Computer network
Baseband is digital data in their raw form (in binary, the language understood by the computer in the form of 0s and 1s - 1001 1101 1010 0011).  This allows very fast and reliable transmission over short distances; however, the media tend to make the bits interfere with each other, the range of baseband transmission is very limited.  It becomes worse with increasing speed.  Baseband technology is frequently used on LAN.