A recently discovered FBI training document shows that US law enforcement can gain limited access to the content of encrypted messages from secure messaging services like iMessage, Line, and WhatsApp, ...

These simple tips and tricks can help ensure you're always reachable, no matter where you and your phone roam. Nelson Aguilar is an LA-based tech how-to writer and graduate of UCLA. With more than ...

On Windows 11 (and 10), the File Compare (fc) is a command-line tool that comes part of the system, and it allows you to compare two similar files to determine how they changed over time.

Getting started on the Linux command line might seem overwhelming at first, but the many commands you need to use will fall into place more quickly than you might imagine. Let’s start with some ...

Cellular signal boosters use big antennas to improve coverage in your home or car. These are the top signal boosters for apartments, houses, and vehicles. I’m one of PCMag’s mobile analysts.

You may have heard about UK PLC in news reports focusing on the economy. The term often appears in articles discussing the nation’s economic performance. So what is ‘UK PLC’? Is it important?

We also have a guide on how to restore a backup on Signal Desktop, so you might want to check it out. If you’re an advanced user, you might want to know how to use command line options in Signal ...

Risk Disclosure: Trading in financial instruments and/or cryptocurrencies involves high risks including the risk of losing some, or all, of your investment amount, and may not be suitable for all ...

在工业自动化领域，PLC（可编程逻辑控制器）作为核心控制设备，其之间的通信一直是实现高效生产和智能化管理的重要环节。近日，ABB推出的Network Variable List（NVL）通讯方式为PLC间的数据交换提供了一种便捷高效的解决方案，标志着工业通信技术的再一次飞跃。

ABB V3 PLC 之间，可以通过Network Variable List (NVL) 进行便捷的数据通讯(NVL 通讯) 。这种通讯基于UDP 协议，无需编程，使用简单。NVL 通讯基于Sender & Receiver 原则。一个PLC 为Sender, 另一个或其他PLC 为Receiver 。 ABB 的编程软件Automation Builder 基于CoDeSys ...