Please answer all parts of question 1 and question 2 in detail! Thank you!

1. (2 pts) Another way to represent unsigned integers is to use a representation called Binary Coded Decimal. In this representation, each decimal digit of an integer is represented using 4 bits as follows 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 Let ABCD represent a 4-bit binary-coded decimal number as described above. For example, the decimal digit 7 is represented in binary-coded decimal as 0111, so in this case, A-o, B 1.cs], and Ds]. A seven-segment display can be used to display each of ten decimal digits as shown below We can define a logic circuit abstractly that requires four Boolean inputs A, B, C and D representing a binary-coded decimal digit, and seven Boolean outputs s1, S2, S7 to control whether each segment is on or off to display the number represented by ABCD. A segment s, is lit if s, is 1 (true) and not lit if s, is 0 (fals S1 For example, if you feed in the binary- coded value for 7 (0111). you would get this output, which controls the display 7-Segment Controller S5 S6 7-Segment (continued on next page)