Primarily for converting between number bases, but also with simple calculator functions and the advantage of showing simultaneously the same number in Decimal, Octal, Hex, Binary and ASCII. Optional base 3-9 capability (replaces octal). Most calculators display only a single row of digits - this one displays five lines at once. 63-bit capability. Calculator functions AND, OR, XOR, NOT and Shift included. Copy and paste to clipboard. It is designed for the buttons to be pressed on the screen