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OBD-II PIDs are codes used to request data from a vehicle, used as a diagnostic tool. Service 01 (Show current data) provides real-time information on engine and vehicle status, such as fuel trim, coolant temperature, and vehicle speed.
A disk cipher device of the Jefferson type from the 2nd quarter of the 19th century in the National Cryptologic Museum. The Jefferson disk, also called the Bazeries cylinder or wheel cypher, [1] was a cipher system commonly attributed to Thomas Jefferson that uses a set of wheels or disks, each with letters of the alphabet arranged around their edge in an order, which is different for each ...
Hexadecimal is a positional numeral system that uses sixteen symbols, usually "0"–"9" and "A"–"F", to represent numbers. It is widely used in computing and mathematics to represent binary-coded values or large decimal numbers.
Hexspeak is a form of variant English spelling using the hexadecimal digits 0123456789ABCDEF. It is used by programmers as memorable magic numbers to mark memory or data, and some words can be spelled with letters or numbers.
Learn how to specify web colors using hexadecimal format (hex triplet) or RGB values. A hex triplet is a six-digit number that represents the red, green, and blue components of a color, while RGB values are decimal numbers in the range 0 to 255.
A hex dump is a way of displaying computer data in hexadecimal format, often used for debugging, reverse engineering or forensics. Learn how to use hexdump command, see examples and compare with ASCII and Unicode.
In HTML and XML, a numeric character reference refers to a character by its Universal Character Set/Unicode code point, and uses the format: &#xhhhh;. or &#nnnn; where the x must be lowercase in XML documents, hhhh is the code point in hexadecimal form, and nnnn is the code point in decimal form.
Learn about the origins and variations of color wheels or color circles, which show the relationships between primary, secondary, and tertiary colors. Compare different models of color, such as trichromatic, subtractive, additive, and opponent process, and see examples and diagrams.