Switch in Car 0 Switch in Car 1 Encoder Binary encoded data over bus Decoder Activities to do- 1. Identify the following design parameters - 7 segment LED display at driver's dash board Switch in Car 6 Fig. 1: The functional block level diagram of the proposed digital system a. Number of switches that will be required. b. Number of the bits/wires required in the data bus. c. Size of the encoder and decoder. m D 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. Submit your design with a brief text explanation/description on how it will actually work. You must explain the working of your system to get full credit.

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New York's Metropolitan Transport Authority (MTA) operates the subway transport facility in New York. Each subway train consists of 6 subway cars all chained together and pulled by a motored subway car at the front end. (6 + 1 motor car in total) To improve the security of passengers, MTA decided to install a switch inside every subway car. A passenger can press this emergency switch which is there in his/her car to signal the driver that an emergency situation has happened in his/her car. In response the driver will then dispatch security personnel to that particular car, when the car stops at the next station. You are recruited by MTA to develop a digital system to achieve this. MTA's chief wants that when the emergency button is pressed in a particular car, that car's number should be displayed in the driver's dash board. If no button is pressed, the display remains off. You decided to use a 7 segment LED display, an encoder and a decoder built by TTL chips, to design and implement this system. The functional diagram of the system is given below.
Switch
in Car 0
Switch
in Car 1
Encoder Binary encoded
data over bus
Decoder
Activities to do-
1. Identify the following design parameters -
7 segment LED
display at driver's
dash board
Switch
in Car 6
Fig. 1: The functional block level diagram of the proposed digital system
a. Number of switches that will be required.
b. Number of the bits/wires required in the data bus.
c. Size of the encoder and decoder.
m
D
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. Submit your design with a brief text explanation/description on how it will actually
work. You must explain the working of your system to get full credit.
Transcribed Image Text:Switch in Car 0 Switch in Car 1 Encoder Binary encoded data over bus Decoder Activities to do- 1. Identify the following design parameters - 7 segment LED display at driver's dash board Switch in Car 6 Fig. 1: The functional block level diagram of the proposed digital system a. Number of switches that will be required. b. Number of the bits/wires required in the data bus. c. Size of the encoder and decoder. m D 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. Submit your design with a brief text explanation/description on how it will actually work. You must explain the working of your system to get full credit.
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