The major objective of this article is to know about test and measurement technology. Test and measurement technology has approach an incredibly extended way in the precedent hundred years. The oscilloscope motionless has its rest in the laboratory but with the speedy improvement of PC based instrumentation and the succeeding emergence of technologies such as PXI it is clear that today’s test applications stretch remote wider than ever before. Given the quick pace of improvement and innovation it is unavoidable that test instrumentation will only continue to progress.