The Future of Mobile Payments – Safer and More Convenient

Thanks to credit and debit cards, we know that you can walk around with no cash in your wallet and still be ready to make a purchase just about anywhere. However, thanks to mobile payments, people are now able to forego cards entirely, at least in the physical sense. There is a monetary revolution occurring, […]

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The size of the Internet – and the human brain

Last September I asked if the human brain were a hard drive how much data could it hold? I concluded that approximately 300 exabytes (or 300 million terabytes) of data can be stored in the memory of the average person. Interesting stuff right? Now I know how much computer data the human brain can potentially hold, […]

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How to rebuild an old PC

1. Format your hard disk to ensure you have completely remove all the data in it – remember that even formatting your disk might not remove all your data. 2. Install an new Operating System. If you are looking at Windows, XP might be a good choice for an old PC, however 7 also handles low spec hardware […]

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Update Data in Mysql using PHP

Update/Edit data from mysql database, can do it easily. Overview In this tutorial, we create 3 PHP files for testing our code. 1. list_records.php 2. update.php 3. update_ac.phpSteps 1. Create table “test_mysql” in database “test” 2. Create file list_records.php 3. Create file update.php 4. Create file update_ac.php STEP1: Set Up Database Create database and table […]

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Kotlin

Statically typed programming language for modern multi platform applications What is Kotlin? Kotlin is an OSS statically typed programming language that targets the JVM, Android, JavaScript and Native. It’s developed by JetBrains. The project started in 2010 and was open source from very early on. The first official 1.0 release was in February 2016. What […]

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What is Networking?

Networking is the practice of linking multiple computing devices together in order to share resources. These resources can be printers, CDs, files, or even electronic communications such as e-mails and instant messages. These networks can be created using several different methods, such as cables, telephone lines, satellites, radio waves, and infrared beams. Without the ability […]

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Use Python and cx_Oracle to build Oracle Database applications

Python is a general-purpose open source language. It is interpreted, and it is object-oriented with class-based inheritance. Everything in Python is an object, including classes, functions, and modules, so anything can have methods and attributes and can be passed as arguments to functions. Python is dynamically typed, which means that the types of variables do […]

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Common Problems (and Their Solutions) JAVA

Compiler Problems Common Error Messages on Microsoft Windows Systems ‘javac’ is not recognized as an internal or external command, operable program or batch file If you receive this error, Windows cannot find the compiler (javac). Here’s one way to tell Windows where to find javac. Suppose you installed the JDK in C:\jdk1.8.0. At the prompt […]

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CyberSecurity

Cybersecurity is the body of technologies, processes and practices designed to protect networks, computers, programs and data from attack, damage or unauthorized access. In a computing context, security includes both cybersecurity and physical security. Ensuring cybersecurity requires coordinated efforts throughout an information system. Elements of cybersecurity include: Application security Information security Network security Disaster recovery / business […]

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