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The Mechanical Universe

Draw with your finger


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Windows 10 Shortcut to Turn Laptop Camera On or Off
To prevent hackers from sneaking a look at you, turn your laptop camera off. This article shows you how to place a shortcut on your desktop that you can use to quickly turn your laptop camera on or off. More ...

IPv4 to IPv6 Transition With the Dual-Stack Technique
Transition from IPv4 to IPv6 has been slow. If you can't immediately convert all your network hardware to IPv6, the dual-stack technique allows the easiest operation of IPv4 and IPv6 devices on the same network. More ...

PowerShell Script to Show Last 5 Errors in Event Log
The Windows System eventlog is one of the most powerful components of the operating system because it keeps a log of everything that happens. Here I provide a powershell script to display the last 5 error entries in the log. More ...

The Difference Between EoP and PoE
Ethernet over Power (EoP) is a technology for sending network data over power lines. Power over Ethernet (PoE) is a technology for sending power over Ethernet network cables. More ...

Network on a Chip (NoC)
NoC (Network on a Chip) is a method of placing a much larger number of processors on a multi-core chip. Much like a regular network, NoC has multiple point-to-point data links that are interconnected by routing switches. More ...

Html5 section vs article Element Best Practices
Many new semantic elements where added to HTML5. The purpose of most of these new elements was easily discernible. But a web search reveals that there is much confusion about the relationship between the article and the section element. More ...

Regular Expression Basics : Match a Set of Characters
A Regular Expression (regex) is a sequence of characters that define a pattern that allows you to search, match, locate, replace, manipulate, and manage text. In this article you'll learn how to use regular expressions to match a set of of characters. More ...

The Power of a Positive Attitude
One of the most important personality traits required for the achievement of a successful life is a positive attitude. What I mean when I say positive attitude might be more accurately described as a realistic attitude. More ...

IPv6 Address Compressor Expander
Enter the IPv6 address in the top text box. Click on the appropriate button: Omit Leading Zeros, Consolidate Zeros Segments, Expand Zeros Segments, Replace Leading Zeros. The formatted address will appear in the bottom text box. More ...

SVG Basic Shapes Tutorials
This is an introduction to SVG (Scalable Vector Graphics) and tutorials with examples on how to use simple code to draw basic shapes. More ...

A JavaScript Function That Returns a Function
Its a fad now in JavaScript to code functions that return functions in order to avoid declaring global variables but the procedure is inefficient and unnecessary. More ...

Regular Expressions Lookarounds
In this article you learn how to match a pattern only when it comes after another pattern (or after not that pattern) or only when it comes before another pattern (or before not that pattern). More ...

Fundamentals of Windows Security
Today, criminals are more sophisticated, and groups have formed with significant financial backing to support the wrong doings of these groups. This book is for system administrators, cybersecurity and technology professionals, solutions architects, or anyone interested in learning how to secure their Windows-based systems. More ...

Regular Expressions Intervals
Regular expression intervals tell us about the number of occurrences of a character in a string. Curly braces are used to define a precise count of how many occurrences you are checking for. More ...

Regular Expression: Alternation
In this article you learn how to create an alternation regular expression that will match alternate patterns in a string. More ...

Find Your WiFi Password on Windows 10
One of the most common reasons to find your Wi-Fi password is to use it on another PC or device to connect to your Wi-Fi network. Here's how. More ...


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