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please answer the following questions!!!! 1. Draw the truth table and block diagram for a 2:4...

please answer the following questions!!!!

1. Draw the truth table and block diagram for a 2:4 decoder. Use positive logic inputs and a negative logic (also reffered to as an active low or inverted) enable line and negative logic outputs 2. Design a circuit to implement the 2: decoder block diagram in question 1 using only NAND gates and inverters.

4. Use a 4:1 multiplexer and a minimum number of exterel gates to implement a solution to F(0,3,4,7,10)

5. Use two 2:4 decoders of the type described in question one above with minimum external locgic to implement a solution to the following (simplified) expression.

F2(xyz) = notXnotY + XYnotZ

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