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  Architecture of the Bluetooth protocol stack   Underlying hardware module   RF 1. Use 2400m ~ 2483.5m band 2. Data is transmitted in FM mode, with a total of 79/EDR and 40/ble hops per second. 3. gfsk (dqpsk and 8 DPSK) modulation 4. channel

Why is lihao102 called Xiaojie?The East End of Dongzhimen overpass in the second ring road, and the east end of the East Street in the intersection. On this 1442-meter-long dongnei Street, there are more than 150 commercial stores along the street,

Why is job-hopping the most productive force?   Recently, as the interview workload increases, it is not difficult for me to view my resume and interview processes, it also prompted me to further think about the value of "job-hopping? How can each

There is such a couple. the girl is very beautiful and considerate. Sometimes she has some bad ideas to play with boys. boys are very smart and sensible, the most important thing. A strong sense of humor. you can always find a way to make girls

When many pages need to be displayed, many of us use paging. Sometimes, the paging effect is very annoying. Scroll bars are a simple and efficient method. Here, considering the user experience, I use jquery to achieve a effect similar to "rolling

Windows kernel objects: The Windows kernel can process any event in an orderly manner, and how to arrange and run the internal mechanism (including the event mechanism, mutex lock mechanism, semaphore mechanism, and wait mechanism ). An example of

Display GIF images in basic Android 23:20:17 As we all know, if we use imageview in Android to directly display GIF images, the images will only be parked on the first frame and will not continue. In this case, only a static image is displayed,

"Buffers" represent how much portion of Ram is dedicated to cache disk block. "Cached" is similar like "buffers", only this time it caches pages from File Reading. BuffersAre associated with a specific block device, and cover caching of filesystem

It is tricky for many developers who are new to winforms programming, that is, how to keep their forms synchronized when users adjust various controls and make them commensurate with the parent form. This can be a very frustrating situation,

Sheep door problemSheep Door Problem Description: There are 3 closed doors, one door behind the car, the other two doors are goats, the host knows what is behind each door. Contestants first choose a door. Before opening it, the host opens a door

1. Angry Birds (fill in the blanks)Planet X Angry Birds like to hit the train!A straight track, 1000 meters between the two trains.The two trains (which may be called A and b) travel at 10 m/s per hour.Angry Birds from a car, speed 50 m/s, crashed

http://blog.csdn.net/pipisorry/article/details/36688019Problem:The Sigma Building, where Microsoft Research is located in Asia, has 6 elevators together.At rush hour, everyone on each floor is up and down. The elevator stops on every floor. Interns

Description of the process and creation of the processOne, Process descriptor task_structTo manage the process, the kernel must have a clear description of each process, and the process descriptor provides the process information that the kernel

A Review last week's contentLast week I learned about the process of system calls in Linux, which is the approximate process of system invocation:A Some basic concepts about process schedulingfork (): a process is a program of execution and a

1 function and usage of the tar commandTar can create archives for Linux files and directories, and with tar you can create backup files for a specific file (backup file). You can also add files or change files in the file.Tar first to understand

It is said that the high master in the writing of multi-thread routines are difficult to ensure that no deadlock, deadlock debugging has become a more common problem, assume that there is a problem:A process that is running in production is

Recently want to study in detail the elevator scheduling algorithm, but the content involved too much, there is no time. About the types of elevator algorithms:Http://www.cnblogs.com/jianyungsun/archive/2011/03/16/1986439.htmlThen I can only look at

Jstack the thread state in the Dump log fileIn the dump file, the interesting thread states are: Deadlock,Deadlock (focus on) In execution,Runnable Waiting for resources,waiting on condition (focus) Waiting to get the

Today, let's look at how to drag and drop an object without pulling out a div and dragging the adsorption function.The last time we dragged our drag is not to drag out the scope of the visual area, on this basis we add a parent div, do not let him

For elevator requirements: elevator on the first floor, waiting for users to stop after the floor, stop in one of the floor and then everyone down on foot to find their own target, so that the last of all the minimum number of stairs to climb.Set