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quiz4 - Boise State University Department of Electrical and...

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Unformatted text preview: Boise State University Department of Electrical and Computer Engineering ECE 230 Digital Systems Quiz 4 — September 17 2010 Name: 1. Design a digital circuit with outputfand input x;, x", y;, ya, Let X = 1cm, be a number, where the four possible values of X, namely, 00, 01, 10, and ll, represent the four numbers 0, I, 2, 3, respectivewCSLm-iljrly, Y = by” . _ X <, represent another number with same four possible values. The outputfshould be i only Y. Otherwise,f should be 0. (a) Show the truth table forf. (b) Show the simplest possible SOPfI (e) Re-implement your SOP with NAND gate only. (d) Calculate the cost of SOP, assuming that the input variables are available in both un—complemented and complemented forms. (I s D D 5 U 0 0 l i 0 0 0 0 Li L __L "if" 1 t D Q u l \ l) i U- \ \_ 1l . i _____._. U . o i O L- ‘ d O l U G .. + '1 0 l 0 0 1 0 \ l .1 7 i L‘ U o l l t; l 0 i l i t: 0 l t '\ \ U [:9 19' {MD 'ﬁ :‘1 x ,, 5 out“? in i “l ‘lﬂ’l" *7; _ » . P . I ll?- it ;i\’ , H i kl ' " ’ n.7,. /, lb» 1 oil / ...
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