8. Binary addition: Perform the following additions of 4-bit unsigned binary numbers. Write the final result in binary and hexadecimal. Indicate whether or not the sum overflows a 4-bit result. Each part has 3 answers. Hint: You can check your results by writing the numbers (including the results) as their decimal equivalents. (a) 0xD + 0x4 (i.e., 11012 +01002) (b) 0x8+ 0x9 (i.e., 10002 + 10012). (c) 0x7+ 0x8 (i.e., 01112 + 10002) (d) 0x7+ 0x2 (i.e., 01112 +00102) 9. Binary addition: Now suppose the binary values in Problem 8 were 4- bit two's complement numbers (instead of unsigned binary numbers). What is the result of each addition (in binary and hexadecimal)? Also say if each result overflows or not. Each part has 3 answers.

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