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October 25, 1988


By CBR Staff Writer

Toshiba Corp has developed a four-layer circuit board just 0.38mm thick and promises samples next month and November and volume in October 1989: when used as the basis of a static random access memory board, it can carry up to six 1M-bit statics; Toshiba says the breakthrough to four from two layers was achieved by use of a central epoxy resin board, with only adhesive sticking it to the copper interconnections on either side.

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