Question

EEET-2251: Course & Projoct Guide 2018 EEET-2251: Cousc &Projoct Guide 2018 affic Light Controller A single switch must set your HC74 based state machine to the initial state (the U state This lab will get you to design a simple controller for a pedestrian crossing based on synchronous digital logic. You will master several design and construction methods- The clock signal from your 555 clock generator circuit will be used as the clock source for the flip flop devices. The +5v power can also come from this board For troubleshooting purposes, you can change your clock generator from free run mode to single step mode by changing the jumper JP2 from position F to S. This will allow you to use the moentary switch on the clock generator board to single step through your traffic light controller The state diagram for the traffic light controller is shown below. Note the numbering of the states depends on the last digit of your student number For testing you must have flip-flops inputs and outputs drive a small LED, as well as LEDs for each traffic light One switch must be able to sct your flip-flops to the state U Convert a problem statement to a state diagram. Convert a state diagram to a truth table . Convert a truth table to minimized boolean logic using K-Maps. Construct and test the circuit using HC logic on a breadboard. Last digit of State numbering Student # | TA.TW.TS.U U: Unuscd state NSR, Wait PRELIMINARY LAB SESSION: in a previous lab you tested a real gates on your breadboard before using them in your design. In the same manner this lab will test a single D flip-flop using an HC74 flip-flop IC as this will be the basis of your circuit for this lab. You should use your clock board as a source of power and clock signal. Use switches to drive your circuit and LEDs to show outputs. Your tutor will be looking for the following to be neatly in your log book 10, 0, 11, 00 00. 01, 10. 11 00, 10, 11, 01 00. 10, 01. 11 00, 11, 10, 01 11. 01, 00, 10 1,01, 10, 00 11. 10, 00. 01 1, 10, 01, 00 10. 00, 11. 01 TA:Traflic Active NSG. Wait switch pushcd A proper schenatic diagram ofyour test circuit. Be able to show the effect of all inputs on the flip-flop output Be able to explain to the tutor why an input pin should not be left floating (What does this mean for your circuit.) There will be other questions. Note the tutor will ask you at least one question based on the HC74 data sheet so make sure you have a copy and understand it. TW: Traffic Warning NSY, Wait TS: Traffic Stopped NSR. Go While there are no marks for this lab it is a great stepping stone for full lab which will be marked next week. Ignore this preliminary lab at your peril. SELF EVALUATION SHEET: as per Lab 2 you will need to fill out the self reflection sheet. See Lab 2 for details. SWITCH PUSHED: if the second last digit of your student number is even then switch pushed is active high (push gives +5v). if the digit is odd then the switch is active low (push gives 0v) THE TRAFFIC LIGHT: after completing the Lab 3 preliminary start work on Lab 3 proper The traffic light has the following properties- LOG BOOKS: all preliminary work and design work must be neatly written up in the log book. Get your tutor to sign your book every weck and start work carly The traflic lights in the north-south (NS) direction are NSR (red LED), NSY (yellow LED) and NSG (green LED) The pedestrian crossing lights are Wait (red LED) and Go (green LED). NS must remain green unless changed by the pedestrian by pushing the crossing switch. The DIP switch will be used for the pedestrian crossing switch. If you present a fully working project but your log book has no design work signed off by the tutor then you will get zero marks. To get help from your tutor you must have a prope design work such as K-Maps. r schematic of your circuit and relevant Copyright Dr. Pj Radcliffe 2018 Page 1021l Copyright Dr. Pj Radcliffe 2018 Page 1022

Can someone please show me a circuit diagram so i can see how to construct this on a bread board i am id 6 yhanks in advance

Answer 1