The difference between a tablet and a mobile phone
The difference between a tablet computer and a mobile phone mainly lies in the different sizes, which leads to different usage scenarios. However, in the past, tablets and mobile phones were divided according to whether they can speak or not, and according to whether the size is more than 5 inches, now this boundary is becoming more and more blurred; The mobile phone has also reached more than 5 inches, and the tablet also supports making calls and running 3g or 4g traffic, so it is impossible to distinguish these. Moreover, both Android platform and iso platform are moving towards a unified platform, and there is no strict distinction between mobile phones and tablets.
If it is to be strictly distinguished, from the user's point of view, the mobile phone is online 7*24 hours, because it is necessary to make active and passive contact.
As a mobile phone, smart phone must meet its functions, but the core requirement is to talk, and the satisfaction of other functions is the icing on the cake. The tablet can also talk (voice or even video), but it is not necessary. Its core requirement is to meet the needs of users' office entertainment such as browsing the web and mobile office. Being able to speak is only a small requirement, not rigid.
Smart phones need to exist as mobile phones, which determines some of its characteristics, such as small size and portability. Therefore, under the limitation of scale, scale and meeting the needs of other users on the basis of calls are a pair of contradictions.
Platform computers are smaller and more portable than PCs, and should correspond to PC computers, not mobile phones. Therefore, product positioning and core requirements determine their differences, which can be summarized as the differences between mobile phones and computers.
Future mobile phones, handhelds (psp, 3DS, etc. ), e-books, tablets, notebooks, desktops, televisions, etc. Eventually, it will become a smart touch screen with different sizes, and the software can run on devices with any size.
There is not much difference in the functions of devices, but users will choose the usage scenarios of different devices according to their size, portability and endurance. On the premise of meeting the core needs of users, developers optimize the user experience and provide more intimate services for users according to different usage scenarios of different devices.
The Development of Tablet PC
In the late 1960s, Allen of Xerox Palo Alto Research Center? AlanKay put it forward? Dynabook？ He imagines that this is a computer that can run with him, and its main function is to help children learn. In order to develop Dynabook, Allen even invented the Smalltalk programming language and developed a graphical user interface, which is the prototype of Apple Macintosh. However, due to various objective reasons, the center does not support this idea.
1September 1989, GRiD Systems successfully manufactured the first commercial tablet computer and named it GRiD Pad. Its operating system is based on MS-DOS.
It can be said that from the late 1960s to the late 1990s, tablet computers were still in the initial exploration stage. Due to the limitation of hardware technology such as core chips, tablet computers are only popularized and used in a small range. Real commercialization should start with Microsoft. NET strategy conference in the new millennium.
In June 2000, Microsoft was in? . Net policy? TabletPC, which is still in the development stage, was exhibited at the conference for the first time. In June 2000, 165438+ 10, at Comdex Fall 2000, one of the three major computer exhibitions in the world, Mr. Bill gave a special speech on TabletPC, and defined Tablet PC as? General PC based on Windows operating system? . On June 8th, 2002, 65438+February 8th, 2002, Microsoft officially released TabletPC Edition and its special operating system Windows XP in new york, which marked that the tablet PC officially entered the commercial sales stage.
On the other hand, on 20 10, 654381October 27th, the rumored first-generation iPad was also unveiled. Of course, the concepts of Pad and tablet are very different.
2011September, with the release of Microsoft Windows8 system, the tablet camp expanded again.
On June 2012 19, Microsoft released the Surface tablet in Los Angeles, USA. The product is divided into two versions: SurfaceRT adopts Windows RT operating system, and the CPU is quad-core NVIDIA Tegra 3；; The Chinese version/professional version of Surface is pre-installed with Windows 8, and the CPU uses the third-generation Intel Core i5 processor. Since the Surface can be connected to an external keyboard, Microsoft claims that this tablet can be easily converted into a keyboard. Full desktop PC? . It is not difficult to see from the parameters of the two Surface that the core indicators such as CPU have been greatly improved, especially the improvement of the processor. The latest technology can provide strong support for the performance of tablet computers, enhance the characteristics, security and management of graphics cards, and make tablet computers faster and consume less power. Among them, the third-generation Intel Core processor adopts 22 nm process technology and the world's first new transistor technology with 3D architecture. The switching speed is increased by 37%, the power consumption is reduced by about 50%, and the graphics card function is greatly improved to help various commercial demonstrations.
