Bluetooth is the communication tool used by a huge amount of electronics. Learn how the frequency signal is generated and how it's used. In a simple overview of the different versions, we will show how Bluetooth has evolved and been refined. You can also learn something about the specifications and security of this communication standard.
USB cables and connectors are our constant companions, but the sheer variety and number of options can get confusing. Let's take a closer look at the most common USB types and see what the latest newcomer USB-C brings into the fray.
The decreasing size of phones has led manufacturers to reduce the space for a SIM card. Besides standard SIM cards, you will also come across MicroSIM or NanoSim. Most operators offer a free replacement of the existing SIM card with a different type.
The screen size is measured by the distance between the left bottom and top right corners of the display. The screen size is usually given in inches, with 1"= 2.54cm.
Each type of display is suitable for different purposes.
The resolution specifies the number of pixels (pixels) that are displayed horizontally and vertically on a screen. The higher the resolution, the sharper and more detailed the image.
