Whether it is a buzzer or LED digital tube display, in fact, the two for code writing is not much different, are gpio a typical application. Red Bull Development Board has a buzzer, and EM-STM3210E has a four-bit led digital tube, the code is relatively simple, not worth the two write a separate blog, so the two in one article to explain, but two sample code is independent.
First, the buzzer, check the sch
Ultrasonic principle of simple ranging accurate, the application of a wide range of the following a self-written digital tube program, display part of the need to change, the recent contest written I use the Hui Development Board, a common yin digital tube
Ultrasonic Module Program//Author: Z H//time 2015/11/29//trig = p2^0//echo = p3^2 #include
is implemented in the process.2. Threads(1) thread two basic propertiesAn independent unit that can have resources, a basic unit that can be independently dispatched and assigned;(2) thread-to-process relationshipThreads act as the basic unit of dispatch and allocation, and processes act as units for allocating resources independently.A thread is an entity in a process.Threads have only a few resources to run: program counters, a set of registers, stacks.Threads can share all the resources owne
Author: knife
Affected Versions: 2.4.4Official Address: www.discuz.net
Vulnerability Type: SQL Injection
Plug-in: video tube less than 1.85 (only 1.85 tested)
Vulnerability file: reportvideopopup. php
Vid variable Filtering does not strictly produce SQL Injection
If (isset ($ _ GET [vid]) $ vid = $ _ GET [vid]; // you know
If (isset ($ _ POST [postreport]) $ op = postreport; if (isset ($ _ POST [reportclose]) $ op = reportclose; if (isset (
); } else { //Probably Initialize members with default values for a new instance } //...}public void Onrestoreinstancestate (Bundle savedinstancestate) { //All call the superclass so it can restore the VI EW hierarchy super.onrestoreinstancestate (savedinstancestate); Restore State members from saved instance Mcurrentscore = Savedinstancestate.getint (state_score); Mcurrentlevel = Savedinstancestate.getint (state_level);}Destroy Activityondestroy () is the last
Town Field Poem:Cheng listens to the Tathagata language, the world name and benefit of Dayton. Be willing to do the Tibetan apostles, the broad show is by Sanfu mention.I would like to do what I learned, to achieve a conscience blog. May all the Yimeimei, reproduce the wisdom of the body.——————————————————————————————————————————CodeDef Test (): var=5 Print (Var) #局部变量var =10print (Var) #全局变量Test () print (VAR) #全局变量 # Because global variables and local variables are stored in two di
shortest time to find the best things. So have to say, Google Dafa good, haha haha (thank laod.cn really is FQ artifact, when a tap water ~). I think so for my own choice:1. More money ... Yes, it's more money, it's so superficial.2. Technical barriers are high, but the alternative is not high.3. The importance of working hours is less frightening, and the slow technology can actually lead to a more robust and rapid advance, with very clear guidelines for future career planning.4. The more you
Digital display 00~59 Button 1 each time you press the display value plus one, button 2 each press the display value minus one, button 3 function zero, button 4 start or stop timer 0#include #define UCHAR unsigned char#define UINT unsigned intSbit key1=p3^4;Sbit key2=p3^5;Sbit key3=p3^6;Sbit key4=p3^7;Sbit dula=p2^6;Sbit wela=p2^7;Uchar Code table[]={0X3F,0X06,0X5B,0X4F,0X66,0X6D,0X7D,0X07,0X7F,0X6F,0X77,0X7C,0x39,0x5e,0x79,0x71};void delayms (UINT);Uchar Numt0,num;void display (Uchar Numdis){Uc
users to use the computer to provide a good operating environment of a system software.2, the role of the operating system(1) Improve the efficiency of computer system through resource management;(2) To improve the human-machine interface, to provide users with a friendly working environment;3, the operating system featuresConcurrency: Two or more two running programs are executed simultaneously within the same interval.Sharing: Refers to the resources in the operating system can be used by mul
character device array(4) Create a struct class using the Class_create macro(5) Create a device file using the Device_create function2. Uninstalling the LED-driven device filesCall three methods in turn:Void Device_destroy (struct class *class,dev_t devt)Void Class_destroy (struct class *cls)Void unregister_chrdev_region (dev_t from,unsigned count)3. Setting the register and initializing the LED driver4. Control LED(1) control led via string(2) control led via I/o commandModule parameters for 5
1. Master the basic working circuit of ZigBee Wireless module.2, the above chip with the emulator connection needs 5 wires, power, ground, reset, P2_1, p2_2.Output configuration: A, the first to make the corresponding IO port in the normal IO port mode, non-on-chip peripheral mode, B, so that the normal IO port in the output state, non-input state, C, directly to the corresponding IO port assignment, the corresponding value is output.The input or output status of all IO ports is determined by P0
smaller, generally 100 ω to dozens of ω between. This indicates that the FET has been triggered to pass. At this time, the black table pen to the S pole, the red table pen to the D-pole, you will find that there is a numerical display. This shows that the FET is intact. If the results are inconsistent with the above two methods, then the FET is bad. In general, D-pole and S-pole breakdown are more common. Using the "diode" of the digital multimeter, you will hear the sound of the buzzer. The ab
Recently I plan to build a hardware touchpad control system, so I started to learn hardware.
A week of downtime, come on!AT89S52
1/* = ======================================2 Project name: digital tube running light3 OPERATOR: Rain4 creation date: 2011-10-305. Change description:6 program description:7 (1) CPU model: AT89S528 (2) clock frequency: 129 (3) implementation functions:10 (4) Program Overview:11 =============================================
the code is wrong (school facilities are wrong). Then this thread is bound to fall into chaos. 4, for physical education this process. Threads (physical activity) are unknown, and only when the school is allocated at the beginning of the semester can you determine who will take the first course. EnhancementA pipe defines a data structure and a set of operations that can be run for a concurrent process. This set of operations can synchronize processes and change the data in the pipe process d
teacher) to control, once the code is wrong (school facilities are wrong), then this thread will fall into chaos. 4, for physical education This process, the thread (sports activities) is unknown, only in the school when the allocation of a good time to determine who first to carry out what course. EnhancementThe process defines a data structure and a set of operations that can be performed for concurrent processes, which can synchronize processes and change the data threads in a pipe to de
chain today? What is the high quality of the chain? Just look at the so-called outside the chain of the real role! We first answer a question: what is the outside chain to do, why to give a page to do outside the chain? Look at Google and Baidu's optimization guide said outside the chain is equivalent to the page of a vote, the more the chain more votes, the higher the weight, this is true! But in essence we do outside the chain mainly to let more people understand us, from more ways to know us
Believe that Windows crashes, system crashes we have seen a lot of. A quick way to recover a system is to use the Ghost program, but every time you use ghost you have to choose, it's too much trouble. In fact, Ghsot has a lot of parameters, cleverly
. Basic format for Ghost batch files
Ghost-clone,mode={copy│load│dump},src={drive│file│drive:partition},dst={dri-ve│file│drive:partition}/fro/fx/rb /f32/z (n)/sure{other parameters}
The meaning and usage of the main parameters are as
There is a problem with the computer, but do not want to reload the system again and again, what can be done? Ghost's emergence has solved these thorny problems for us. Ghost is an abbreviation for general hardware oriented Software transfer,
First, the need for version management
If the software crisis of the 70 's led to the birth of the idea and the development of the theory system, the rapid development of the software industry in the 80-90 years, especially in the 90, led to the
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