Ecen 248 Supplementary Prob1

# Ecen 248 Supplementary Prob1 - c decoder mux f =? 1 0 a d c...

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ELEN248 Supplementary Problems *REMEMBER. . in circuit diagrams, unless specified, top or right-most bit position is least significant 1 Design a circuit that multiplies 4-bit binary number by 2 ( s= 0) or divides by 2 ( s= 1)… using only a 6-bit 2-to-1 multiplexer. Ignore remainder or overflow x0 x1 7-bit x2 2-1 mux x3 s 2 Design a 3-to-8 decoder(DEC) using a) only two 1-to-4 multiplexers and one inverter b) only nand gates c) only 2-4 decoders with enables d) only 1-2 multiplexors 3 Design circuit diagram for EACH following functions using: f (a,b,c) = Σ m(0,2,3,7) g (a,b,c) = Σ m(1,2,5,6) g (a,b,c) = Σ m(0,3,5,6,7) h (a,b,c) = Σ m(0,2,3,7) + δ (1,4) i (a,b,c) = Σ m(1,2,5,6)+ δ (7) j (a,b,c) = Σ m(1,3) + δ (2,4,7) a) 3-8 decoder and an OR gate b) only One 4-1 multiplexer c) only One 2-1 multiplexer d) one 3-8 decoder and a 4-1 multiplexer e) one 3-8 decoder and a 2-1 multiplexer f) one 2-4 decoder and a 4-1 multiplexer

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4 Determine the function f following circuits b
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Unformatted text preview: c decoder mux f =? 1 0 a d c a b b decoder mux f =? d c a c decoder c mux f =? d a e d 1 e decoder mux f =? c a d 5 Convert 01011011010101011110101010110110101010 (r=2) to (r=10) number 01011011010101011110101010110110101010 (r=2) to (r=4) number 01011011010101011110101010110110101010 (r=2) to (r=8) number 01011011010101011110101010110110101010 (r=2) to (r=16) number 32120323 (r=5) to (r=10) number 32120323 (r=5) to (r=2) number 32120323 (r=5) to (r=8) number 32120323 (r=5) to (r=4) number 6 perform the follow math 2s compliment 1010111 100011 0011010 0011111 + 0110110 - 101101 + 1011101 + 0111010 1s compliment 1010111 100011 0011010 0011111 + 0110110 - 101101 + 1011101 + 0111010 sign-magnitude 1010111 100011 0011010 0011111 + 0110110 - 101101 + 1011101 + 0111010 7 Show shift-add multiplication of the following numbers (cycle by cycle) 1011 0010 A P B Cycle1 Cycle2 Cycle3 Cycle4 Cycle5 Cycle6 Do the similar for 0111 0101 0101 0011...
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## This note was uploaded on 07/08/2009 for the course ECEN 248 taught by Professor Lu during the Spring '08 term at Texas A&M.

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Ecen 248 Supplementary Prob1 - c decoder mux f =? 1 0 a d c...

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