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Voice Synthesizer
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This circuit is mounted on a wall outside the Electronics Lab (AT214). A magnetic switch on the door triggers the voice synthesizer, which states "Welcome to the Electronics Lab" in Rick Riegal's voice. Rick co-designed and built the project, which uses an 8085 CPU, 27256 EPROM, and 12-bit D/A converter. |
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Reaction Timer
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The Reaction Timer is mounted on the wall opposite to the Electronics Lab. A three digit numeric display, along with a 100-element LED bargraph, displays the amount of time (0 to 999 milliseconds) it takes the user to press the STOP button. An 8085 CPU is used to control several 7490 decade counters. Co-designed and built by Tim Gilmore. |
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Starburst Display
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The Starburst display is a set of 96 LEDs arranged like the spokes of a wheel, with 8 LEDs per spoke (12 spokes). Groups of LEDs directly across from each other are wired in parallel, so only 6 sets of 8 LEDs must be controlled. An 8080 CPU runs a light show program, which in turn sequences the LEDs in various patterns, such as circle in/out, spinning bars, flashing, etc. Students taking EET267 Digital Electronics use this project to demonstrate their own light shows. The Starburst display is mounted on the side wall of the Microprocessor Lab (AT217). Co-designed and built by Kyle Kibbler. |