eral Questions: (a) What does GPIO stand for and what is its purpose? (b) Most G

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eral Questions: (a) What does GPIO stand for and what is its purpose? (b) Most GPIO interfaces allow alternative functions for each pin they represent. Give an example of an alternative function for a GPIO pin. (c) What is the difference between microcode and machine code? Be very specific and use diagrams if that helps your explanation. (d) List all registers used in the ARM architecture and describe their overall purpose. Include in this description the standard uses for function calls. Just listing the registers will only get you half credit. within its code, how do you handle returning back to the calling routine? In other words, how do you preserve the return address for the first call? (e) If you are writing a subroutine in assembly language that calls a second subroutine

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Q a) What does GPIO stand for and what is its purpose?

Answer)

GPIO stands for the General-purpose input/output is a digital signal pin on the Integrated circuit chip which does not have a specific function. The function of the GPIO is custom which can be controlled by the user using software. GPIO is unused originally but when used the programmer will define the definition and the implementation of the GPIO. GPIO pins are found on the multi-function chips such as video cards.

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