The operating system of LCD TV has,What is the difference between what it does not have?

The general perception is that PLCs do not have an operating system, however, there are programming languages. Most PLC manufacturers use structured text programming languages that are similar to high-level languages such as Basic, Pascal, or C, but have been simplified in terms of how statements are expressed and the types of statements that are used for ease of application.

1. About PLC:

The International Electrotechnical Commission (IEC), in the third draft of the PLC standard in 1985, defined PLC as follows: "is an electronic system that operates in numbers and is designed for use in an industrial environment." It uses programmable memory to store instructions for performing operations such as logic operations, sequence control, timing, counting, and arithmetic operations, and controls various types of machinery or production processes through digital and analog inputs and outputs.

Programmable controllers and their related equipment should be designed according to the principle that it is easy to make the industrial control system form a whole and expand its functions. From the above definition, it can be seen that PLC is an industrial control computer that uses programs to change control functions, in addition to completing a variety of control functions, it also has the function of communicating with other computers.

Second, the working principle of PLC:

The PLC works in a "sequential scan, continuous cycle" method. That is, when the PLC is running, the CPU is programmed according to the user's control requirements and stored in the user's memory, and the instruction step number (or address number) is used for periodic cyclic scanning, if there is no jump instruction, the user program is executed sequentially from the first instruction until the end of the program, and then returns to the first instruction to start the next round of new scanning, and in each scanning process, the sampling of the input signal and the refresh of the output state are also completed.

A PLC scan cycle must go through three stages: input sampling, program execution, and output refresh.

PLC in the input sampling stage: firstly, the on-off state or input data of all input terminals temporarily stored in the input latch are read in order by sweeping, and they are written into the corresponding input state registers, that is, the input is refreshed, and then the input port is closed and the program execution stage is entered.

PLC in the program execution stage: according to the order of the user's program instructions stored in the order of scanning and executing each instruction, after the corresponding calculation and processing, the result is then written into the output state register, and all the contents in the output state register change with the execution of the program.

Output refresh stage: When all instructions are executed, the on-off state of the output state register is sent to the output latch in the output refresh stage, and the output is carried out in a certain way (relay, transistor or intercrystalline) to drive the corresponding output device to work.

What is the difference between LCD TVs with and without an operating system.

TV has an operating system,It's almost the same as a mobile phone and computer,You can install applications on your TV,Such as shopping、Watching movies、Internet access and other applications,Achieve corresponding functions。

The main difference is that the new TV with an operating system can add a lot of functions through software upgrades and installation on the premise of not changing the hardware, and can have better network support and interconnection with mobile phones,To put it bluntly, it is essentially a computer with a large screen,And the traditional pure hardware TV has all the functions fixed since the factory,It cannot be changed。

Now the general new TVs come with Android system,There is a TV with its own Android system, you can install QQ like an Android mobile phone、Games and network TV and other software,As long as you connect to the network, you can watch TV for free,Such as installing Taijie**TVversion。

Most of the operating systems used by Hisense's smart TVs are Android operating systems; There are also some ordinary smart TVs(Also known as network TVs)It uses Hisense's self-developed operating system。

1、Hisense smart TVs are divided into ordinary smart TVs and Android smart TVs; Ordinary smart TVs use Hisense's self-developed operating system,The system does not support the installation of third-party software,All software can only be obtained from Hisense App Store**; The Android smart TV uses the Android operating system, which supports the installation of third-party Android software (apk format);

2. Android smart TVs generally have the following characteristics:

2) Android system smart TV has become the third type of network information access terminal after the computer、Mobile phone,Here users can access the information they need at any time。

4) Android smart TV has a new remote control device, which can achieve linkage and interaction in various terminals.

It is better to buy an electric car dismantling machine and choose a TV with a stuffy Android intelligent operating system. There are several reasons for this:

1. Android TVs are powerful and have good compatibility, and are applied to most smart TVs by many manufacturers. At the same time, it has powerful functions and convenience of use;

2、Users want to modify the operating system of TV,Generally, it can't be realized。 Because the system of the TV is installed on the TV by the manufacturer before the TV leaves the factory, the user cannot modify it by himself;

3、The system of the TV is optimized with its hardware configuration,Other systems installed on the TV may cause incompatibility and inability to turn on,It is recommended that users do not modify the operating system of the closed-cover jujube TV by themselves。

First of all, the computer system is the operating system,Then the TV is just a display device,Therefore, the TV itself does not have a rental system,It's just that smart TV is the same as a computer,So some TVs are as systematic as computers!

The one you're talking about is smart TV,This is the same as a mobile phone,In the past, we used to use ordinary mobile phones that could only call**,Send text messages,If you are on TV, you can only receive the signal of the TV station; Later, there were smart phones, which are actually mobile small computers, on which we can install all kinds of sleepy software, and can go online to query the information we want, watch, listen to or something. In the future, TV is also developing in this area, you can also install software, you can also surf the Internet, we are not passive to receive TV programs, we can choose the content we want according to our own wishes, it is much more convenient. As for the system, there are not only Android, but also other systems, just like the system of mobile phones and computers.

