David L. Farquhar on technology old and new, computer security, and more
The vulnerability scanner Qualys has the ability to filter superseded updates in its reports and over the API. This is a popular feature. Unfortunately, it does have some caveats that aren’t always very well understood. Here’s what you need to know about Qualys superseded updates and its caveats.
The Tandy 3-in-1 expansion for the Tandy 1000 EX and HX make these compact vintage PC compatibles much more useful. Here is my experience with this device, and some tips.
Two versions of this device exist. The first expands the memory to 640K and provides UMBs, compact flash for mass storage, and an RS 232 port. These are usually available on Ebay for around $100 US. The newer version 2 of the device adds all of that as well as a standard parallel port.
Lionel scenic plots debuted in 1927 with the #195 illuminated terrace, a 19×22 inch platform built to provide a landscape for three houses, two #56 lamp posts, and a #90 flag pole.
The plot, and the various others that followed, solved two problems. They provided instant scenery for temporary floor layouts, and instant scenery for more permanent layouts for those who didn’t have the ability or confidence to attempt to scenic their layout themselves.
A lot of modern computers don’t come with PS/2 ports anymore, the reason being that USB replaced most of the ways we used to connect external peripherals to computers. But sometimes you need those ports on a modern or modern-ish computer. Here’s how to add PS/2 ports to a Dell Optiplex computer.
A former Microsoft executive referenced watermelon KPIs the other day on social media. It’s been a long time since I’ve heard that term, but I see examples of watermelon KPIs frequently. Let’s talk about what watermelon KPIs are, how to recognize them, and why they are bad, but people still love them.
A watermelon KPI is a statistic or metric that looks good, but upon further examination, is actually bad. Like a watermelon, these KPIs are green on the outside, but red on the inside.
I watched a YouTube video recently about a Tandy 1000sx and he inquired about what kind of upgrades he should try. So let’s explore some options for upgrading a Tandy 1000 SX, or the models it replaced, the Tandy 1000 and Tandy 1000A.
The Tandy 1000 and Tandy 1000SX have ISA expansion slots, giving them more options for upgrading than the IBM PCjr or the compact all-in-one Tandy 1000EX or HX. But the Tandy 1000SX with five slots can go a step further than the 1000 or 1000A, which only have three slots.
Here’s a question that comes up from time to time on train forums. What do the build dates on Lionel trains mean? In the Lionel postwar era, not a lot. At least not if you’re looking to figure out the actual age of the model.
The build dates on Lionel postwar trains, and largely for MPC-era trains as well, indicate when the model was first released, not when the example you hold in your hands was built.
I ran into a compatibility issue with the formatting in an Excel file. When I tried to open the file in a Python program using Pandas, as one does, I got the following error: ValueError: Colors must be aRGB hex values.
Very old versions of xlrd (version 1.2.0) can get around the color problem and open the file anyway, but Pandas requires version 2.0.1 or newer. I got around the problem by using an old xlrd to open the file and rebuild the file with a current version of xlsxwriter so Pandas could open the resulting file.
I’ve been buying Ecosmart light bulbs at Home Depot since the summer of 2015. Ecosmart is Home Depot’s house brand. At the time I started buying them, they seemed like good bulbs for the money. The last time I bought bulbs, they had pretty much crowded everything else off the shelf. So let’s talk about Ecosmart light bulbs and whether they are any good.
There were four major revisions of the Amiga 500 motherboard released, and that matters if you are trying to upgrade them. Fortunately, if you know what to look for, you can quickly distinguish between all four, and you can even identify them without opening the case. Although it is certainly easier to identify them if you can see the entire board.