I had the previous model and was very pleasantly surprised when I found out in this model that the numbers on the display etwaas were larger. At the age we become a little more sensitive in terms of eyesight;) We must for our tests use no programming enabled TR and the old man could not, so far as I know, this one has a limited (2) Programiermöglichkeit if I do that? have read properly. For this, I can but nothing;))) Get it eh not apply and therefore it is not necessary to inform the audit committee informed) to understand key operation, easy implementation and for the basic arithmetic operations fully sufficient.