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Post by deathstep on May 9, 2008 12:52:26 GMT -5
so i may be getting my hands on alot of original texas instruments voice synthesis chips that indeed are the same chips that ran the speak & x's. in addition to that im getting some old ti dram chips and some other goodies.
if i would get these synthesis chips- would anyone buy them from me? its an investment so i have to know theres a demand. would YOU buy some?
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Post by yuanyuan2018 on Apr 7, 2019 21:33:46 GMT -5
HDI plates employ lamination method to produce the plate. Taking the ordinary multi-layer plate as the core one to accumulate layers, coupled with drilling and the procession of metallization inside the holes, circuits linking the layers can be connected more firmly. Compared with the ordinary multi-layer plate with through holes alone, HDI can reduce the number of through holes by setting the blind holes and buried holes in a more accurate way, which can greatly save the wiring area for PCB and increase the density of the electronics significantly. Therefore, they rapidly take the place of multi-layer plate in smartphones.http://www.pcbindex.com
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Post by Pcbindex11 on Apr 28, 2019 20:41:54 GMT -5
The size and number of routing layers of PCB should be determined in the preliminary stage of designing. The number of routing layers and ways of stack-up will directly influence routing and resistance of the printed wiring. Determining the size of the board will be beneficial to confirming the ways of stacking up so as to achieve the desired designing effect. At the current stage, the cost differences between different multi-layer boards. When designing, many circuit layers must be adopted and make the coating copper evenly spread1.http://www.pcbindex.com/
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