First, SOC: including CPU, GPU, coprocessor, baseband, ISP, etc. It can be understood that a plurality of independent chips are packaged in one chip.
1, the Chinese name of CPU is central processing unit, which is the core of the whole chip, equivalent to the brain and heart of mobile phone. The operation and efficiency of mobile phones have a great relationship with CPU. After a period of use, mobile phones become stuck and slow.
2.GPU, also called graphics processor, is what we often say about the graphics card on the computer. The difference with computer is that it is integrated with CPU on a chip. Users who play games should not only look at the level of CPU, but also pay attention to its GPU, because the role of GPU is far greater than that of CPU when playing games.
3.ISP plays a decisive role in the quality of photos taken by mobile phones. The imaging quality depends not only on the algorithm and camera, but also on the processing of photos within a few tenths of a second.
4. The coprocessor is responsible for handling some small tasks, such as GPS, WIFI, step counting, etc. , can reduce the power consumption of mobile phones. If the CPU is used for such a task, it will be overqualified.
5. The function of 5.DSP is the same as that of coprocessor, which is responsible for the small tasks of CPU and the small tasks of GPU.
6. Baseband is mainly responsible for mobile phone communication and consists of various communication modules.
Second, memory.
It is what we often call running memory. In terms of running memory on a single charge, the larger the running memory, the smoother the phone will be. The mainstream in the market is LPDDR3, and a new generation of LPDDR4 has also started to be standard on some models.
100-yuan mobile phones generally have 3G running memory, 1,000-yuan mobile phones generally have 4G and 6G running memory, and flagship machine generally has 6G and 8G running memory. The recently released Xiaomi MIX3 special edition of the Forbidden City runs in memory 10G. Apple mobile phones generally have low running memory, and now the highest running memory is 4G, because people have a good experience in IOS system.
Third, ROM.
ROM is what we often call mobile phone memory, which is used to store mobile phone software. At present, there are 32G, 64G, 128G and 256G mobile phone memory. There are mainly EMMC storage and UFC storage, and the performance of UFC is better than EMMC. Generally, flagship machine uses UFC for storage. Mobile phone transmission speed, download speed and software installation speed are related to memory quality.
Fourth, lithium batteries.
Lithium batteries are mainly composed of protective plates and batteries: batteries and protective plates.
The battery cell consists of electrolyte, negative plate, diaphragm and positive plate. The negative electrode plate, the diaphragm and the positive electrode plate are laminated or wound and packaged, then electrolyte is injected, and after packaging, the negative electrode ear and the positive electrode ear are led out to make the battery cell.
The protective plate protects the batteries that release carriers and store energy, and cannot be used alone, because it is easy to overcharge and overdischarge when used alone, which will cause damage and failure to activate the batteries, and even lead to serious safety accidents, so it must be used in conjunction with the protective plate. The protective plate can prevent the battery from discharging, flowing and charging.
Verb (short for verb) screen
The external parts of the screen, the most intuitive experience, the quality of the screen directly affects our visual experience.
The common screen types in the market are organic light-emitting diode screen and LCD screen. Most mobile phones use LCD screens, which can be subdivided into non-IPS screens and TFT screens. Most organic light-emitting diode screen mobile phones are Super AMOLED screens. Visual effect of TFT screen < < ISP screen < Super AMOLED screen, domestic screen manufacturers have BOE and Tianma, and foreign countries have Samsung and Sharp.
At present, the resolution of mobile phone screen has three specifications: 2K, 1080P and 720P. The highest resolution is 2K, 720P can clearly see the graininess on the screen, and 1080P is the blue-light quality of movies we often watch. The 2K screen is very delicate visually, and only flagship machine will be equipped with 2K screen, which also consumes electricity.
Sixth, the sensor.
Put it on the front of the phone, in the same area as the front camera. The phone has automatic brightness function, and the sensor will sense the change of light to adjust the screen brightness.
Extended data:
The development history of mobile phones:
183 1 year, Faraday discovered the phenomenon of electromagnetic induction in England. Maxwell further expounded the research results of Faraday and others with mathematical formulas, and extended the theory of electromagnetic induction to space. The discovery of electromagnetic waves has become the turning point from "wired communication" to "radio communication" and the origin of the whole mobile communication.
65438+May 24th 0844. Morse's telegram sent the first telegram from Washington to Baltimore in human history. "What a miracle God has created!" "
1On June 2, 875, Bell accidentally spilled sulfuric acid on his leg while doing the experiment. He was in pain and shouted to his colleagues in the other room, "Come and help me!" " This sentence was transmitted to Hotell who answered the phone in another room through the telephone in the experiment, which became the first sentence transmitted by human beings by telephone.
1902, an American named "Nathan Stubblefield" made the first wireless telephone equipment in his country house in Murray, Kentucky. This kind of wireless mobile communication telephone is the earliest exploration and research on "mobile phone" technology.
1940, Bell Laboratories made mobile phones.
1946, it was the first time in the world to make a call from a moving car in St. Louis with a mobile phone.
1957, Leonid, an outstanding engineer in the Soviet Union. Kupriyan Norwich invented лк- 1 mobile phone. In 1958, he further improved his mobile phone. The weight of the equipment is reduced from 3 kg to 500 g (including the battery weight), and the shape is simplified to the size of two cigarette cases, so that you can make a phone call anywhere in the city and connect any fixed telephone. By the mid-1960s, the mobile phones in Norich, Kupriyan had been able to work effectively within 200 kilometers.
From 65438 to 0958, the Soviet Union began to develop the world's first fully automatic mobile phone communication system "Altai" (алтай). 1959, Altai system with excellent performance won the gold medal in Brussels World Expo.
1973, a man stood on the street in new york and pulled out a wireless phone about the size of two bricks.
1975, the Federal Communications Commission (FCC) of the United States determined the spectrum of land mobile phone communication and large-capacity cellular mobile phone.
1982, GSM (mobile communication task force) was established in Europe.
1985, the first commercial mobile phone was born. It puts the power supply and antenna in an example and weighs 3 kilograms.
1987, a modern mobile phone was born. Its weight is still about 750 grams, which is like a big brick compared with today's mobile phone with only 60 grams.
Since then, the "slimming" of mobile phones has become more and more rapid. 199 1 year, and the weight of the mobile phone is about 250g. 1in the autumn of 996, a mobile phone with a volume of 100 cubic centimeter and a weight of 100 gram appeared. Since then, it has been further miniaturized and lightweight, and 1999 has been lighter than 60 grams.