Hex and Ascii Tables for iPhone and iPod touch provides a great reference to programmers and electronics engineers.
The HEX screen shows all 16 hexadecimal numbers and their corresponding decimal and binary representations.
The ASCII screen shows the 128 ASCII codes with references to both their hex and decimal values.
This is a useful reference tool that you can now carry on your iPhone or iPod touch, and it is available in the office and out in the field. Programmers will appreciate having this available on an accessory screen so that they do not have to have reference tables taking up valuable screen space. Lines can be highlighted for the times you have to keep coming back to the same number.