계산 기능 :
%, 00, +/-, TAX+, TAX-, square root, time calculation + display in format H/M/S, 3 memory keys M+ / M- / MRC, backspace (deletes last digit), CLEAR (last value), ALL CLEAR
버튼 & 키 :
%, 00, +/-, TAX+, TAX-, square root, time calculation + display in format H/M/S, 3 memory keys M+ / M- / MRC, backspace (deletes last digit), CLEAR (last value), ALL CLEAR