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The Mechanical Universe

Draw with your finger


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Area of a Quadrilateral Calculator
If you have a regular quadrilateral there are simple formulas to calculate the area. But if you have an irregular quadrilateral you can calculate its area by viewing it as two triangles bucked up against one another. Find the area of each triangle, and then add them together. More ...

Online Color Coded Resistor Calculator
To determine the resistance value of a color-coded resistor, select the colors matching each band from the drop-down lists. 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 ...

Easy CSS 3D Mouse-over Pressed Text Effect
I provide easy CSS code for 3d text when you move your mouse pointer over the 3D text shown above, the text will appear to be pressed. In this example, I configured the 3d text in a link. More ...

Gift Giving in the Workplace
One thing that can add to the stress of the holiday season is workplace gift giving. giving a gift to a supervisor or manager sets up a conflict of interest and an ethics problem. In my opinion, holiday gifts should be given only to children. 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 ...

Fundamental Digital Logic Gates
All the advanced features of the most powerful computers, such as mulicore and parallel processing are done with digital logic. In this article I explain the fundamental concept of digital logic in simple and clear language so that anyone can understand it. More ...

A Handful of Useful Run Commands: calc, notepad, wordpad, voice recorder, control
The Run dialog box which can be opened by pressing the [Windows] + [R] keys. Run dialog box is a rapid way to open programs. Here are some quick and useful Run commands. More ...

The figure and figcaption Tags
The html figure element is a container for an image and optionally for a figcaption element that defines a caption for that image. More ...

Minispreadsheet Instructions
This is the instructions for Minispreadsheet. Minispreadsheet is a tiny extremely easy to use spreadsheet. You can type text or a number into a cell, that's it. You can also apply simple formulas to a cell. More ...

HTML5 Header Element
The header element is one of HTML5's semantic elements. It provides a container for header information. A header element may contain ,logo author, navigation, search, version, copyright, and other such information. More ...

Introduction to Draw SVG Free Online SVG Drawing Application
A drawing created on a computer can be posted directly on the Web. Drawing on a computer with a vector drawing program is the best way to go. Draw SVG seems to meet the need. In this article I touched on only a tiny part of what Draw SVG can do. 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 ...

Learn Assembly Language Programming on Raspberry Pi 400
One of the easiest ways to learn assembly language programming is on the Raspberry Pi 400. The Raspberry Pi 400 is a complete personal computer built into a compact keyboard. More ...

Fiber Optic Bend Radius Standards
Fiber optic cable can be damaged by placing too much tension on the cable or bending the cable excessively during installation. Excessive bending or too much pulling force can permanently damage the fiber by causing micro cracks. More ...


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