TL
TL

Math: Slide and Divide

Explaining the Mystery

Tim Leffelman

Programmer, Engineer

January 04, 2023

If your browser does not render the math expressions correctly, try right-clicking on one of the math expressions and selecting Math Settings|Math Renderer|Common HTML.


As an engineer, I have had numerous high school and college math classes:

  • Algebra I
  • Algebra II
  • Geometry
  • Trigonometry
  • . . .

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PCIe Gigabit Ethernet + 3x USB 3

Found Three Different Options

Tim Leffelman

Programmer, Engineer

November 27, 2020

My PC has plenty of onboard USB 2.0 ports, and I have previously added four USB 3.0 ports via one PCIe card. I am out of slots on the mother board, but would like to add an additional USB 3.0 channel because I run a Windows Storage Space configured as a 2-way mirror using two external USB 3.0 drives, and I would like to put those drives onto . . .

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Bits & Bytes - Counting in Binary and Decimal

How Integers are Stored in Memory

Tim Leffelman

Programmer, Engineer

October 31, 2018

One of the most fundamental aspects of any digital device is the way integers are stored in memory. If you want to get down into the number bases, bits and bytes of integers, etc. then this article is for you.

Digits and Number Bases

Just what is the "number base" of a number system? Simply put, it's the number . . .

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Disney Didn't Start Star Wars

The Next Viral Video!

Tim Leffelman

Programmer, Engineer

March 10, 2018

I really have no idea if it will get less than a hundred views or go viral, or most likely fall somewhere in between. But, it sure was fun to make, and a great way to try out some things on my new CyberLink Director Suite 6 software. The kids and I rocked in New Years Eve by making the first YouTube video, Disney Didn't Start Star Wars, . . .

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Normally Open vs Normally Closed

Electrical Switch Contacts

Tim Leffelman

Programmer, Engineer

February 03, 2018

When it comes to electrical switches and contacts, many people seem to be confused by the terms Normally Open (NO) and Normally Closed (NC). The root of the problem seems to start with the fundamental concept of what it means to be open or closed. This post attempts to clarify those concepts.

In every day terminology, movement is . . .

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Visual Studio / Team Foundation Server Lockups

Check your UISettings.config

Tim Leffelman

Programmer, Engineer

November 29, 2017

For the past several weeks, my Visual Studio (VS) / Team Foundation Server (TFS) has been freezing more and more. It started with file comparisons, moved to synchronizations, progressed to numerous other functionality,and eventually reached the point where I could not even submit any code changes. I uninstalled/reinstalled Visual Studio . . .

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C# .NET Replace several different chars with strings

Can use this for escaping XML values, etc.

Tim Leffelman

Programmer, Engineer

August 15, 2017

The String.Replace() function can be used to replace all instance one character with another character ( String.Replace(char, char) ), or all instance of one substring with another string ( String.Replace(char, char) ). But, it is sometimes necessary to replace all instance of several different characters with a different string for each of . . .

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