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Please solve Question 2
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Please solve Question 2
Please solve Question 2
Lebanese University Faculty of Technology Department of Communications and Computer Networks Engineering الجامعة اللبنانية كلية التكنولوجيا قسمينة شبكات المعلوماتية والاتصالات الجامعة اللميعا ميمة كل الكمونوشا First Year Semester 1 2020/2021 Final Exam Digital Electronics 1 Second session Closed Book Duration: 1.5 hour September 27, 2021 Question / (3 points) Consider the following Boolean function, F, of four variables A.B.C and D: F= ABC D +ABCD +ABCD + ABCD + ABCD + ABCD + ABCD Implement the above function by using a 8 to 1 multiplexer (SN 74151) then a 16 to 1 multiplexer (SN 74150). Question 2 ( 5 points) In a door factory, quality control is carried out according to 4 criteria: weight p, length L, width 1, height h (1 correct, o incorrect). This allows the doors to be classified into 3 categories: Quality A: weight p and at least 2 dimensions are correct. Quality B: the weight being correct and at least 2 dimensions are incorrect Quality C: the weight p is incorrect. 1 - Give the truth table corresponding to the parameters p, L. 1. h and A,BC 2. Write the simplified expressions of A, B and C in terms of p. L. I and h. 3- Draw the logic circuit using only three inputs NAND gates. Question 3 (7points) We want to design a synchronous counter with incomplete cycle. For this, we propose a modulo-11 counter using D flip-flops. 1 - How many flip-flops are required to make this counter? 2- Give the excitation table showing the present states, the next states, and the D flip- flop inputs
Lebanese University Faculty of Technology Department of Communications and Computer Networks Engineering الجامعة اللبنانية كلية التكنولوجيا قسمينة شبكات المعلوماتية والاتصالات الجامعة اللميعا ميمة كل الكمونوشا First Year Semester 1 2020/2021 Final Exam Digital Electronics 1 Second session Closed Book Duration: 1.5 hour September 27, 2021 Question / (3 points) Consider the following Boolean function, F, of four variables A.B.C and D: F= ABC D +ABCD +ABCD + ABCD + ABCD + ABCD + ABCD Implement the above function by using a 8 to 1 multiplexer (SN 74151) then a 16 to 1 multiplexer (SN 74150). Question 2 ( 5 points) In a door factory, quality control is carried out according to 4 criteria: weight p, length L, width 1, height h (1 correct, o incorrect). This allows the doors to be classified into 3 categories: Quality A: weight p and at least 2 dimensions are correct. Quality B: the weight being correct and at least 2 dimensions are incorrect Quality C: the weight p is incorrect. 1 - Give the truth table corresponding to the parameters p, L. 1. h and A,BC 2. Write the simplified expressions of A, B and C in terms of p. L. I and h. 3- Draw the logic circuit using only three inputs NAND gates. Question 3 (7points) We want to design a synchronous counter with incomplete cycle. For this, we propose a modulo-11 counter using D flip-flops. 1 - How many flip-flops are required to make this counter? 2- Give the excitation table showing the present states, the next states, and the D flip- flop inputs
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