電線電纜廠家-數字通信

數(shu)(shu)字(zi)(zi)(zi)(zi)通(tong)信(xin)(xin)（digital telecommunications）是用(yong)數(shu)(shu)字(zi)(zi)(zi)(zi)信(xin)(xin)號作為載體來傳輸(shu)消(xiao)息，或(huo)用(yong)數(shu)(shu)字(zi)(zi)(zi)(zi)信(xin)(xin)號對載波進行數(shu)(shu)字(zi)(zi)(zi)(zi)調制后再傳輸(shu)的通(tong)信(xin)(xin)方式。它可(ke)傳輸(shu)電報、數(shu)(shu)字(zi)(zi)(zi)(zi)數(shu)(shu)據(ju)等數(shu)(shu)字(zi)(zi)(zi)(zi)信(xin)(xin)號，也可(ke)傳輸(shu)經過數(shu)(shu)字(zi)(zi)(zi)(zi)化處(chu)理的語聲和(he)圖(tu)像等模擬信(xin)(xin)號。

電(dian)線(xian)電(dian)纜廠家(jia)用數(shu)(shu)字(zi)(zi)(zi)形(xing)式傳輸(shu)消息或用數(shu)(shu)字(zi)(zi)(zi)形(xing)式對載波(bo)信(xin)號(hao)進(jin)行(xing)調制(zhi)后再傳輸(shu)的(de)(de)通(tong)信(xin)方式。常規的(de)(de)電(dian)話和電(dian)視都屬(shu)于模(mo)擬(ni)通(tong)信(xin)。電(dian)話和電(dian)視模(mo)擬(ni)信(xin)號(hao)經數(shu)(shu)字(zi)(zi)(zi)化后，再進(jin)行(xing)數(shu)(shu)字(zi)(zi)(zi)信(xin)號(hao)的(de)(de)調制(zhi)和傳輸(shu)，便稱為數(shu)(shu)字(zi)(zi)(zi)電(dian)話和數(shu)(shu)字(zi)(zi)(zi)電(dian)視。以計算機(ji)為終端機(ji)的(de)(de)相(xiang)互(hu)間(jian)的(de)(de)數(shu)(shu)據通(tong)信(xin)，通(tong)過數(shu)(shu)字(zi)(zi)(zi)通(tong)信(xin)網(wang)絡線(xian)的(de)(de)連接，信(xin)號(hao)本身(shen)就是數(shu)(shu)字(zi)(zi)(zi)形(xing)式，而屬(shu)于數(shu)(shu)字(zi)(zi)(zi)通(tong)信(xin)。衛(wei)星通(tong)信(xin)中采(cai)用時分或碼分的(de)(de)多路(lu)通(tong)信(xin)也屬(shu)于數(shu)(shu)字(zi)(zi)(zi)通(tong)信(xin)。