Digital Data Transmission Each single bit can be represented by a signal element Each signal element takes some time to send Bit rate the number of bits that can be sent out per unit of time 110011100 time4 Digital Data Transmission time 1 1 0 0 1 1 1 0 0 Each single bit can be represented by a signal element. Each signal element takes some time to send. Bit rate: the number of bits that can be sent out per unit of time