What are the values of R,R, and R, ? 18 0 A B A B Ri 36 0 272 R: (a) 120,6Ω, and 8Ω (b) 6012N, and 80 (c) 608 2 and 120 (d) 80,12 2 and 60 (e) Nonel

design a two-way traffic light system with prototype using 4-bit down counter circuit. use 7-segment as an output to represent the timer.i need help.. pls make a circuit diagram for this. i will do this on the breadboardand also explain how u did it. thank youthe photo attached is how i will do it

please include full solutions and provide explanation. will give thumbs up for complete answer

1-What phrase is used when a substitution is permitted for a specific item? 2-The specifications state that all work shall be done... 3-What phrase is used when a substitution is permitted for a specific item? 4-What is the purpose of an electrical symbol? 5. Where are notations found?

Explain and draw a 7490 chip in a circuit of your own design. I want the actual chips drawn with the symbols inside, then a wiring diagram showing the interconnections. Power source and A, B, C, and/or D inputs may be added in the form of either buttons or switches.

please show all work and steps,kindly thank you.