On Sat, 06 Dec 2008 11:09:39 -0600, John Fields
wrote:
On Sat, 06 Dec 2008 08:17:33 +0000, Eeyore
wrote:
gore wrote:
I work at an electronics contract manufacturimg facility. We do work for
several companies and I wonder why they use different labels on the
schematics and pcb's to refer to IC's. Some of them have a U1, an A1, and
X1, or an IC1. Why do they do this? Is there a standard used to label IC's
in a schematic? Just curious why this is.
X should be a crystal.
---
No, a crystal is designated with a 'Y'.
What you're probably thinking about is the abbreviation for 'crystal',
'XTAL'.
---
A would be an amplifier (I haven't ever seen that btw)
---
Then how would you know?
Anyway, it's not for 'amplifier, it's for 'assembly'.
---
IC is self-explanatory and is widely used in Europe
U is some weird US practice. U for what ?
---
Unit.
JF
HB: Hierarchical Block ;-)
...Jim Thompson
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