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 ...
Use PowerShell and WMI to Get CPU Information
Suppose you want to get some information about the CPU in your computer. Can you remember which Control Panel utility will provide that information? If you use a PowerShell script to access WMI you can always get the information you want no mater how they rearrange Control Panel. More ...
How SSL (Secure Sockets Layer) Works
SSL is a security protocol standard that encrypts communication between a web browser and a web server. Any organization that uses their website to transmit, receive, store, or display confidential or sensitive information such as passwords, credit card or bank account numbers, social security numbers, and so on, needs to use an SSL Connection. 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 ...
What is a Regular Expression?
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. Regular expressions are very powerful, but also difficult to understand and complicated to use. 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 ...
Introduction to Operating Systems
An operating system is software that acts as an intermediary between a computer user and the computer's applications and hardware. An operating system can be viewed as a resource allocator. Resources might be CPU time, memory space, file storage space, and input/output (I/O) devices. More ...
Area of an Ellipse Calculator
It's easy to calculate the area of an ellipse because it's similar to calculating the area of a circle ecept instead of Pi times the radius squared, its Pi times the long axis times the short axis. 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 ...
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 ...
Processor Interrupts
An interrupt is a signal to the processor indicating an event has occurred that needs immediate attention. When an interrupt occurs, the processors normal path of execution is interrupted in order to run a routine to service the interrupt requester. More ...
Regular Expression Basics : How many Matches?
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 count the number of matches. 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 ...
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 ...
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 ...
JavaScript to Copy and Paste Text to the Clipboard
In some applications, rather than the user's selection, you may want to copy the contents of a specific html element to the clip board. Or when the user initiates a Paste, you may want to direct the contents of the user's clipboard to a specific html element on the webpage. Here is the code for this. More ...