At the 20 13 information technology summit (IDF), Ian Yang, Intel's global vice president and general manager in China, said that there are more and more products equipped with Intel processors, besides the common all-in-one machines, notebooks and ultrabooks, there are also tablets, mobile phones and various embedded systems. The functions of these products are changing with each passing day, and more and more advanced technologies are applied to practical products, such as touch, somatosensory interaction and facial recognition. Shi Haode, general manager of Intel's PC client division, said that Intel is about to release the fourth generation Intel Core processor series, which has been shipped to OEM customers and will be released at the end of the second quarter. Ultrabooks based on the 4th generation Intel Core processor series will bring exciting new computing experience and all-day battery life to consumers, achieving the most significant battery life improvement in Intel's history. Will it bring a new round to consumers through the convertible and pluggable ultrabook system? Two in one? In the amazing new device form, consumers can get a full-featured PC experience and the best tablet experience at the same time.
Internationally, the focus of the global flat panel display industry is shifting to China. In order to continue to seize the China market, overseas enterprises gradually changed their original strategy of refusing to export technology to China, and began to compete with local enterprises by investing in factories and setting up production bases in China. In this case, we should be alert to the situation that foreign enterprises transfer backward production capacity and get rid of their burdens.
It is predicted that in 20 13 years, foreign enterprises will further open up in the field of flat panel display, relax the restrictions on China's export production lines and technologies, and increase market expansion through cooperation with domestic panel, material and equipment enterprises. At the same time, the transfer of production capacity of advanced countries and regions to China will inevitably bring some impacts to domestic enterprises. Therefore, it is particularly important to adopt the correct way of strategic cooperation and competition.
From the domestic factors, China's flat panel display industry has entered a stage of rapid development, but a large number of key materials and equipment are imported from abroad, which is obviously different from foreign countries. It is predicted that in 20 13 years, China will continue to increase its policy support for key materials and equipment, and the supporting capacity of flat panel display products is expected to be improved, and its dependence on foreign imports will be reduced. It is predicted that in 20 13 years, domestic flat panel display enterprises will still be at a disadvantage in the competition of new display technologies, especially AMOLED, new backplane technology (LTPS, Ox ide) and ultra-high resolution display technology. With the expiration of the policy of "20 10~20 12 flat panel display industry development plan", whether or not to introduce new industrial incentive policies will directly affect the motivation of technological innovation and product innovation of enterprises.
History of mobile phones
If we go back, we will find that the concept of mobile phone appeared as early as 1940s. At that time, Bell Laboratories, the largest communication company in the United States, began trial production. 1940, Bell Laboratories manufactured the first so-called mobile phone. But because of its large size, researchers can only put it on the shelf in the laboratory, and people will gradually forget it.
1April, 973, engineer and technician of Motorola, a famous American company. Martin? Cooper. Invented the world's first civil mobile phone. When Cooper made the world's first mobile phone, he could use any electromagnetic frequency band. The first generation of analog mobile phones is actually to distinguish different mobile phones of different users by different frequencies. Second generation mobile phone? GSM system distinguishes users by a very small time difference. Today, the frequency resources are obviously insufficient, and the number of mobile phone users is also growing rapidly in geometric series. As a result, the updated CDMA technology, using different codes to distinguish different computers, came into being. The mobile phone using this technology not only has better call quality and confidentiality, but also reduces radiation. Can you make a phone call? Green mobile phone? .
Development history
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. More than 60 years later, Hertz confirmed the existence of electromagnetic waves in experiments. The discovery of electromagnetic waves has become the turning point from "wired communication" to "radio communication" and the origin of the whole mobile communication. As a scientist said, "Mobile phones were born on the shoulders of telegrams and telephones. Wireless communication is impossible without the efforts of predecessors.
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, one is called? Nathan. Stubblefield? Americans made the first wireless telephone equipment in a country house in Murray, Kentucky. This wireless mobile phone is the best choice for human beings. Cell phone? The earliest exploration and research on 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, outstanding performance? Altai? The system won the gold medal at the Brussels World Expo.
1973, a man stood on the street in new york, pulled out a wireless phone about the size of two bricks and started talking.
Martin? marty cooper
This man is Martin, the inventor of mobile phone? Cooper. At that time, he was an engineer at Motorola. This was the first mobile phone in the world at that time.
1975, the Federal Communications Commission (FCC) of the United States determined the spectrum of land mobile phone communication and large-capacity cellular mobile phone. It is ready for the commercial application of mobile phones.
1979, Japan opened the world's first cellular mobile phone network.
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.
The modern mobile phone was born in 1987. 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.
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