adaptive predictive coding (APC) -- alphabetic code -- alphanumeric code -- analog decoding -- analog encoding -- analog-to-digital converter (ADC) -- balanced code -- bar code -- Baudot code -- BCH code -- B8ZS -- binary code -- binary-coded decimal (BCD) -- binary-coded decimal notation (BCD) -- binary element -- binary notation -- bipolar signal -- bit configuration -- bit pairing -- B6ZS -- B3ZS -- code -- codec -- code character -- coded character set -- code-division multiple access (CDMA) -- comma-free code -- data network identification code (DNIC) -- delay encoding -- dense binary code -- differential encoding -- differential Manchester encoding -- digital alphabet -- dipulse coding -- direct-sequence spread spectrum -- duobinary signal -- EBCDIC -- error-correcting code -- error-detecting code -- error-detecting system -- escape character (ESC) -- filtered symmetric differential phase-shift keying (FSDPSK) -- gold code -- Gray code -- Hagelbarger code -- Hamming code -- Huffman coding -- hypertext -- linear predictive coding (LPC) -- line code -- Manchester code -- mark -- microcode -- modified AMI code -- motion compensation -- multiple frequency-shift keying (MFSK) -- multiprogramming -- n-ary code -- non-return-to-zero change-on-ones (NRZ1) -- non-return-to-zero (NRZ) -- non-return-to-zero mark (NRZ-M) -- non-return-to-zero space (NRZ-S) -- n-unit code -- paired disparity code -- parity -- reconstructed sample -- redundant code -- return-to-zero (RZ) -- run-length encoding -- scrambler -- secure transmission -- segmented encoding law -- self-synchronizing code -- shannon -- synchronization code -- time code -- time-gated direct-sequence spread spectrum -- transcoding -- two-out-of-five code -- uniform encoding -- unit-distance code -- variant -- zero-level decoder