半导体集成电路通信电路系列和品种 双音多频电路系列品种
Series and products of communication circuits for semiconductor integrated circuits--Products of dual-tone multi-frequency circuits
标准状态
发布于:1992-12-17
实施于:1993-08-01
已废止
Series and products of communication circuits for semiconductor integrated circuits--Products of dual-tone multi-frequency circuits