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Perec used Graeco-Latin squares or "bi-squares" to distribute these elements across the 99 chapters of the book. A bi-square is similar to a sudoku puzzle, though more complicated, as two lists of elements must be distributed across the grid. In the pictured example, these two lists are the first three letters of the Greek and Latin alphabets ...
The user guide engraved into a model of the Antikythera Mechanism. User guides have been found with ancient devices. One example is the Antikythera Mechanism, [1] a 2,000 year old Greek analogue computer that was found off the coast of the Greek island Antikythera in the year 1900.
Ariane 64 (A64), with four P120C boosters, has a liftoff weight of around 860,000 kg (1,900,000 lb) [9] and is intended for commercial dual-satellite launches [8] of up to 11,500 kg (25,400 lb) into GTO and 21,500 kg (47,400 lb) into LEO. Like Ariane 5, it will be able to launch two geosynchronous satellites together.
TRI 60-2 080: This model powered early Lakshya PTA drones. TRI 60-2 088: This model powered the flight test vehicles of the Northop NV-144 next-generation drone. TRI 60-2 089: This model powers the RBS-15 anti-ship missile. TRI 60-2 206: This model powers the Aerospatiale C.22 target drone, and is slight uprated to 4.0 kN (900 lbf).
Märklin Digital was among the earlier digital model railway control systems. It was a comprehensive system including locomotive decoders (based on a Motorola chip), central control (Märklin 6020/6021), a computer interface (Märklin 6050), turnout decoders (Märklin 6083), digital relays (Märklin 6084) and feedback modules (Märklin s88/6088).
The Diagnostic and Statistical Manual of Mental Disorders (DSM; latest edition: DSM-5-TR, published in March 2022 [1]) is a publication by the American Psychiatric Association (APA) for the classification of mental disorders using a common language and standard criteria. It is an internationally accepted manual on the diagnosis and treatment of ...
The avoirdupois pound is legally defined as a measure of mass, [25] but the name pound is also applied to measures of force. For instance, in many contexts, the pound avoirdupois is used as a unit of mass, but in some contexts, the term "pound" is used to refer to "pound-force". The slug is another unit of mass derived from pound-force.
Digital electronics is a field of electronics involving the study of digital signals and the engineering of devices that use or produce them. This is in contrast to analog electronics which work primarily with analog signals.