Subelement E: Digital Logic— Topic 35: Logic Levels
Question 3-35E5
Element 3 (GROL)Given the input levels shown in Figure 3E14 and assuming positive logic devices, what would the output be?
Explanation
In positive logic, a high voltage level represents a logic '1' (true), and a low voltage level represents a logic '0' (false). To determine the outputs A, B, and C, one must evaluate the state of each logic gate shown in Figure 3E14 based on its specific input levels and its truth table.
By tracing the signals through the depicted circuit and applying the rules of each gate (such as AND, OR, NOT, NAND, NOR, etc.), the input levels shown in the figure propagate through the circuit. When these inputs are applied, the resulting outputs at points A, B, and C are determined. For the circuit shown in Figure 3E14, the specific combination of gates and input levels leads to output A being low, output B being high, and output C being high. The other options are incorrect as they would not result from the specific circuit configuration and input levels given in Figure 3E14.
Related Questions
3-35E3 For the logic input levels given in Figure 3E13, what are the logic levels of test points A, B and C in this circuit? (Assume positive logic.)3-35E4 In a positive-logic circuit, what level is used to represent a logic 1?3-35E6 What is a truth table?3-36E1 A flip-flop circuit is a binary logic element with how many stable states?3-36E2 What is a flip-flop circuit? A binary sequential logic element with ___stable states.