Philip: Never confuse an "F" part for generic TTL, byte you every time.
I just wanted to emphasize the importance of full names of devices. how often do we see "8051" and find out the question apply to some derivative with unique characteristics causing the misunderstanding.

Harsha: I did not quite understand this. The cables Radiate what? Is there something else I should take care in my System so that it does not get effected from any radiations?
The faq entry "How can I resolve noise problems?" addresses all these concerns and is written by someone doing electronics in buses (me).

Erik