From ESB Consultancy:
ESBProgCalc Pro is a Programmers Calculator that supports full precedence, large range of operations (and, or, xor, not, nand, nor, xnor, shl, shr, rol, ror, neg, mod, etc), Paper Trail, Clipboard Support, History of results, Integrated Help, Expression Editing, and much more. The Calculator also has an expression editor that allows the data that has been entered can be then edited and recalculated. Precedence can be turned off for those who do not wish it.
What's new in this version:
Version 2.1.1 fixes problem with Keyboard input of 'F'.