hello to all

what is difference in QA and QC

Quality Control or QC for short, in engineering and manufacturing, quality control and quality engineering are involved in developing systems to ensure products or services are designed and produced to meet or exceed customer requirements. These systems are often developed in conjunction with other business and engineering disciplines using a cross-functional approach.
Quality assurance, or QA for short, is the activity of providing evidence needed to establish quality in work, and that activities that require good quality are being performed effectively. All those planned or systematic actions necessary to provide enough confidence that a product or service will satisfy the given requirements for quality. :cool:

Also see these existing discussion threads:

QC and QA - Different concepts? (http://elsmar.com/Forums/showthread.php?t=24538)

and

Quality Assurance (QA) vs. Quality Control (QC) - What are the differences? (http://elsmar.com/Forums/showthread.php?t=15065)

And, there is the Wiki: Quality Assurance (http://elsmar.com/wiki/index.php/Quality_Assurance) vs. Quality Control (http://elsmar.com/wiki/index.php/Quality_control)

hello to all

what is difference in QA and QC

Just curious - are you working in QC or QA ;)