leading edge vs trailing edge

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reyge

Joined: 23 Jan 2007
Posts: 76

30 Apr 2008 3:19 leading edge vs trailing

What is the leading edge and trailing edge of the clock?

Thanks!

RFCMOS

Joined: 05 May 2005
Posts: 165
Helped: 22

30 Apr 2008 3:32 trailing edge vs leading edge

Hello,

Have a look to this:
http://en.wikipedia.org/wiki/Rising_edge
Hope this helps.

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30 Apr 2008 3:32 Ads

reyge

Joined: 23 Jan 2007
Posts: 76

30 Apr 2008 3:59 leading edge vs trailing edge

ei thanks.. but i have already looked at it.

....... ____..........____
.......|........|........|
.___|........|____|
......a.......b.......c

Assuming that the straight lines represent the clock, which is the leading edge? a , b, or c?
how about the trailing edge?

mmelek1

Joined: 20 Apr 2002
Posts: 132
Helped: 4

30 Apr 2008 4:49 leading edge vs trailing edge

You should say positive edge (a,c) and negative edge (b)

dipal_z

Joined: 21 Apr 2005
Posts: 292
Helped: 32
Location: India

30 Apr 2008 6:26 leading edge vs trailing edge

Generally Transition fro low to high (a, c) is called leading edge and transition from high to low (b) is called trailing edge. I am not aware of any exception to this rule though.