Describe tri-state devices
Describe the tri-state devices and explain why they are necessary in a bus oriented system?
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In multiplexed bus system, most of the devices are connected to a common bus. If two or more devices attempt to utilize the bus at similar time, then data will be lost. Therefore only one device should be allowed to use the bus at a time. One method is to connect the devices via tri-state devices, that when disabled will efficiently disconnect devices from bus.
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Abstract method: This is a method with the abstract reserved word in its header. The abstract method has no method body. Methods stated in an interface are for all time abstract. The body of an abstract method should be stated in a su
Formal argument: The definition of a method’s argument is the part of a method header. Each and every formal argument has an associated type. Whenever a method is called, the actual argument values are copied into the analogous formal arguments.
Passing by value: In this process separate memory builds for formal arguments and when any modifications done on formal variables, it will not influence the real variables. Therefore actual variables are preserved in this situation.
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