PROBLEM 3:

A local school is planning to organize a Science Quiz for its students. After the preliminary selection rounds, 5 teams will make it into the final level. The final round is an on-stage event where all the teams will be provided with buzzers. Upon being provided with a question, the team to first press the buzzer will be allowed to answer the question. The organizers have decided to use a display showing the team number who pressed the buzzer for more visibility to the audience. For example, if team 2 pressed the buzzer, the display will show 2. You need to design the buzzer system for the quiz. You decided to use an encoder, a decoder and 7-segment LED display for this purpose. The functional diagram of the system is given below

I only need 1, 3, and 4.

7 segment LED Display Team 1 Buzzer u Team 2 Buzzer ENCODER DECODER Binary encoded data over bus Team 5 Buzzer Fig. 1: The functional block level diagram of the proposed digital system Activities to do- 1. Identify the following design parameters - a. Number of the bits/wires required in the data bus. b. Size of the encoder and decoder. 2. Read one of the 7 segment LED display data sheet, try to understand how to use it. 3. Design the encoder and decoder blocks with basic logic gates then incorporate the same into a complete digital system on Logisim. 4. Did you encounter any don't care condition? What did you substitute for such don't cares? How does your choice affect the result? 7 segment LED Display Team 1 Buzzer u Team 2 Buzzer ENCODER DECODER Binary encoded data over bus Team 5 Buzzer Fig. 1: The functional block level diagram of the proposed digital system Activities to do- 1. Identify the following design parameters - a. Number of the bits/wires required in the data bus. b. Size of the encoder and decoder. 2. Read one of the 7 segment LED display data sheet, try to understand how to use it. 3. Design the encoder and decoder blocks with basic logic gates then incorporate the same into a complete digital system on Logisim. 4. Did you encounter any don't care condition? What did you substitute for such don't cares? How does your choice affect the result