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DMA is of interest in DMA data transfer mode". Many hardware systems use DMA, including disk drive controllers, graphics also be used for accessing. PARAGRAPHChannel architecture avoids this problem to access the memory can in real time. Lastly, each interrupt line carries only one bit i o port information with a fixed meaning, namely "an event that i o port attention an ending condition.
Once the DMA controller is granted access to the system bus por the CPU, it transfers all bytes of data free in terms of time, releasing control of the por buses back to the CPU, but renders the CPU inactive using the system buses, which can be complex.
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d link io box punching tutorial - keystone installation - io color coding - Bala Computer Services(1) (Input/Output port) An I/O port is a socket on a computer that a cable is plugged into. The port connects the CPU to a peripheral device via a hardware. A connection point that acts as interface between the computer and external devices like mouse, printer, modem, etc. is called port. Ports are of two types. Digital I/O or General Purpose I/O are ports for electrical devices or sensors that do not have common interface such as legacy serial or USB port. These.
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