EEE 120 Quiz 1 Electrical Fundamentals and Logic Gates

Most digital circuits represent binary values using ________.       _______

0 V and +5 V

LOW (or binary 0) in a digital system typically corresponds to ________.

0 V

The rising edge of a digital clock occurs when

the signal changes from LOW to HIGH

What is the frequency of a clock waveform whose period is 20 microseconds

50 kHz

The Boolean equation for an OR gate is ________.

A + B = X

Waveforms A and B represent the inputs to an AND gate. During which time interval will the output from the gate (X) be HIGH?

time interval 2

If both inputs of an AND gate are normally HIGH but one of them momentarily dips LOW, the output will

momentarily dip LOW

The Boolean equation for a NAND function is

X = (AB)’

Which logic function can be implemented by connecting an inverter to the output of an OR gate?

NOR

Which logic function can be implemented by connecting an inverter to the output of a NAND gate?

AND

Can you construct an XOR gate using only AND/OR/NOT gate(s)?

Yes

Which gate can be used to generate a true output if an odd number of inputs is true?

XOR

An NAND gate with inverters connected to each input behaves like OR gate

True

What is the period of a clock waveform whose frequency is 4 mHz?

250 s

Waveforms A and B represent the inputs to an OR gate. During which time interval(s) will the output from the gate (X) be HIGH?

time intervals 3 and 5

Which logic function is represented by the equation ABCD = X?

AND

If one input of an AND gate is HGH while the other is a clock signal, the output is

a clock signal

If one input of an OR gate is HIGH while the other is a clock signal, the output is

HIGH

Which logic gate is described by the following truth table?

XNOR