The technical requirements for establishing a connection between a PC and a television depend on the method chosen.
Via HDMI: If you want to connect the PC to the TV using an HDMI cable, you must pay attention to the size of the HDMI port. Depending on the device, HDMI cable ports exist in the following sizes: HDMI, mini-HDMI, and micro-HDMI. No additional audio cable is required when using an HDMI cable, regardless of the port size, since HDMI also carries sound.
Via DVI and VGA: DVI cables are usually used as a connection between a PC and a computer monitor. However, some televisions also have a DVI port. Since only the image is transmitted from the PC in this case, an additional audio cable or external loudspeaker is required. VGA connectors are among the oldest PC connectors and also only transmit the image. This means that an additional cable or device for audio output is also required. DVI and VGA are usually only supported by older PCs.
Via WLAN: If you want to connect your computer to your TV wirelessly, you will need an adapter that transmits the signal between the PC and the TV. The HDMI stick Google Chromecast is used for transmissions from the Google Chrome browser, and an Apple TV adapter is used for Apple devices. MacBooks from macOS version Mojave 10.14.5 support adapterless streaming via AirPlay 2. If your TV and Mac have AirPlay 2 support, no additional adapter is required.
Via Miracast: With the wireless Miracast transmission service, you can establish a direct connection (Peer-to-Peer via the Wi-Fi Direct standard) between a PC and television in order to transmit PC content. To do so, both the PC and the television must support Miracast. For Windows, support is integrated starting with Windows 8.1. Macs, on the other hand, do not currently offer Miracast support.