There are also security issues with documents, especially for Office documents, where Office provides more complete security and document protection features, including security levels, digital signatures, password settings, form protection, and annotation passwords, to make your documents more secure.
The security level of the document
The biggest security risk for Word documents is the macro virus, whic
hopefully are useful for understanding the DMA module:1.DMA transfer data from one address space to another address space, which is implemented by the DMA controller, does not rely on the CPU of a large number of data collection and transmission, saving CPU resources.2.DMA work consists of four processesDMA Request-〉DMA Response-〉DMA transfer-〉DMA endThere are three ways to transfer the 3.DMA(1) Stop the CPU to visit the memory;When the peripheral device has a batch of data to be transmitted, t
Recently, techsun (tianzheng Computer Service Co., Ltd.) and cool mobile digital (Shenzhen cool mobile digital Co., Ltd.) signed a micro soft CRM implementation service cooperation agreement.
Cov digital is Apple's largest authorized distributor in China. It has more than 100 authorized Apple stores in 28 cities and is the leader in the domestic trendy 3C produc
Recently in writing a J2ME program which includes a digital input textfield on the phone to implement (S40 Simulator) The number of input is very cumbersome, so want to avoid this problem and then switch to low-level interface implementation:
Private StringBuffer sb=new stringbuffer ();//define a stringbuffer to hold the input number private int len=4;//The length of the number you want to enter Priv
This question requires a digital encryption method. First, fix an encryption using a positive integer A. For any positive integer B, perform the following operations on each digit and the number at the corresponding position of A: For odd digits, after the numbers of the corresponding bits are added, the remainder of 13 is obtained. Here, j Represents 10, Q represents 11, and K represents 12. The dual digit is subtracted from the number of A by the nu
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