Please make a typed version document with the answers so its easy for me to read and transfer

Part B: BCD. Unsigned Integer, Signed Integer, Complementary Representation 1. Convert number (8421]10 to BCD format 2. How many digits do we need to store a 9drgit unsigned decimal number in BCD format? 3. How many digits do we need to store a 9digit unsigned decimal number in binary format} 4. Convert the signed decimal number 21 to a singed binary representation. 5. Why do we need complement representation of numbers? (Highlight the keywords in your response. We only need your keywords for verifying the answer.) 6. The 8bit representation for the value 19 is 000100112. What is the 1's complement representation for 19? 1'. Convert +38 and 24 to 8bit 1's complement form and add them. Convert your result back to decimal and conrm that your answer is correct 8. The 8bit representation for the value 19 is 000100112. What is the 2's complement representation for 19? 9. Convert +38 and 24 to 8bit 2's complement form and add them. Convert your result back to decimal and conrm that your answer is correct. 10. What is the advantage of 2's complement over 1's complement? [Highlight the keywords in your response. We only need your keywords for verifying the