“Design and manufacture a wireless transceiver that performs mixed transmission of digital-analog signals on the same channel. Among them, the digital signal is composed of a set of 4 numbers from 0 to 9; the analog signal is a voice signal with a frequency range of 100 Hz to 5 kHz. Using wireless transmission, the carrier frequency range is 20~30MHz, the channel bandwidth is not more than 2...
What is the origin of non-standard hardware parts processing? The so-called non-standard non-standard hardware parts processing, then we must first understand what is non-standard.
In fact, non-standard means that it is not made according to the standard. General products have their own production standards in order to be common with other products. For example, the screws we commonly use; they must be standard parts. You can buy screws of the same specification at any store, and you can use them all. Standards, in the form of national standards, local standards, industry standards, etc., complement each other. Non-standard commodities or spare parts refer to commodities that are used less frequently, or spare parts specially made for a certain commodity, and it is not easy to buy general-purpose or substitutes. Sometimes non-standard parts are done deliberately in order to protect the uniqueness of their own production and maintenance. Therefore, the processing of non-standard hardware parts also means the same, that is, the processing of non-standard parts is not general, but is for the specific machining of a certain machine, the products produced, in order to protect their products, for specialization, and differentiation. The parts produced by chemistry.
What are the daily precautions for non-standard hardware parts processing? According to the above literal meaning, we can know that non-standard hardware parts are different from general hardware parts. Therefore, we must carefully read the logo on the drawing, because different designers or different countries who want to engage in non-standard hardware parts processing must carefully read the content and do it, so as to avoid a lot of trouble.