2, Qualcomm Snapdragon 8155 is a powerful 8-core car chip, it uses an advanced 8-core design of 1, 3, 4, of which the large core frequency of up to 96GHz, three high-performance core frequency of 42GHz, and four low-power small core frequency of 8GHz. This configuration makes its CPU performance more than most of the car class chips.
3, the full name of the chip is Qualcomm Snapdragon SA8155P, which is an upgraded version of the 820A chip, and is currently Qualcomm's top car gauge chip, in the wholeMade of single chip microcomputer plus peripheral circuit, single chip microcomputer development of the underlying development, program writing with assembly or c language such as delay with single chip microcomputer to do the program, to calculate from the crystal oscillator, and plc is not the same, manufacturers provide a programming software, you can use ladder diagram programming. The price is different.
First, the single chip is a chip, can not be used independently. The PLC is a universal controller composed of single chip microcomputer, which can be used directly. The use of single-chip microcomputer for control requires auxiliary circuits, such as crystal oscillator, reset, power supply, input and output circuits. In addition to programming, but also to do their own circuit board, professional knowledge is not convenient to use. The firstTwo, the programming is different. Single-chip programming requires assembly language or C language, the difficulty will be relatively large.
The difference between plc and MCU: different operating environments, different programming methods, different execution speeds, different expansibility, different communication interfaces. Operating environment Different PLC design for industrial environment, anti-interference and waterproof and dustproof ability, can be applied to harsh conditions. The single chip microcomputer is used in various environments, the anti-interference ability is poor, and it is not suitable for extreme conditions. Different programming methods PLC use ladder diagram and other intuitive graphical language programming, easy to maintain.
Essentially, PLC itsIt is a set of single-chip microcomputer (single-chip microcomputer range is very wide) system. However, PLC also has its own characteristics: PLC widely uses ladder diagram instead of computer language, which has certain advantages for programming.
. PLC is a product built on the single chip microcomputer, the single chip microcomputer is a kind of integrated circuit, the two are not comparable. 2. Single chip microcomputer can form a variety of application systems, from micro, small to medium and large, PLC is a special case of single chip microcomputer application system.
A programmable logic is a PLC. programmable logic device English full name: programmable logic device is PLD. PLD is produced as a general integrated circuit, and its logic function is determined according to the user's device programming. The integration degree of general PLD is high enough to meet the needs of designing general digital systems.
is called FPGA, and the MCU is notIt's a thing. Logic devices can be classified into two main categories - fixed logic devices and programmable logic devices. True to its name, the circuits in fixed logic devices are permanent, they perform one or a set of functions - and once manufactured, they cannot be changed.
Second, the programming is different. Single-chip programming requires assembly language or C language, the difficulty will be relatively large. The system program is solidified in PLC, and only needs to use the corresponding programming language, which is simple and easy to learn, so the programming is relatively simple.