Complete the timing diagram below for the active-HIGH latch shown. The latch is initially set. S R C C S R Q Q

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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**Latch Timing Diagram Exercise**

**Objective:**
Complete the timing diagram below for the active-HIGH latch shown. The latch is initially set.

**Diagram Explanation:**

This illustration features two main components:

1. **Timing Diagram (Left Side):**
   - The diagram consists of four horizontal lines labeled `S`, `R`, `Q`, and `Q̅`.
   - Each line is divided into segments representing time intervals, marked by vertical grid lines.
   - Signal transitions are shown as changes in level (either high or low) within each line.

2. **Latch Symbol (Right Side):**
   - A simple block diagram representing a latch with inputs `S` (Set) and `R` (Reset).
   - Outputs are labeled `Q` and `Q̅` (the inverse of `Q`).

**Instructions:**

1. Analyze the transitions for inputs `S` and `R`.
2. Update the `Q` and `Q̅` lines accordingly based on the active-HIGH behavior of the latch:
   - If `S` is high and `R` is low, `Q` should be set.
   - If `R` is high and `S` is low, `Q` should be reset.
   - If both `S` and `R` are low, maintain the previous state.
   - If both `S` and `R` are high, consider it an invalid condition for a typical SR latch.

The initial state is set, so `Q` starts high and `Q̅` starts low. Adjust the diagram based on these rules to complete the timing analysis.
Transcribed Image Text:**Latch Timing Diagram Exercise** **Objective:** Complete the timing diagram below for the active-HIGH latch shown. The latch is initially set. **Diagram Explanation:** This illustration features two main components: 1. **Timing Diagram (Left Side):** - The diagram consists of four horizontal lines labeled `S`, `R`, `Q`, and `Q̅`. - Each line is divided into segments representing time intervals, marked by vertical grid lines. - Signal transitions are shown as changes in level (either high or low) within each line. 2. **Latch Symbol (Right Side):** - A simple block diagram representing a latch with inputs `S` (Set) and `R` (Reset). - Outputs are labeled `Q` and `Q̅` (the inverse of `Q`). **Instructions:** 1. Analyze the transitions for inputs `S` and `R`. 2. Update the `Q` and `Q̅` lines accordingly based on the active-HIGH behavior of the latch: - If `S` is high and `R` is low, `Q` should be set. - If `R` is high and `S` is low, `Q` should be reset. - If both `S` and `R` are low, maintain the previous state. - If both `S` and `R` are high, consider it an invalid condition for a typical SR latch. The initial state is set, so `Q` starts high and `Q̅` starts low. Adjust the diagram based on these rules to complete the timing analysis.
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