Please fill the table, including I and Di$,$ and please describe how the answer is derived.

The content of $AC$ in the basic computer is hexadecimal $A937$ and the initial value of $E$ is $1.$ Determine the contents of $AC,E,PC,AR,$ and IR in hexadecimal after the execution of the SZA instruction. The initial value of $PC$ is hexadecimal $021.$ Show all the contents of the register after each clock pulse.