12-Digit EL520XTBBK Scientific Calculator is built for students, finance users and professionals who need dependable calculations beyond basic arithmetic. 12-digit, 2-line LCD display. 420 functions. 4 modes: normal, stat, complex, and equation. 8 temporary and 4 formula memory buttons. 3 variable linear equation solvers. It is well suited to classrooms, training rooms, home offices and workplace planning where quick, repeatable calculations matter. A strong fit for Canadian school supply lists, office supply orders and individual users who want a purpose-built calculator.