Landscape vs Portrait

[damaltor]

Well, i usually have a landscape calculator (HP-16C) in front of my keyboard (== between me and the keyboard), which i use mostly with my right hand. if i have more elaborate calculations or am not sitting (=holding a calculator in my hands) i usually take the 41, which is nicer to use with both hands while standing because it is portrait. it does not fit between me and the keyboard though, so the landscape calculators have their point.