Write the following decimal numbers as 8-bit signed binary numbers, using 2's complement form. -93 0 -1
Write the following decimal numbers as 8-bit signed binary numbers, using 2's complement form. -93 0 -1
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:**Topic: Converting Decimal Numbers to 8-bit Signed Binary Using Two's Complement**
**Exercise:**
Convert the following decimal numbers into 8-bit signed binary numbers using the two's complement form:
1. -93
2. 0
3. -1
---
**Explanation:**
The transformation process involves the following steps for each number:
1. **Positive Numbers:**
- Convert the decimal number to binary.
- If the number is less than 128, ensure it is 8 bits by adding leading zeros.
2. **Negative Numbers:**
- Convert the absolute value to binary.
- Ensure it is 8 bits by adding leading zeros.
- Invert the digits (0s become 1s and 1s become 0s).
- Add 1 to the least significant bit (LSB).
**Example of Two's Complement Conversion:**
- **For -93:**
- Convert 93 to binary: `01011101`
- Invert digits: `10100010`
- Add 1: `10100011`
- **For 0:**
- Binary form: `00000000`
- **For -1:**
- Convert 1 to binary: `00000001`
- Invert digits: `11111110`
- Add 1: `11111111`
These conversions help represent negative and positive numbers efficiently in computing systems using a fixed number of bits.
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