艾未未出狱了
Public critic 艾未未出狱了，而且变得沉默寡言。但是还有随时被抓回去的风险,还被加上了许多限制（一年内没有special permission 不能出北京），不解的是。为什么 charge against him 竟然是 economic crime 好像是逃税。以前听说过很多人逃税，那些人可能也不是真的逃税。
艾只有53岁啊，看上去六十多了，而且帮助过鸟巢的建设。
艾只有53岁啊，看上去六十多了，而且帮助过鸟巢的建设。
Embedded System interview Question
1. What are static variables? Static variable in a function only remain one copy of itself. Static variable in a module can be used by any function in the module Static function can only be called in its class 2. What are volatile variables? Volatile variables may change its value unexpectedly in the program. The program will check its value every time, it tries to use it. If a variable is not volatile, the program may keep a copy of the var in its cache. 3. What do you mean by const keyword ? A constant variable is a read only variable. You cant change its value else where except initialization. 4. What is interrupt latency? Interrupt latency is the time between the generation of interrupt and the time for interrupt handler to process it. 5. How you can optimize it? We may use polling and message passing for interrupt to handle interrupt immediately. 6. What is size of character, integer, integer pointer, character pointer? The size of character is 1 byte, inte
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