1- Design a 14KB memory system utilizing 2KB memory (3 chips), and 4KB memory (2 Chips). Use 3- to-8 decoder 74LS138 as a decoding circuit and other needed logic. The starting address of this memory system is 78000H. a. Draw the memory system with the decoding circuit. Assume a full address decoding scheme. Show all circuit connections and signals b. What is the start and end address of every memory chip? 2- Consider the decoding circuit shown below - A 64KB memory chip is used to build a memory system with the starting address of 7000H. A block of memory locations in the memory chip are damaged. 64KB FFFFH 3217H 3110H 0000H Damaged block 7FFFFH 73217H 73110H 70000H 1M addressing space a- Draw the decoding circuit to repair the above memory system. b- What is the start and end address of the repaired area. Replace this block 3- Design a wait state circuit that generates 4 wait stats using 4-DFF.