I am Quality engineer, in simple mounted technology department,, this department my responsibilities incoming Quality Control . Incoming material like inductor, capacitor , resistor, pcb check and verify and pass for assembly and material's spool manufacturing execution system paste QR and scan and write in bill of material for the record. Quality assurance comprises administrative and procedural activities implemented in a quality system so that requirements and goals for a product, service or activity will be fulfilled.[3] It is the systematic measurement, comparison with a standard, monitoring of processes and an associated feedback loop that confers error prevention.[6] This can be contrasted with quality control, which is focused on process output.While to err is human, sometimes the cost of a mistake might be just too high. History knows many examples of situations when software flaws have caused billions of dollars in waste or even lead to casualties: from Starbucks coffee shops being forced to give away free drinks because of a register malfunction, to the F-35 military aircraft being unable to detect the targets correctly because of a radar failure. In order to make sure the released software is safe and functions as expected, the concept of software quality was introduced. It is often defined as “the degree of conformance to explicit or implicit requirements and expectations”. These so-called explicit and implicit expectations correspond to the two basic levels of software quality: Functional – the product’s compliance with functional (explicit) requirements and design specifications. This aspect focuses on the practical use of software, from the point of view of the user: its features, performance, ease of use, absence of defects. Non-Functional – system’s inner characteristics and architecture, i.e. structural (implicit) requirements. This includes the code maintainability, understandability, efficiency, and security. The structural quality of the software is usually hard to manage: It relies mostly on the expertise of the engineering team and can be assured through code review, analysis and refactoring. At the same time, functional aspect can be assured through a set of dedicated quality management activities, which includes quality assurance, quality control, and testing.There are five 5S phases. They can be translated from the Japanese as "sort", "set in o