用TTL计数器和译码器组成数传MODEM

陈伟郭守清

USING COUNTER AND DECODER OF TTL TO CONSTITUTE MODEM

Chen Wei Guo Shou-qing

西南石油大学学报(自然科学版) . 1989, (3): 105 -110 . DOI: 10.3863/j.issn.1000-2634.1989.03.014