2. RAM, Logic gates and components (24%) 2.1 Consider the figures a) and b) below. Which of the figures shows logic levels of input and which is output logic levels (of the same family)? Explain! Mark the voltage levels with Vihmin, Volmax [7] 5.0 V 50 v Logic 1 Logic 1 2.4 V 20 V unpredictable unpredictable 0.8 v Logic 0 :8 V Logic 0 100 V 2.2 Implement the Boolean function F with a 2x1 multiplexer and external gates. [7] F(A,B,C,D)=NM(1,8,11,12,13,14,15) E1, E2, E3-Enable inputs Cs-chip select OE-output enable WE-write enable MREO BOE 2.3 Figure to the right shows two RAM integrated circuits together with a decoder. What is the capacity of the memory shown here? What are its width and depth? What is maximum memory to which this circuit can be expanded without additional decoders? [10] ER 333333333320 LLLLLLLL Oo oo