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test2-fall2006 - c Convert(9C 16 to decimal representation...

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1 of 2 Boise State University Department of Electrical and Computer Engineering EE 230 Digital Systems Test 2, October 31, 2006 Name: ______________________________ Row #: _______ Instructions : Show all steps and logic circuits for full or partial credits. It is very important that you write clearly, so that your test can be graded appropriately and fairly. This is a closed book and closed notes test. 1. Implement f ( x 1 , x 2 , x 3 , x 4 ) = m (0,4,8,13,14,15) , where x 1 is MSB and x 4 is LSB, using a. One 4-input multiplexer and other necessary gates, and b. 3-input LUTs only. 2. Convert the following numbers a. Convert (123.3654) 10 to binary representation, b. Convert -93 to (8-bit) sign and magnitude, 1’s complement, and 2’s complement representations,
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Unformatted text preview: c. Convert (9C) 16 to decimal representation, and d. Convert (75) 8 to decimal representation. 3. What is a ripple-carry adder? What is a carry-lookahead adder? Which adder has better performance? Which adder requires more gates to implement? Does performance directly related to logic resources required? 4. Design a logic circuit to convert 4-bit binary number (range 0 to F) to BCD (range 0 to 9) representation. Show how the BCD representation can be displayed to two seven-segment LEDs. 5. Complete the following timing diagram (see page 2) of the given logic circuit. Inst1 Inst3 Inst2 2 of 2 Clock Reset Data Inst1 Inst2 Inst3 fa...
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  • Fall '08
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  • Binary numeral system, Decimal, Binary-coded decimal, Department of Electrical and Computer Engineering, Boise State University

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