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3a
The four essential elements of a comuter or input, output, processing and storage of data.
It offloads actual IO processing from CPU to the device hardware. This frequently allows the IO device to perform its operations on cycles that the CPU could not have made use of anyway, resulting in a double benefit.
3a. Confirmed
FALSE
Blocking IO: The program will pause and wait until the IO operation is complete before resuming. This technique can lead to inefficiency if there are multiple IO operations. Non-blocking IO: The program continues to run while waiting for the IO operation to complete. This allows for better efficiency when handling multiple IO operations simultaneously. Asynchronous IO: The program initiates the IO operation and continues executing, without waiting for the operation to complete. A callback function is usually provided to handle the result once it is available. This allows for better performance in handling large numbers of IO operations.
ALE is a signal that means that the data bus contains the lower order address bus values. External hardware should strobe the data bus during ALE time, and lock it on the falling edge of ALE.
Peripheral-Mapped IO is IO that is selected when the IO/M- line is high.
If you are referring to the Italian word 'Io' which can be used in the sentence 'Io Sono', Io means I. Io sono means I am.
First, I think you are referring to Io (pronounced ai-o). See the attached link for information.
Peripheral-Mapped IO is IO that is selected when the IO/M- line is high.
Memory mapped IO is one where the processor and the IO device share the same memory location(memory) while IO mapped IO is one where the processor and the IO device have different memory located to each other.