Digital Electronics

The NOR Gate is OR Gate followed by ...............

• OR Gate

• NOT Gate

• AND Gate

• None of the above

The inputs of a NAND Gate are connected together. The resulting circuit is .............

• AND Gate

• OR Gate

• NOT Gate

• None of the above

The only function of NOT Gate is to ....................

• Stop signal

• Invert input signal

• Act as universal gate

• All of the above

To realise a stair case wiring (i.e, one lamp controlled by two switches), which of the following gate is useful?

• NOR Gate

• XOR Gate

• AND Gate

• NAND Gate

Convert binary number 1011 to gray code

• 1101

• 1110

• 1111

• 1100

Which of the following is the appropriate scenario for wearing safety glasses in anelectronics classroom?

• Safety glasses or goggles should be worn to prevent eye injuries from chemicals that splash. 

• Safety glasses or goggles should be worn when using tools that may cause objects to be thrown. 

• Safety glasses or goggles should be used when soldering components. 

• All of the above. 

You are getting ready to power another student's electrical circuit in this class, but you are not sure of the voltage necessary to use. Students in this class should always use:

• 5V because all of the components we use are always TTL.

• 3.3V because all of the components we use are always CMOS. 

• 9V because that is the battery lying next to the circuit. 

• Check with the other students who created it or the instructor. The design may require different voltage based on what it does and how it is designed. 

Chemicals can be used to etch circuit board. Which of the following should be done before using the chemicals in an electronic classroom?

• Read all instructions that come with the chemical. 

• Read the Safety Data Sheet to prepare for emergencies. 

• Wear goggles and a lab coat to protect from potential spills. 

• All of the above. 

Why should the students not rush? Why should students take their time when working in an electronics classroom?

• Taking your time allows you to double check your connections and reduce the need for troubleshooting later. 

• Taking your time allows you to create your circuits more neatly. This allows you to pick up where you left off last time more easily. 

• Taking your time allows you to double check all part numbers and values. A common error. 

• All of the above. 

Tags

NGSS.HS-PS3-3

When an input to a logic chip has no connection to positive or negative, the logic gate will freak out. That condition, not being connected is called:

• Pulling Down

• Drifting

• Floating

• Lifting