Part 1- Construct a circuit which demonstrates the truth table of the 74LS138 as depicted below. Connect the switches to the input of the 74LS138 using the pullup resistor configuration you learned in Lab #1. Notify the Lab Instructor when your circuit is complete and demonstrate the circuit for full credit. Circuit # 1-741 38 44 513 1. Briefly explain how the circuit works/what function does it perform in terms of its input and outputs? 2. What are the control signals on the 74LS164? 3. What are the control signals on the 74LS373? 4. Include a picture of the circuit you built while its input is Ob010. 5. Draw a circuit diagram in which a 74LS138 is connected to a 6-bit address bus (Ao-As). The 74LS138 is used to select the Chip Select signals among 8 rangefinders that are mounted on a robot (CSo-CS). The range finders are mapped as external data memory at addresses 0x08 through 0x10. Any time the range finder's address is placed on the 6-bit address bus, the corresponding Chip Select signal should go low. Circuit #1-74138 D3 03 04 04 DS 05 418373 t 14164 Part 1- Construct a circuit which demonstrates the truth table of the 74LS138 as depicted below. Connect the switches to the input of the 74LS138 using the pullup resistor configuration you learned in Lab #1. Notify the Lab Instructor when your circuit is complete and demonstrate the circuit for full credit. Circuit # 1-741 38 44 513 1. Briefly explain how the circuit works/what function does it perform in terms of its input and outputs? 2. What are the control signals on the 74LS164? 3. What are the control signals on the 74LS373? 4. Include a picture of the circuit you built while its input is Ob010. 5. Draw a circuit diagram in which a 74LS138 is connected to a 6-bit address bus (Ao-As). The 74LS138 is used to select the Chip Select signals among 8 rangefinders that are mounted on a robot (CSo-CS). The range finders are mapped as external data memory at addresses 0x08 through 0x10. Any time the range finder's address is placed on the 6-bit address bus, the corresponding Chip Select signal should go low. Circuit #1-74138 D3 03 04 04 DS 05 418373 t 14164