(E)Element 3-35 Logic Levels

Question 1

In a negative logic circuit, what level is used to represent a logic 0?

Answer 1

high level

Question 2

For the logic input levels shown in figure 3E12, what are the logic levels of test ponts A, B, and C, in this circuit? Assume positive logic

Answer 2

A is low, b is high, c is high

Question 3

For the logic input levels shown in Figure 3E13, what are the logic levels of test points A, B, C, in this circuit? assume positive

Answer 3

A is high B is high C is high

Question 4

In a positive logic circuit, what level is used to represent a logic 1?

Answer 4

high level

Question 5

Given the input levels shown in Figure 3E14 and assuming positive logic devices, what would the output be?

Answer 5

a is low, b is high, c is high

Question 6

What is the truth table?

Answer 6

a list of combinations and their corresponding outputs that characterizes a digital devices function