Sharp scientific calculator

I use this in nursing school as well as when taking chemistry and physics in college as it is an advanced d.a.l. sharp calculator that turns on with the light or the Sun includes second f button different modes sin, cos, tan pi, etc It has a setup menu with mode selection so you can put it in normal or statistics mode also the setup menu you can put it in a display format a scientific fixed or engineering binary etc EL-531XT