[单选题]Digital signal processing began to form as a discipline in the ( ).6l6答案窝(daanwo.com)-大学生作业答案及考资分享平台 A 1940s.6l6答案窝(daanwo.com)-大学生作业答案及考资分享平台 B 1950s.6l6答案窝(daanwo.com)-大学生作业答案及考资分享平台 C 1960s.6l6答案窝(daanwo.com)-大学生作业答案及考资分享平台 D 1980s.6l6答案窝(daanwo.com)-大学生作业答案及考资分享平台