Probably most useful to programmers, MacASCII Display will display the ASCII code--in decimal, binary, and hexadecimal--for any key you press, even accented characters and others requiring modifier keys. It can also convert blocks of text into their equivalent decimal, binary, and hexadecimal ASCII codes (or the reverse conversions).
What is new in this release:
This version is now ready for OS X 10.9 Mavericks. Also, the text conversion speed is improved for large blocks of text.