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  2. Phase-shift keying - Wikipedia

    en.wikipedia.org/wiki/Phase-shift_keying

    The binary data stream is split into the in-phase and quadrature-phase components. These are then separately modulated onto two orthogonal basis functions. In this implementation, two sinusoids are used. Afterwards, the two signals are superimposed, and the resulting signal is the QPSK signal. Note the use of polar non-return-to-zero encoding ...

  3. Binary-to-text encoding - Wikipedia

    en.wikipedia.org/wiki/Binary-to-text_encoding

    Binary-to-text encoding. A binary-to-text encoding is encoding of data in plain text. More precisely, it is an encoding of binary data in a sequence of printable characters. These encodings are necessary for transmission of data when the communication channel does not allow binary data (such as email or NNTP) or is not 8-bit clean.

  4. Binary code - Wikipedia

    en.wikipedia.org/wiki/Binary_code

    Binary-coded decimal(BCD) is a binary encoded representation of integer values that uses a 4-bit nibbleto encode decimal digits. Four binary bits can encode up to 16 distinct values; but, in BCD-encoded numbers, only ten values in each nibble are legal, and encode the decimal digits zero, through nine.

  5. Frequency-shift keying - Wikipedia

    en.wikipedia.org/wiki/Frequency-shift_keying

    Audio frequency-shift keying (AFSK) is a modulation technique by which digital data is represented by changes in the frequency ( pitch) of an audio tone, yielding an encoded signal suitable for transmission via radio or telephone. Normally, the transmitted audio alternates between two tones: one, the "mark", represents a binary one; the other ...

  6. Binary number - Wikipedia

    en.wikipedia.org/wiki/Binary_number

    A binary number is a number expressed in the base -2 numeral system or binary numeral system, a method for representing numbers that uses only two symbols for the natural numbers: typically "0" ( zero) and "1" ( one ). A binary number may also refer to a rational number that has a finite representation in the binary numeral system, that is, the ...

  7. Encoder (digital) - Wikipedia

    en.wikipedia.org/wiki/Encoder_(digital)

    An encoder (or "simple encoder") in digital electronics is a one-hot to binary converter. That is, if there are 2 n input lines, and at most only one of them will ever be high, the binary code of this 'hot' line is produced on the n -bit output lines. A binary encoder is the dual of a binary decoder . If the input circuit can guarantee at most ...

  8. Certificate signing request - Wikipedia

    en.wikipedia.org/wiki/Certificate_signing_request

    In public key infrastructure (PKI) systems, a certificate signing request ( CSR or certification request) is a message sent from an applicant to a certificate authority of the public key infrastructure (PKI) in order to apply for a digital identity certificate. The CSR usually contains the public key for which the certificate should be issued ...

  9. One-hot - Wikipedia

    en.wikipedia.org/wiki/One-hot

    One-hot. In digital circuits and machine learning, a one-hot is a group of bits among which the legal combinations of values are only those with a single high (1) bit and all the others low (0). [ 1] A similar implementation in which all bits are '1' except one '0' is sometimes called one-cold. [ 2] In statistics, dummy variables represent a ...