随着各行各业的发展和生产的需要，工业的发展和生产的需要。

随着各行各业的发展和生产需要，业界上的采集器已经满足不了某些行业的生产需要，他们不仅需要采集数据还需将数据发生变化的时间记录下来，断电数据不掉失，特别是当电脑读取采集器的数据时还需能继续采集数据，保证不掉失一个数据，并且还要求擦除采集器旧的数据时还能继续采集数据和保存数据，保证不擦除新的数据，因为某些场合需要时时刻刻不间断的采集数据，并要求任何时刻都能读取数据。 -With the development and production of all walks of life needs of the industry on the collector has been unable to meet the needs of certain sectors of production, they require not only data collection will need to change the time data recorded, the data can not lose power, especially is when the computer read the data collector can continue to collect data needed to ensure that a data can not lose, and also requires the collector erase the old data will continue to collect data and save data to ensure that does not erase the new data, because some occasions the need for uninterrupted data collection at all times and request at any time be able to read data.