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  2. Manchester code - Wikipedia

    en.wikipedia.org/wiki/Manchester_code

    In telecommunication and data storage, Manchester code (also known as phase encoding, or PE) is a line code in which the encoding of each data bit is either low then high, or high then low, for equal time. It is a self-clocking signal with no DC component.

  3. Line code - Wikipedia

    en.wikipedia.org/wiki/Line_code

    FDM. Multiplexing. v. t. e. In telecommunication, a line code is a pattern of voltage, current, or photons used to represent digital data transmitted down a communication channel or written to a storage medium. This repertoire of signals is usually called a constrained code in data storage systems. [1]

  4. Barcode - Wikipedia

    en.wikipedia.org/wiki/Barcode

    A barcode or bar code is a method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths, spacings and sizes of parallel lines.

  5. Coding theory - Wikipedia

    en.wikipedia.org/wiki/Coding_theory

    Coding theory is the study of the properties of codes and their respective fitness for specific applications. Codes are used for data compression, cryptography, error detection and correction, data transmission and data storage.

  6. QR code - Wikipedia

    en.wikipedia.org/wiki/QR_code

    The message is encoded using a (255,248) Reed Solomon code (shortened to (26,19) code by using "padding") that can correct up to 2 byte-errors. A total of 26 code-words consist of 7 error-correction bytes, and 17 data bytes, in addition to the "Len" (8 bit field), "Enc" (4 bit field), and "End" (4 bit field).

  7. Comment (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Comment_(computer_programming)

    In computer programming, a comment is a programmer-readable explanation or annotation in the source code of a computer program. They are added with the purpose of making the source code easier for humans to understand, and are generally ignored by compilers and interpreters.

  8. Universal Product Code - Wikipedia

    en.wikipedia.org/wiki/Universal_Product_Code

    The Universal Product Code (UPC or UPC code) is a barcode symbology that is used worldwide for tracking trade items in stores. The chosen symbology has bars (or spaces) of exactly 1, 2, 3, or 4 units wide each; each decimal digit to be encoded consists of two bars and two spaces chosen to have a total width of 7 units, in both an "even" and an ...

  9. Source lines of code - Wikipedia

    en.wikipedia.org/wiki/Source_lines_of_code

    Source lines of code (SLOC), also known as lines of code (LOC), is a software metric used to measure the size of a computer program by counting the number of lines in the text of the program's source code.

  10. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    This is a list of Hypertext Transfer Protocol (HTTP) response status codes. Status codes are issued by a server in response to a client's request made to the server. It includes codes from IETF Request for Comments (RFCs), other specifications, and some additional codes used in some common applications of the HTTP.

  11. Bresenham's line algorithm - Wikipedia

    en.wikipedia.org/wiki/Bresenham's_line_algorithm

    Running this algorithm for from (0,1) to (6,4) yields the following differences with dx=6 and dy=3: D=2*3-6=0. Loop from 0 to 6. * x=0: plot(0, 1), D≤0: D=0+6=6. * x=1: plot(1, 1), D>0: D=6-12=-6, y=1+1=2, D=-6+6=0. * x=2: plot(2, 2), D≤0: D=0+6=6. * x=3: plot(3, 2), D>0: D=6-12=-6, y=2+1=3, D=-6+6=0.