Answered! a) Explain why tri-state buffers are used in designing memory chips. b) Show internal organization of a 16 times 4…

a) Explain why tri-state buffers are used in designing memory chips. b) Show internal organization of a 16 times 4 ROM chip. c) Design a 4 times 4 memory system by using 4 times 2 ROM chips. d) Design a 8 times 2 memory system by using 4 times 2 ROM chips. e) Design a 8 times 8 memory system by using 4 times 2 ROM chips. f) Design a 32 times 8 memory system by using 16×4 ROM chips.