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DEFINITION: In a computer or on a network, a bus is a transmission path on which signals are dropped off or picked up at every device attached to the line. Only devices addressed by the signals pay attention to them; the others discard the signals. According to Winn L. Rosch, the term derives from its similarity to autobuses that stop at every town or block to drop off or take on ridersIn general, the term is  … 
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SOFTWARE DEMO: Complex microprocessors lie at the heart of every electronic device and embedded system in use today - from mobile phones to brain scanners. Such products demand sophisticated software to get the job done, and that's where operating systems come in.
Posted: 14 Apr 2009 | Premiered: 14 Apr 2009

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BUSES DEFINITION (continued): … In a computer or on a network, a bus is a transmission path on which signals are dropped off or picked up at every device attached to the line. Only devices addressed by the signals pay attention to them; the others discard the signals. According to Winn L. Rosch, the term derives from its similarity to autobuses that stop at every town or block to drop off or take on ridersIn general, the term is used in two somewhat different contexts:(1) A bus is a network topology or circuit arrangement in which all devices are attached to a line directly and all signals pass through each of the devices. Each device has a unique identity and can recognize those signals intended for it.(2) In a computer, a bus is the data path on the computer's motherboard that interconnects the microprocessor with attachments to the motherboard in expansion slots (such as hard disk drives, CD-ROM drives, and graphics adapters).
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