Please help me on solving these following questions! Thank you!

11. Use the following black box model for a standard 2:4 decoder to complete the following timing diagram. DEC_4T16 S 0 X 0x8 X 063 X OxCX 0x2 X OuF X 0x7 X Ox5 12. Based on the standard 2:4 Decoder below, complete the following timing diagram by entering the values for signals sl and s2 that would generate the listed output waveforms. Assume that propagation delays are negligible. Be sure to annotate you solution to this problem. 24 Decode SOO 13. Design a 2's complement validity checking circuit for an RCA module. The single output of the circuit indicates when the result of the addition is valid. 11. Use the following black box model for a standard 2:4 decoder to complete the following timing diagram. DEC_4T16 S 0 X 0x8 X 063 X OxCX 0x2 X OuF X 0x7 X Ox5 12. Based on the standard 2:4 Decoder below, complete the following timing diagram by entering the values for signals sl and s2 that would generate the listed output waveforms. Assume that propagation delays are negligible. Be sure to annotate you solution to this problem. 24 Decode SOO 13. Design a 2's complement validity checking circuit for an RCA module. The single output of the circuit indicates when the result of the addition is valid