Samuel Emeka Okeke

Website Developer | Certified Microsoft Innovative Educator (MIE)| Certified Google Digital Marketing Expert| An Author | Lecturer

MacBook Keyboard Shortcuts: Enhance Productivity with Key Combinations

Keyboard shortcuts are a powerful tool for maximizing your productivity and efficiency when using your MacBook. Instead of relying solely on your mouse or trackpad, these shortcuts allow you to perform various tasks quickly and effortlessly by pressing specific key combinations. In this comprehensive guide, we’ll explore a range of essential keyboard shortcuts that can […]

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8 Tips and Tricks of Optimizing a MacBook Battery Life

One of the key concerns for MacBook users is maximizing battery life. Whether you’re a student, a professional, or an on-the-go enthusiast, a longer-lasting battery can significantly improve your MacBook experience. In this guide, we’ll explore step-by-step procedures to help you optimize your MacBook’s battery life, ensuring it runs longer between charges. Step 1: Adjust

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Computer Ethics

Security and Ethics: Security refers to the protection of computer systems, networks, and data from unauthorized access, attacks, and damage. It involves measures and practices that aim to ensure the confidentiality, integrity, and availability of digital assets. Ethical considerations come into play when making decisions about security practices. Ethical behaviour in the context of security

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Data Representation

Definition of Data Representation: Data representation is the way in which information or data is encoded and stored in a format that computers can understand and manipulate. Since computers work with binary systems (1s and 0s), data from the real world needs to be translated into these binary values for processing. Data representation encompasses various

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High-Level Languages: Meaning, Features & Examples

Definition of High-Level Language: A high-level programming language is a type of computer programming language designed to be human-readable and relatively easy to understand by programmers. High-level languages abstract away much of the complexity of computer hardware and provide more intuitive and user-friendly syntax for writing code. They allow programmers to express algorithms and logic

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Graphics: CorelDraw, Examples & Features

Computer Graphics refer to visuals generated using computers and encompass the creation, representation, and manipulation of image data through computational means. Examples of Graphics Software Packages Paint CorelDraw Adobe Photoshop Harvard Graphics Print Master Ventura Photoshop Pro Adobe PageMaker CorelDraw Environment and its Features Title Bar: The title bar displays the name of the active

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Database

A database is an application utilized to systematically store information. It comprises a structured collection of data or records. A database management system (DBMS) is a compilation of computer software that empowers users to establish, generate, and uphold a database. Functioning as a computer application, a DBMS interacts with users, other applications, and the database

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Cables & Connectors

Cables and connectors are essential components in various industries, particularly in technology, telecommunications, and electronics. They play a crucial role in transmitting signals, data, and power between different devices and systems. There are various types of cables and connectors designed for specific purposes, each with its own characteristics, compatibility, and use cases. Here’s an overview

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World Wide Web (WWW)

Definition of the World Wide Web: The World Wide Web (WWW or simply the Web) is a system of interconnected documents and resources that are accessed over the Internet using web browsers. It’s a part of the broader internet and allows users to navigate through a vast collection of web pages, multimedia content, and other

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Computer Network: LAN, MAN, WAN, PAN, HAN, CAN, VPN, WLAN

Computer networks are interconnected systems that allow computers and other devices to communicate, share resources, and exchange information. These networks come in various types, each suited for specific purposes and scales. Here are some common types of computer networks: Types/Categories of Computer Networks Computer networks are classified according to organizational structure, usage patterns, and operational

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Career opportunity in data processing

Data processing is a crucial aspect of various industries, including technology, finance, healthcare, marketing, and more. There are several career options available in the field of data processing, catering to individuals with different skill sets and interests. Here are some career options to consider: Data Analyst: Data analysts collect, process, and analyze data to provide

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Software Maintenance

Software maintenance is crucial for ensuring the ongoing functionality and performance of computer programs. It involves various activities such as virus and spyware removal, software backup, and registry cleaning. It is recommended that every PC is equipped with antivirus and spyware removal applications, backup software, and a registry cleanser. Tips for software maintenance: Scan your

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Maintenance of computer

Maintenance Of Computer Hardware Part Computer hardware maintenance involves caring for, repairing, and replacing malfunctioning or broken computer hardware components. To ensure the longevity of computers and prevent hardware failures or data loss, regular maintenance is essential. Often, hardware failures occur unexpectedly. Excessive heat can hasten the deterioration of delicate circuits within the system, with

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Computer virus

Meaning of Computer Virus: A computer virus is a type of malicious software (malware) that is designed to replicate itself and spread from one computer to another. It attaches itself to legitimate programs or files and, when these infected files are executed or opened, the virus code is activated. Computer viruses are intended to cause

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Networking

A computer network is a system that establishes connections between two or more computers using communication links. It encompasses a processing framework comprising multiple autonomous, relatively low-speed workstations that can be accessed concurrently online. In this network setup, remote computer stations connect to a centrally positioned, advanced, high-speed processor through communication links like telephone lines,

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Distributed Database: Types, Architectures, Advantages & Disadvantages

A Distributed Database (DDB) encompasses multiple interconnected databases that are logically related and spread across a computer network. A Distributed Database Management System (DDBMS) serves as the software responsible for managing the DDB. It offers an access mechanism that renders the distribution transparent to users. A distributed database system permits the physical storage of data

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Parallel Databases: Advantages, Disadvantages, Shared Memory & Share Disk

Parallel Databases enhance processing and input/output speeds by leveraging multiple CPUs and disks in a parallel manner. The goal of a Parallel Database system is to optimize performance through the parallel execution of various tasks, including data loading, index creation, and query evaluation. Unlike serial processing, where steps are executed sequentially, parallel processing performs multiple

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Crash recovery

DEFINITION OF CRASH RECOVERY: Crash recovery refers to the process of restoring a database to a consistent and usable state after a system crash. This involves rolling back incomplete transactions and completing committed transactions that were still in memory at the time of the crash. The database reaches a point of consistency when it is

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