**Understanding Bitwise Operations for an 8-bit Operand**When working with an 8-bit operand, specific operations can be performed using an 8-bit mask and a logical operator. The bit positions in the operand are numbered from 7 to 0, left to right. Below are examples of some operations and the corresponding logical operators and masks required.**a. Setting all bits to 1:**To set every bit in an 8-bit operand to 1, a logical OR or SET operation is typically used with a mask of 1s.- **Logical Operator:** OR- **Logical Mask:** 1111 1111 **b. Clearing bits 5, 4, 3, and 2 to 0:**To clear bits 5, 4, 3, and 2, a logical AND operation is used with a mask that has 0s at positions 5, 4, 3, and 2.- **Logical Operator:** AND- **Logical Mask:** 1100 0011 **c. Complementing bits 2, 1, and 0:**To flip the bits 2, 1, and 0 (complement operation), a logical XOR operation is used with a mask that has 1s at positions 2, 1, and 0.- **Logical Operator:** XOR- **Logical Mask:** 0000 0111 **d. Setting bits 7, 6, and 5 to 1:**To set bits 7, 6, and 5 to 1 without affecting other bits, a logical OR operation is used with a mask that has 1s at positions 7, 6, and 5.- **Logical Operator:** OR- **Logical Mask:** 1110 0000 These bitwise operations allow for precise control over individual bits within an 8-bit operand, enabling various data manipulation tasks in computing and digital communication.

A logical operator is a symbol or keyword used to perform operations on one or more logical values…

6. For an 8-bit operand, specify the 8-bit mask and the logical operator to perform the following operations. Bit positions are numbered 7-0, left to right. a. Logical Operator: Logical Mask: b. Set all bits to 1. Logical Operator: C. Clear bits 5, 4, 3, and 2 to 0. All other bits remain unchanged. Logical Mask: d. Complement bits 2, 1, and O. All other bits remain unchanged. Logical Operator: Logical Mask: Set bits 7, 6, and 5 to 1. All other bits remain unchanged. Logical Operator: Logical Mask:

6. For an 8-bit operand, specify the 8-bit mask and the logical operator to perform the following operations. Bit positions are numbered 7-0, left to right. a. Logical Operator: Logical Mask: b. Set all bits to 1. Logical Operator: C. Clear bits 5, 4, 3, and 2 to 0. All other bits remain unchanged. Logical Mask: d. Complement bits 2, 1, and O. All other bits remain unchanged. Logical Operator: Logical Mask: Set bits 7, 6, and 5 to 1. All other bits remain unchanged. Logical Operator: Logical Mask:

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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Question

**Understanding Bitwise Operations for an 8-bit Operand**

When working with an 8-bit operand, specific operations can be performed using an 8-bit mask and a logical operator. The bit positions in the operand are numbered from 7 to 0, left to right. Below are examples of some operations and the corresponding logical operators and masks required.

**a. Setting all bits to 1:**
To set every bit in an 8-bit operand to 1, a logical OR or SET operation is typically used with a mask of 1s.

- **Logical Operator:** OR
- **Logical Mask:** 1111 1111

**b. Clearing bits 5, 4, 3, and 2 to 0:**
To clear bits 5, 4, 3, and 2, a logical AND operation is used with a mask that has 0s at positions 5, 4, 3, and 2.

- **Logical Operator:** AND
- **Logical Mask:** 1100 0011

**c. Complementing bits 2, 1, and 0:**
To flip the bits 2, 1, and 0 (complement operation), a logical XOR operation is used with a mask that has 1s at positions 2, 1, and 0.

- **Logical Operator:** XOR
- **Logical Mask:** 0000 0111

**d. Setting bits 7, 6, and 5 to 1:**
To set bits 7, 6, and 5 to 1 without affecting other bits, a logical OR operation is used with a mask that has 1s at positions 7, 6, and 5.

- **Logical Operator:** OR
- **Logical Mask:** 1110 0000

These bitwise operations allow for precise control over individual bits within an 8-bit operand, enabling various data manipulation tasks in computing and digital communication.

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