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在B型超声波诊断仪内设置有多种控制程序，它是超声波束的发射接收，图像的组建记存和测量等诸多功能得以协调工作的灵魂。而设置这些程序大多采用紫外线擦除可编程只读存贮器EPROM芯片作为载体的。只有编制了正常程序的芯片，才能指挥各个部件有条不紊地工作。由于长期频繁作
A variety of control programs are set in the B-type ultrasonic diagnostic apparatus, which is the soul of the coordinated work of ultrasonic beam transmission and reception, image formation and measurement and other functions. Most of these programs use UV erasable programmable read-only memory EPROM chips as carriers. Only chips with normal procedures can be used to direct each component to work in an orderly manner. Due to frequent long-term work