I am having problem understanding this problem can some one help me with this?

Assume that an MC1408 DAC is attached to Port T of an HC12 Microprocessor as shown below. Verify that the program below outputs 8 different values to the DAC and determine the output voltage (Vout) after each output operation. Show your work in the space below.

 

Welcome.

Your diagram makes no sense what so ever

 

Do the calculations of the for loop and then find the output voltage of the DAC according to the numbers calculated and the DAC resolution and reference voltage.

 

Have you tried reading the datasheet?
http://www.datasheetcatalog.org/datasheet/philips/MC1408-8_3.pdf

You can find your formula in page 7.