Hi i need help. My teacher gave us a project to do and didnt tell us how. WE have to make a now serving display that when you toggle the switch it counts up 1. We have to use 2 seven seg displays a 74ls47n binary to decimal drive. I know i need to cascade the 74ls193 to make a eight bit counter but i dont know how. i think after i get that set u i can figure out the rest. Any help would be greatly appreciated. And im using multisim 11. this is what i have so far http://i.imgur.com/U47Bu.png
this is the full project
Introduction
In this design project, you will have the opportunity to draw together all of the concepts and skills that you have developed pertaining to the topic of synchronous counter design. You will design, simulate, and build a Now Serving Display. This is the type of display that you would commonly see at a deli counter.
Equipment
· Paper and pencil
· Circuit Design Software (CDS)
· Digital Logic Board (DLB)
· Integrated Circuits (optional)
o 74LS193
o 74LS48
o Common Cathode Seven-Segment Displays
o Additional logic gates as needed
· Jumper wires (optional)
Procedure
Design
Design a digital circuit that displays the count from 00 to 99. This design has two control inputs and two output displays. The two inputs are Next and Reset. The Next signal comes from a push-button switch that, when pressed, advances the display by one. The Reset signal, which is also a push-button switch, will reset the display to a count of 00. If the display reaches 99 and the Next button is pressed, the count will roll over to 00.
Design Specification:
· The two output displays are common cathode seven-segment displays.
· Current limiting resistors (150 W - 270 W) must be used.
· Each display will use a 74LS48 BCD-To-Seven-Segment display driver.
· The counting is controlled by two cascaded 74LS193 Synchronous 4-Bit Binary Counters.
· Any additional logic may be used as needed to support the counter designs.
this is the full project
Introduction
In this design project, you will have the opportunity to draw together all of the concepts and skills that you have developed pertaining to the topic of synchronous counter design. You will design, simulate, and build a Now Serving Display. This is the type of display that you would commonly see at a deli counter.
Equipment
· Paper and pencil
· Circuit Design Software (CDS)
· Digital Logic Board (DLB)
· Integrated Circuits (optional)
o 74LS193
o 74LS48
o Common Cathode Seven-Segment Displays
o Additional logic gates as needed
· Jumper wires (optional)
Procedure
Design
Design a digital circuit that displays the count from 00 to 99. This design has two control inputs and two output displays. The two inputs are Next and Reset. The Next signal comes from a push-button switch that, when pressed, advances the display by one. The Reset signal, which is also a push-button switch, will reset the display to a count of 00. If the display reaches 99 and the Next button is pressed, the count will roll over to 00.
Design Specification:
· The two output displays are common cathode seven-segment displays.
· Current limiting resistors (150 W - 270 W) must be used.
· Each display will use a 74LS48 BCD-To-Seven-Segment display driver.
· The counting is controlled by two cascaded 74LS193 Synchronous 4-Bit Binary Counters.
· Any additional logic may be used as needed to support the counter designs.
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