Counter Design 3

# Counter Design 3 - Now that we have a counter, lets do...

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Now that we have a counter, let’s do something with it. Problem 3 Design the set of equations that will drive a seven-segment LED display to show the numeric equivalent of the value of the counter’s present state. Consider state A to be the bit of higher significance. a g dot a g dot a g dot a g dot From left to right, the seven-segment LED display should take on the appearance of the above schematic representations for 00, 01, 10 and 11, respectively. As with the counter, the display should show the number zero in the state following the one where it shows the number three. First, let’s talk about the seven-segment display. In Logic Works, you’ll be using the part having the name 7- seg Disp Inv . The color of the display’s LEDs doesn’t matter. Do not use any of the parts having the name 7- seg Disp . They do not work the same way that the seven-segment LED display in your chipset works. The seven-segment display actually has eight inputs. These eight inputs control the seven segments of the display, and the decimal point. Seven of the inputs are labeled with letters of the alphabet from a to g , while the eighth is labeled dot . Segment a is at the top of the display, and the segments continue clockwise in alphabetical order. Segment g is in the middle. The

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## This note was uploaded on 01/17/2011 for the course ECE 3504 at Virginia Tech.

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Counter Design 3 - Now that we have a counter, lets do...

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