At that time, it was said that it was a smart TV, which was to transplant the functions of the computer to the TV. In addition, you can also realize the function of smart TV by adding a set-top box,For example, the current Xiaomi box or something,In this case,TV is equivalent to a display,The set-top box is equivalent to the host of the computer。

The main reasons why the screen of network TV is being started are as follows:

1. The network speed at home is too poor, resulting in the TV being loaded all the time; Believers.

2、Network TV is the same as the computer, there is a system,There will be a buffer for a period of time in the process of starting the system,It will only be displayed on the page branch and the mind is starting;

3、The set-top box of network TV is not connected correctly,Resulting in the TV cannot be displayed normally;

4. The set-top box is damaged, resulting in the failure to start normally.

If it's a smart TV,Yu Li Peina, like computers and mobile phones,There is an operating system,Only with an operating system can the town be used to operate and disturb the army,If it's an ordinary TV, then there is no operating system,You need to connect the set-top box to use。

Nowadays, televisions have the same system as computers, but they belong to different types of systems.

It depends on the situation,Zhishu limb deficiency TV has a system,Hunger is generally Android now,Different from the windows system of the computer,But there is no ordinary TV state burning drama。

The old TV has no system,Now smart TV or network TV is the same as a mobile phone,With Android system in the TV。

Now smart TVs are with a system,Generally, they use the Android system,It's just that the functions are not turned on so much,There are not as many functions as mobile phones。

The system is an operating system, and the systems of the two are completely different. Computer systems like Windows, Mac and Mac.

Hello, they are all systematic, like mobile phones, there are mobile phone systems.

Smart TV, the same as mobile phones. Ever, ordinary mobile phones only play ** text messages to watch TV. After only receiving the signal of the TV station, the Zhishou Yeyin machine, in fact, one is to take a small mobile electric finch spine to build a brain, and install various on it.

Every TV has it,But most users don't know much about the TV system,At present, many TV devices are developed based on the Android system,But there are also some self-developed closed systems,Let's take a look at the differences between these systems with Xiaozhi today!

Android OS:

Android operating system developed by Google, is an open-source mobile device operating system based on Linux, using the application layer, application framework layer, system running inventory layer and Linux kernel layer four layers of architecture, with open, simple software development, rich application three characteristics.

In terms of hardware platforms, the mainstream hardware platforms supported by the Android operating system include ARM, X86 and Rock Carry Pie MIPS architecture. Since "ARM+Android" occupies a large number of resources in the domestic mobile phone ecosystem, most of the ARM framework smart TV device chips have adopted Android or Android-based operating systems.

The common one is Xiaomi's MIUI, which is based on research and development. Sony's products use operating systems,DangbeiOSInter-deep customization。 Pros:

High openness; High simplicity of software development; The variety of applications is diverse. Disadvantages: The increase in the usage time of the device will cause the UI interaction to freeze.

Android TV operating system: Android TV was launched by Google in 2014, it is based on the system and adopts the "ten-inch user interface" design concept. Compared with the Android operating system, Android TV supports the free installation of software from Google's own app store and third-party app stores.

At present, the TV manufacturers on the market that use the Android TV operating system include Sony, Sharp, Philips, etc.

Advantages: Ergonomic design of the operation interface; It can be operated with a simple remote control; High app compatibility. Disadvantages: Like the Android operating system, it is easy to freeze after using it for a long time.

Apple TV is developed by Apple Inc., it is based on the iOS operating system, and the user interface also adopts a "10-inch user interface". Apple TV connects to the Internet through wireless or Ethernet ports, supports Apple AirPlay technology, and projects Apple iPhone, iPad, etc. to the TV. In terms of apps, users can't install the software covertly through the Apple App Store.

Samsung Tizen operating system Samsung Tizen was launched in February 2012 to fight the Android and iOS camps. It is based on the Linux system framework and combines two systems, BADA (Samsung) and Meego (Intel). Tizen is not only suitable for smart TVs, but can also be used on mobile phones, tablets, in-vehicle systems, netbooks and other terminal devices.

Pros: Simple interface; Multitasking interface is supported. Disadvantages: The number of adaptable applications and devices is small.

1. Intelligent interface developed based on Android system.

2. Intelligent interface developed based on Alibaba Cloud OS.

3. Intelligent system developed based on Windows and Linux.

Relatively speaking, Android has good compatibility and is used more. Aliyun and other film and television programs are complete, easy to use, Windows is powerful, and Android and Linux are developed together, with a refreshing interface and strong performance. Whatever it is, but recently the State Administration of Radio, Film and Television has seized it, and many of them can't be seen.

Android and Windows seem to be fine for the time being, but sooner or later, the knife of the State Administration of Radio, Film and Television will have to be put on the neck.

If you don't have a system, even if you do, it's Android

I haven't really studied this, I haven't heard of it.

If you are buying a TV, it is generally better to choose a TV with an Android smart operating system.

1. Android TVs are powerful and have good compatibility, and are applied to most smart TVs by many manufacturers. At the same time, it is also loved by users because of its powerful functions and ease of use.

2、If the user wants to modify the operating system of the TV,Generally, it cannot be realized;Because the system of the TV is installed on the TV by the manufacturer before the TV leaves the factory, the user cannot modify it by himself; The system of the TV is optimized with its hardware configuration, and other systems installed on the TV may cause incompatibility, crash, and failure to turn on, so it is recommended that users do not modify the operating system of the TV by themselves.

A small part of today's TVs are self-madeUIs,Many smart TVs are based on the new UI made by the Android system。

The operating system does not have much reference value when buying a TV,After all, it is the hardware that is purchased,The operating system has little impact on the performance of the TV。