What is the difference between a USB flash drive and a solid state drive?

Solid State Disk (Solid State Disk, IDE FLASH DISK, Serial ATA Flash Disk) is composed of a control unit and a storage unit (FLASH chip), simply put, it is an array of solid-state electronic storage chips and made of hard disk (the current maximum capacity of 416GB), the interface specifications and definitions of the solid state hard disk, The interface specifications and definitions, functions and methods of use of solid state drives are identical to those of ordinary hard disks. The shape and size of the product is also completely consistent with the ordinary hard disk, including 3.5", 2.5", 1.8" types. Because the solid state hard disk does not have the ordinary hard disk rotating media, and thus excellent shock resistance, while the working temperature is very wide, extended temperature electronic hard disk can work in -45 ℃ ~ +85 ℃. Widely used in military, automotive, industrial control, video surveillance, network monitoring, network terminals, power, medical, aviation, etc., navigation equipment and other fields.

U disk that flash memory, the principle: the computer to the binary digital signals into a composite binary digital signals (adding the allocation, checking, stacking and other commands) read and write to the USB chip adapter interface, through the chip to process the signal is assigned to the corresponding address of the EPROM2 memory chip to store the binary data, the realization of the storage of data. Jingbo Yunshang EPROM2 data memory, its control principle is the voltage control gate transistor voltage high and low values, the gate transistor junction capacitance can be saved for a long time the voltage value, that is, why the USB power outage can be saved after the reason for the data. This is the reason why USB can save data after a power failure.

The mobile hard drive, as its name suggests, is a storage product that emphasizes portability with a hard drive as the storage medium.

The vast majority of mobile hard drives on the market today are based on standard hard drives, and only a small number of them are based on miniature hard drives (1.8-inch hard drives, etc.), but the price factor dictates that the mainstream mobile hard drives are still based on standard notebook hard drives. Because the use of hard disk for storage medium system, so mobile hard disk in the data read and write mode and standard IDE hard disk is the same. Mobile hard disk more than USB, IEEE1394 and other transmission speed faster interface, can be higher speed and system for data transmission.