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Electrical Engineering 145M - Spring 1995 - Derenzo - Final

# Electrical Engineering 145M - Spring 1995 - Derenzo - Final...

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NAME (please print) STUDENT (SID) NUMBER UNIVERSITY OF CALIFORNIA College of Engineering Electrical Engineering and Computer Sciences Berkeley EECS 145M: Microcomputer Interfacing Lab LAB REPORTS: 1 ____________ (100 max) 2 _____________ (100 max) 3 ____________ (100 max) 8 ____________ (100 max) 9 _____________ (100 max) 10 ____________ (100 max) 21 ____________ (100 max) 22 ____________ (100 max) 23 ____________ (100 max) 24 ____________ (100 max) 26 ____________ (200 max) TOTAL OF 5 LAB GRADES LAB PARTICIPATION MID-TERM #1 MID-TERM #2 FINAL EXAM TOTAL COURSE GRADE _______________ (500 max) _______________ (100 max) _______________ (100 max) _______________ (100 max) _______________ (200 max) _______________ (1000 max) COURSE LETTER GRADE Spring 1995 FINAL EXAM (May 19) Answer the questions on the following pages completely, but as concisely as possible. The exam is to be taken closed book . Use the reverse side of the exam sheets if you need more space. Calculators are OK but not needed. In answering the problems, you are not limited by the particular equipment you used in the laboratory exercises. Many formulae from the course have been provided for you on the last page. Partial credit can only be given if you show your work. FINAL EXAM GRADE : 1 __________ (30 max) 2 __________ (15 max) 3 _________ (15 max) 4 __________ (40 max) 5 __________ (40 max) 6 _________ (30 max) 7 __________ (30 max) TOTAL __________ (200 max) Spring 1995 EECS 145M Final Exam page 1 S. Derenzo/J. Henue

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Initials Problem 1 (total 30 points): A microcomputer has a parallel I/O port and 8 external digital devices are connected to the parallel output port to form a parallel output bus. The I/O port has 16 bits of input, 16 bits of output, and all external devices have 8 bits of input. b. (15 points) Sketch a block diagram showing and labeling all essential components and interconnections. (You only need to sketch two of the external devices- use dots to represent the other 6.) b. (15 points) Describe all the steps necessary for the microcomputer to write data to one specific external device and not to the others, using full handshaking. Spring 1995 EECS 145M Final Exam page 2 S. Derenzo/J. Henue
Initials Problem 2 (total 15 points): Describe the operation of the successive approximation analog to digital converter Problem 3 (total 15 points): List the steps involved in using the microcomputer to (1) sample a periodic signal to which a comparable amount of random white noise has been added, and (2) determine the period Spring 1995 EECS 145M Final Exam page 3 S. Derenzo/J. Henue

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Initials Problem 4 (40 points) You have been asked to design a peak-reading A/D converter system as part of a larger digital communication system. To overcome bandwidth limitations, discrete pulse heights are used to code digital information. Your system must (1) hold the maximum input level, (2) determine when
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