It is hardly possible to overestimate the importance of power supplies in modern engineering and electronics. Such equipment allows the transformation and transmission of electrical power within an appropriate format depending on its.application to a particular device. However, such concepts of electricity as alternating current (AC) or direct current (DC) power supply are important for both active people and professionals alike in the area. The present paper sets out to do just that: describe the operational principles, advantages, and typical applications of two of the most important power supply units - AC and DC.

Electronic Health Records (EHRs) have become an integral part of modern healthcare, transforming how personal health information is stored, shared, and accessed. HIPAA, the Health Insurance Portability and Accountability Act, mandates the careful management of patient data. As we increasingly rely on digital platforms, EHR technology plays a fundamental role in ensuring HIPAA compliance.

We live in a digital era, where people see the internet as their primary source of information. They consume information through it for various purposes. You will see people accessing the internet to entertain themselves through online content. They may also try to find solutions to the problems they face in their everyday lives by consuming the information available online. The online information and content also help them stay aware of current affairs.

In today's world, security is a top priority for both businesses and homeowners. One of the most effective tools in preventing criminal activity is the use of security cameras. According to a study conducted by the Urban Institute, neighborhoods with visible surveillance cameras experienced a 20% to 40% decrease in crime. Another survey by the Office of National Statistics in the UK found that 58% of burglaries occurred at properties without security cameras or alarms. These numbers highlight the significant role cameras play in deterring crime.

Internet attacks are not uncommon in today's world, as many businesses are built online. User data is stored in a cache and is visible to third parties. Therefore, if you have a site or page on the web, you need to take security measures to avoid having your contacts stolen. Attackers use several methods, such as two-factor encryption, connection of proxy servers, VPN services. And the use of paid search programs allows you to quickly find out who is hiding behind the unknown person who is bothering you.

The COVID-19 pandemic exposed significant vulnerabilities in global supply chains. With technology companies scrambling to respond to unprecedented disruptions, it became clear that traditional supply chain models were no longer sufficient. When we look back on the supply chain crisis before and during the pandemic, it is easy to identify the areas of improvement because we now have so much more information and the benefit of hindsight, but during the crisis, it was extremely challenging to find immediate ad-hoc solutions, which clearly illuminated a lack of contingency planning.