cs-ee 481 1founder’s day university of portland school of engineering 24 hour clock authors evan...
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CS-EE 481
1Founder’s DayUniversity of Portland School of Engineering
24 Hour Clock
AuthorsEvan McNichols
Brian Myles
Joe Oletti
AdvisorProf. Nuxoll, Dr. Crenshaw,
Dr. Osterberg
Industry RepresentativeMr. Walt Harrison
Intel & etc.
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Introduction
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Agenda
• Background Brian
• Methods Evan
• Results The Team
• Demonstration Joe
• Possible Enhancements Brian
• Conclusions Brian
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Background• Key Technology: MOSIS• B^2 Logic used to program logic• Hard deadline of November 26th• 5 feature display
– Time of day– Day of week– Class In/Out– Greeting– Ten-minute countdown
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Methods• Leveraged what we knew• Scheduled extra work-time• Practiced parallel development• Saved time with custom Printed Circuit Board
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Results
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User Input
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User Input
ENABLE SET_1 SET_0 RESULT
OFF X X Normal Function
ON OFF OFF Display Freezes, Seconds Reset to 00
ON OFF ON Only Minutes Change
ON ON OFF Only Hours Change
ON ON ON Only Days Change
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User Input
ENABLE SET_1 SET_0 RESULT
OFF X X Normal Function
ON OFF OFF Display Freezes, Seconds Reset to 00
ON OFF ON Only Minutes Change
ON ON OFF Only Hours Change
ON ON ON Only Days Change
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User Input
ENABLE SET_1 SET_0 RESULT
OFF X X Normal Function
ON OFF OFF Display Freezes, Seconds Reset to 00
ON OFF ON Only Minutes Change
ON ON OFF Only Hours Change
ON ON ON Only Days Change
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User Input
ENABLE SET_1 SET_0 RESULT
OFF X X Normal Function
ON OFF OFF Display Freezes, Seconds Reset to 00
ON OFF ON Only Minutes Change
ON ON OFF Only Hours Change
ON ON ON Only Days Change
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User Input
ENABLE SET_1 SET_0 RESULT
OFF X X Normal Function
ON OFF OFF Display Freezes, Seconds Reset to 00
ON OFF ON Only Minutes Change
ON ON OFF Only Hours Change
ON ON ON Only Days Change
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Logic Block Diagram
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LOGIC GATE DIAGRAM
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Display/PCB
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Display/PCB• MOSIS socket• 1Hz Fox Chip• Bulb display• Countdown• Seconds• Hours&Minutes• Switch circuit• Headers
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Display/PCB• MOSIS socket• 1Hz Fox Chip• Bulb display• Countdown• Seconds• Hours&Minutes• Switch circuit• Headers
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Display/PCB• MOSIS socket• 1Hz Fox Chip• Bulb display• Countdown• Seconds• Hours&Minutes• Switch circuit• Headers
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Display/PCB• MOSIS socket• 1Hz Fox Chip• Bulb display• Countdown• Seconds• Hours&Minutes• Switch circuit• Headers
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Display/PCB• MOSIS socket• 1Hz Fox Chip• Bulb display• Countdown• Seconds• Hours&Minutes• Switch circuit• Headers
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Display/PCB• MOSIS socket• 1Hz Fox Chip• Bulb display• Countdown• Seconds• Hours&Minutes• Switch circuit• Headers
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Display/PCB• MOSIS socket• 1Hz Fox Chip• Bulb display• Countdown• Seconds• Hours&Minutes• Switch circuit• Headers
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Display/PCB• MOSIS Socket• 1Hz clock• Bulb display• Countdown• Seconds• Hours&Minutes• Switch circuit• Headers
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Display/PCB
• Headers• Bulb LED display• 7-segment LEDs
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Display/PCB
• Headers• Bulb LED display• 7segment LEDs
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Display/PCB
• Headers• Bulb LED display• 7segment LEDs
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Display/PCB
• Headers• Bulb LED display• 7segment LEDs
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Display/PCB
• Headers• Bulb LED display• 7segment LEDs
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Demonstration
ENABLE SET_1 SET_0 RESULT
OFF X X Normal Function
ON OFF OFF Display Freezes, Seconds Reset to 0
ON OFF ON Only Minutes Change
ON ON OFF Only Hours Change
ON ON ON Only Days Change
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Possible Enhancements
• 10-minute countdown
• Display:• Peripheral Interface Controller
(PIC)• LED driver
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Conclusions
Desired Function Actual Function
Time of day (24 hour format)
Day of week (Monday – Sunday)
10-minute countdown timer 9-minute countdown timer with warning
Greeting (Good morning, good afternoon, good evening)
Class In/Out
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Conclusions• Created IC-based project• Used MOSIS for IC• Demonstrated effective design method• Met requirements and functionality• Learned about the design process
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Thank You
Prof Nuxoll Dr Crenshaw Dr Osterberg Craig Henry
Walt Harrison
Chet Gardner Sunstone Electronics
MOSIS
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Questions?
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