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Notes:


Simple output is used when the receiving device is dumb (cannot reply to the sender). The sender assumes that the receiving device can always receive the information on the data bus. A typical application example is turning lights on and off. The microprocessor does not generally check to see whether the lights have been turned on or off in response to the command sent.

Simple strobe is used when the receiving device needs to be notified that the data has been sent. The sender assumes that the receiving device can always receive the information on the data bus. A latch receiving data constitutes an example of simple strobing.