Mr. Liu, the head of a Hong Kong parallel shopping mall, said that he is optimistic about the new iPad and is ready to send people to foreign countries to scan the goods. The first batch is about 100, and it is expected to be sold after 3 days. He said that the mainland’s huge demand for the new iPad directly led to speculation in Hong Kong. He estimated that the price of the first batch of new iPads could be more than double the price. Asked if the iPad 2 price cuts, he said that temporary impact is not significant, this week's parallel price is about 200 yuan lower than the public price. He added that currently the iPad 2 is almost sold out and there is no stock.
According to a market research report, the current market share of Apple's iPad is as high as 73%, far from the 5% market share of tablets using Google Android platform, indicating the iPad’s monopoly in the industry.
However, according to media reports, Shenzhen Proview’s attorney who has a trademark dispute with Apple stated that Shenzhen Proview strongly protested Apple’s launch of the new iPad and will take action to block the new iPad’s import and export. Acting lawyer Ma Dongxiao said: "Proview Technologies will complain to the Customs this month to apply for customs seizure and to prevent Apple's import and export of iPad products, mainly for the iPad 3."
Small computer system interface (SCSI) is an independent processor standard for system level interfaces between computers and intelligent devices (hard disks, floppy drives, optical drives, printers, scanners, etc.). SCSI is an intelligent universal interface standard.
In addition to SCSI, IDE is also a very common interface. From the point of view of ease of use, IDE is more suitable for ordinary users. In addition, personal computer users not only need to configure a few peripherals, but also do not require high speed. Therefore, it is more appropriate to choose IDE interface. In addition, IDE also has the characteristics of high performance price ratio and wide application. Although the SCSI interface has many incomparable characteristics, the price of the interface and its peripherals is too expensive to be borne by ordinary users, which determines the limitation of its actual use range.
1. The working mode of IDE requires the whole process participation of CPU. When the CPU reads and writes data, it can't perform other operations. In this case, in the multitask operating system of Windows 95 / NT, the system reaction will be greatly slowed down. The SCSI interface controls the data reading and writing operation completely through the independent high-speed SCSI card, so the CPU does not have to waste time to wait, which obviously can improve the overall performance of the system. However, IDE interface has also made great improvements to improve this problem. DMA mode can be used instead of PIO mode to read and write data. DMA channel is responsible for data exchange, which greatly reduces the CPU consumption. However, comparing the CPU utilization of SCSI and IDE, we can find that SCSI still has considerable advantages.
2. The scalability of SCSI is larger than that of IDE. Generally, each ide system can have two IDE channels, with a total of four IDE devices. The SCSI interface can connect 7-15 devices, much more than IDE, and the cable connected is far longer than ide.
3. Although the price of SCSI device is higher, compared with IDE, the performance of SCSI is more stable, durable and reliable.
SCSI Solder Type Section
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