Introduction: Usually, this standard needs to be used in conjunction with GB/T 17573-1998 and GB/T16464-1996 standards. In GB/T 17573 and GB/T16464 standards, all the following basic information can be found: - Terminology; - Text symbols; - Basic ratings and characteristics—— Test method; - reception and reliability
2 Scope: This standard provides standards for the following types or categories of devices: - Combined and sequential digital circuits; - Memory integrated circuits; - Microprocessor integrated circuits; -—— Charge transfer devices. 3 Terminology and textual symbols 1 Terminology of combination and sequential integrated circuits 1.1 General terminology Signal is the physical representation of information. Digital signal is the state or change of a physical quantity related to time, which has a limited number of non overlapping value ranges. Digital signals can be used for information transmission or processing. Considering the actual situation, some simplified definitions have been selected below. For digital circuits, there is generally no misunderstanding or ambiguity. 1.1.1 The digital signal non overlapping range is a finite physical quantity that changes over time and is used for information transmission and processing
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China