a, 4b, not shown), is provided so that, for a credit entry, the value of t reduced by fifteen is entered in the computer, whereas for a debit entry, the true value of t is entered. To provide a visual indication of the value t, the keys on which the value of t is set up have contacts arranged to operate lamps when depressed. |
