curiosity

Public IP address and DDNS: what it is, how to check and set it to reach devices in LAN from WAN

A computer or any device, when connected to a network (LAN), is identified by an IP address assigned by the router.  This address is usually in the form 192.168.X.Y and it is released by the router’s DHCP to identify the various devices connected to it.   However, since the router itself is connected to the Internet […]

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Slow PC? How to check on tasks that clog system interrupt and DPC requests

If we happen to see the PC is running slowly and, by opening Task Manager, we can see that the system interrupt consumes a lot of CPU, how can we determine which driver to remove?  What it is:  In fact, the interrupt is an asynchronous request that executes a hardware component following its synchronous (execution) event.  In case of an interrupt,

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How to verify the security of certificates installed in Windows

Sigcheck is a useful tool provided free of charge by Microsoft to check your computer for harmful digital certificates.  You can download it from the Ms-TechNet website.   You can download it from the site, click on  How to use and once you have downloaded the tool and extracted the .zip, open a prompt window on the folder (by pressing the SHIFT key

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Introduction to Astronomical Observation Instruments and Deep Space Photography

In order to be able to observe the night-time cosmos we have to use special precision instruments, such as telescopes, eyepieces frames and cameras …  You will find an introduction to the world of astrophile and amateur astrophotography in this article   Telescopes  The telescope is an optical instrument with which we are able to observe the Universe, capturing

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