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Unformatted text preview: H H L on off on off off off on on L H H H 1 on off on off on off on off L Problem 4. You are given the following circuit which has two inputs A and B and output OUT. (The inverters needed to obtain A’ and B’ are not shown for simplicity) A B C D OUT A A A’ A’ B’ B’ B B Q1 Q3 Q7 Q5 Q4 Q6 Q2 Q8 A’∙C’∙D’ + B’∙C’∙D’ ENGRD2300: Introduction to Digital Logic Fall 2008 a) Write a function table for this circuit. A B Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 OUT L L on off off on on off off on H L H on off off on off on on off L H L off on on off on off off on L H H off on on off off on on off H b) Draw a logic diagram for this circuit using AND gates, OR gates and inverters. (Include the inverters needed to obtain A’ and B’.) Problem 5. Draw a transistor level CMOS circuit for (A’·(B+C))’. Can it be done using only 6 transistors? This circuit requires at least 8 transistors. A Z B C A B A∙B+A’∙B V cc...
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This note was uploaded on 05/09/2009 for the course ENGRD 2300 taught by Professor Albonesi/long during the Fall '07 term at Cornell.
- Fall '07