Computer Hardware The MTBF Of Automatic Test And Analysis And Quality Improvement Methods

Nowadays, computer has become an integral part of life, and in this background, the reliability and security of the computer has become a very prominent problem. Family, work, companies and airlines, Banks, financial, and transportation, etc. can’t afford the errors of what computer do in operation, otherwise will cause a great loss, so the computer industry has begun to pay attention to the safety and reliability of the computer hardware, also raises the concept of reliability and MTBF testing and automation.And at present, the computer hardware in product research and development phase of the investment proportion has to tilt test, especially some famous enterprises, hardware testing personnel quantity and technical requirements are relatively high. Hardware test aim is to find errors, when users use the product in order to achieve zero defect. In this paper, detailed introduces the content about the MTBF, and examples to analyze the MTBF of computer hardware of automatic test and quality improvement methods. MTBF (Mean Time Between Failure) is a time to reflect product quality concept, is also a product reliability index to measure, it can embody the product function ability within the allotted time. MTBF index is in the interval between two products, is the computer this kind of complex electronic product quality level of a kind of evaluation index. And "reliability" refers to the product under prescribed conditions and provisions time, the ability to function and the product or part of it cannot or will not be able to complete rules is out of order, the product of the total number of failures and life is the ratio of the total number of units, called "failure". And automated testing is converted to drive test behavior into machine to perform a process. Hardware test automation is to point to in the case of don’t need to human, on the motherboard, CPU, video card, sound card, etc. Comprehensives, rapid, systematic automatic test, according to data diagnosed shortcomings existing in the computer’s hardware. Its running environment includes demand changes are frequent, project cycle is long enough, automated test scripts can be repeated use, otherwise it doesn’t make sense to implement; And compared with the ordinary testing, test automation has the advantage of its high reusability, automatic, accurate result this time.In introduced in this paper after MTBF and reliability as well as test automation concept, through example using automated test and analysis the main factor affecting the MTBF hardware test, due to the bad motherboard must share in the hardware is very large, high rate of64%, so this article is the quality problem of the computer motherboard method analysis and research. Motherboard failure lies in can’t boot, boot interface, no display, often freezes, boot screen to wait for a phenomenon, this paper make analysis from two aspects of reasons and component interface circuit, and the components of welding, high failure rate of components, quality cost, high temperature aging the several aspects put forward the solution, though this plan is not very mature, but believe that with the help of the classmates and teachers, will be a perfect success in the end.