Aid Calculator is a simple calculator with memory, history, and deletion functions. In addition to usual memory functions, memory forward function (mf key) is provided to forward memory content to current calculation formula. History function (pr key) enables you to browse up to 10 previous records. As previous results can be picked out with memory function in the same way as the latest result, you can use them as additional memories. Deletion function (del key) allows you to correct numbers and/or operator mistyped in current formula.