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i want to know what ua741 and lm555 names represent

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Wendy

Wendy

Joined Mar 24, 2008
23,798
They are components. The 741 and 555 are the generic names, several different manufacturers make these components. This is where names like the LM741 or NE555 come in, the letters tell you WHO made it.
 
beenthere

beenthere

Joined Apr 20, 2004
15,819
The manufacturer who first makes a device is free to label it in about any way they like.

Just in case you are being very literal, 741 stands for an obsolete op amp that had the distinction of having the first internal compensating capacitor.

A 555 is a timing IC that uses an external RC network to control the time period.
 
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