Write the following decimal numbers as 8-bit signed binary numbers, using 2's complement form. -93 0 -1

Database System Concepts
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ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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**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.
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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