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You wish to create a circuit that functions similarly to an SR latch but accepts the input S1R1=11 and executes the function "invert." As seen in the circuit below, this will need feedback. A) Create the Truth Table for this circuit B) Design the circuit that satisfies the requirement

You wish to create a circuit that functions similarly to an SR latch but accepts the input S1R1=11 and executes the function "invert." As seen in the circuit below, this will need feedback. A) Create the Truth Table for this circuit B) Design the circuit that satisfies the requirement

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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You wish to create a circuit that functions similarly to an SR latch but accepts the input S1R1=11 and executes the function "invert." As seen in the circuit below, this will need feedback.

A) Create the Truth Table for this circuit

B) Design the circuit that satisfies the requirement

 

This image depicts a block diagram of an SR latch circuit using logic gates. The SR latch is a basic bistable circuit, meaning it has two stable states and can store one bit of information. ### Components of the Diagram: 1. **SR Latch Block:** - The block is labeled with an "L" and has four terminals: S, R, Q, and \( Q' \). - **S (Set) Input:** This input is responsible for setting the latch. When activated, it typically sets the Q output to 1. - **R (Reset) Input:** This input resets the latch. When activated, it typically sets the Q output to 0. - **Q Output:** Represents the current state of the latch. - **\( Q' \) Output:** Represents the complement of the current state of the latch. 2. **External Connections:** - External inputs \( S_1 \) and \( R_1 \) connect to the S and R inputs, respectively, of the SR latch. - There is a feedback loop from the Q output back into the system, which is a key characteristic of latch circuits for maintaining their state. ### Functionality: The SR latch is a simple memory device commonly used in digital circuits. It functions based on the inputs provided: - When \( S = 1 \) and \( R = 0 \), the Q output is set to 1. - When \( S = 0 \) and \( R = 1 \), the Q output is reset to 0. - When both \( S \) and \( R \) are 0, the latch maintains its current state. - Setting both \( S \) and \( R \) to 1 is typically avoided, as it leads to an undefined state. This diagram illustrates how digital storage elements retain information, forming the building blocks of more complex memory structures in computing systems.
Transcribed Image Text:This image depicts a block diagram of an SR latch circuit using logic gates. The SR latch is a basic bistable circuit, meaning it has two stable states and can store one bit of information. ### Components of the Diagram: 1. **SR Latch Block:** - The block is labeled with an "L" and has four terminals: S, R, Q, and \( Q' \). - **S (Set) Input:** This input is responsible for setting the latch. When activated, it typically sets the Q output to 1. - **R (Reset) Input:** This input resets the latch. When activated, it typically sets the Q output to 0. - **Q Output:** Represents the current state of the latch. - **\( Q' \) Output:** Represents the complement of the current state of the latch. 2. **External Connections:** - External inputs \( S_1 \) and \( R_1 \) connect to the S and R inputs, respectively, of the SR latch. - There is a feedback loop from the Q output back into the system, which is a key characteristic of latch circuits for maintaining their state. ### Functionality: The SR latch is a simple memory device commonly used in digital circuits. It functions based on the inputs provided: - When \( S = 1 \) and \( R = 0 \), the Q output is set to 1. - When \( S = 0 \) and \( R = 1 \), the Q output is reset to 0. - When both \( S \) and \( R \) are 0, the latch maintains its current state. - Setting both \( S \) and \( R \) to 1 is typically avoided, as it leads to an undefined state. This diagram illustrates how digital storage elements retain information, forming the building blocks of more complex memory structures in computing systems.
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