Complete the timing diagram below for the active-HIGH latch shown. The latch is initially set. S R C C S R Q Q
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
Problem 1PE
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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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