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When a key is pressed, released or held down, the keyboard sends a packet of information known as a scan code to the computer. The protocol used to transmit these scan codes is a bidirectional serial communication, based on four wires: Vcc (5 volts), ground, data and clock. Clock and data signals are identically generated.
ISO-8859-1, Windows-1252, and the original 7-bit ASCII were the most common character encodings on the World Wide Web until 2008, when UTF-8 overtook them. ISO/IEC 4873 introduced 32 additional control codes defined in the 80–9F hexadecimal range, as part of extending the 7-bit ASCII encoding to become an 8-bit system. Unicode
Our Lady of the Angels School fire A monument to the victims at the Queen of Heaven Cemetery Location of Our Lady of the Angels School Date December 1, 1958 ; 65 years ago (1958-12-01) Location Humboldt Park, Chicago, Illinois Coordinates Type School fire Cause Not officially determined Deaths 95 On Monday, December 1, 1958, a fire broke out at Our Lady of the Angels School in Chicago ...
Zone 1 classified location An area where ignitable concentrations of flammable gases, vapors or liquids are likely to exist under normal operating conditions. As a guide for Zone 1, this can be defined as 10–1000 hours per year or 0.1–10% of the time. Class I, Division 2 or Zone 2 classified locations
QWERTY ( / ˈkwɜːrti / KWUR-tee) is a keyboard layout for Latin-script alphabets. The name comes from the order of the first six keys on the top letter row of the keyboard: Q W E R T Y. The QWERTY design is based on a layout included in the Sholes and Glidden typewriter sold via E. Remington and Sons from 1874.
Reverse triiodothyronine (3,3′,5′-triiodothyronine, reverse T 3, or rT 3) is an isomer of triiodothyronine (3,5,3′ triiodothyronine, T 3 ). Reverse T 3 is the third-most common iodothyronine the thyroid gland releases into the bloodstream, at 0.9%; tetraiodothyronine (levothyroxine, T 4) constitutes 90% and T 3 is 9%.
A climograph is a graphical representation of a location's basic climate. Climographs display data for two variables: monthly average temperature. monthly average precipitation. [1] These are useful tools to quickly describe a location's climate .
Hewlett and Packard's first financially successful product was a precision audio oscillator known as the HP 200A, which used a small incandescent light bulb (known as a "pilot light") as a temperature dependent resistor in a critical portion of the circuit, and a negative feedback loop to stabilize the amplitude of the output sinusoidal waveform.