microcell lights

power instantaneous OE port for a short period of time is in high state, during this period, As soon as possible through the software to 74hc595 all the output low. 2nd: The working process of the two Cascade 74hc595: Each 74hc595 has a 8-bit register and two cascade up to two registers. The St pin is equivalent to a flush signal pin, when the ST pin generates a rising edge signal, the register value is output to the output pin of the 74hc595 and locked up, the DS is the data pin, and SH is the

There is a number 1~100 a light bulb, at first all the lights are extinguished. There are 100 students to press the lamp switch, if the light is bright, then press the switch, the lantern will be extinguished. If the lamp is off, it is lit after pressing the switch. Now start pressing the switch. The 1th classmate, all the light bulb switch is pressed once (by the number of the switch lamp: three-and-three,...... 100).2nd classmate, one lamp at a time

On September 6, August 18, the calculus reading room was officially opened for external use (trial run), and its lights finally lit up. This is a memorable day. Why? Remember, in the fall of 1976, a friend who just returned from the United States brought back a book written by J. Keisler, basic calculus (an infinitely small method ). Zhang jinwen (late), a researcher at the Institute of Computing Science and Technology of the Chinese Emy of sciences,

correspond to gpb5, gpb6, gpb7, and gpb8 */# definegpb5_out (1 I will not talk about the specific principles and hardware analysis here. I have previously written an analysis called "tq2440 key-light LED driver, the difference is that in Linux, LEDs are terminated by keys, while bare metal programs are not interrupted by keys, we only treat the pins connected by the buttons as a general gpio port, and set the level of the LED pins by judging whether the buttons are pressed at Different Pin lev

Implementation of multiple TextView lawn lights in Android self-learning notesTextView:1. Define four attributes of the textView Tag:Android: singleLine = true // make it only have a single rowAndroid: ellipsize = marquee // remove the ellipsisAndroid: focusable = true // loop it Android: focusableInTouchMode = true In this way, a TextVIew achieves the effect of running the horse lamp. However, if you write the second TextView in the same way, the s

In the busiest area of Tokyo, street lights are embedded with NFC tags to provide information and advertising services for passers-. Cyberagent, an online advertising and social gaming company, and Shibuya Television (Silicon Valley TV), a technology dealer, and press Co., Ltd. jointly launched the NFC-based information service, the project name is the Shibuya clickable project, which is located in the Tokyo-based Shigu commercial center. This proje

Copy CodeThe code is as follows: A$arr =array (' a ' = ' = ' abc ', ' B ' =>123, ' C ' =>true);B$arr =range (' A ', ' d ');1for ($i =0; $i echo $arr [$i]. ', ';Echo '';2foreach ($arr as $key)echo "$key,";Echo '';3foreach ($arr as $key = $val)echo "$key-$val,";Echo '';4Reset ($arr);while ($item =each ($arr)) {echo $item [' key ']. ' -'. $item [' value ']. ', ';}Echo '';5Reset ($arr);while (list ($key, $val) =each ($arr)) {echo "$key-$val,";}Echo '';?> Use statement a $arr =array (' a ' =

Test instructions: A row of lights have light and dark, each light has a value;Five types of operations:Q L R SS Seek the GCD of the light in the [L,r] interval in which the state is SS;I I value SS inserts a value after the first light for the value state for the SS Light;D I delete the first light;R I change the state of the first light;M I x change the value of the first light to X;Reference: Http://wenku.baidu.com/link?url=EEwhlUPp2_U05mJEcbskt0_e

direction emitted from infinitely far away. All the models in the three-dimensional space are illuminated by the same direction of light. And the point light is processed. The position of the light source is fixed in three-dimensional space, and the model in three-dimensional space is illuminated by different directions depending on its location.Similar electric light bulbs in the real world.However, the light bulb will actually weaken. The farther away the light is, the weaker the intensity.Th

Color:hex # 9a0016 Choke:20 Size:10 After setting up, click OK 7 Create a new layer. Select Line Tool (U). Now you want to change the settings you made in the first step, select the arrow for the Settings bar, remove the hook in the box before start, go back to the settings bar, and set the weight:3px. Set the foreground to white. Now we're going to draw the light, enlarge the image to make it easier for you to work, and then follow the light to the left and draw a

The ADSL device has a CD or Link indicator. Normally, this indicator will soon remain on after the power is switched on. If there are other exceptions, if the indicator lights keep flashing, it means that there is a fault in the communication line.In this case, you can test whether a signal exists in the telephone line. If the signal is not tested, it indicates that the line may be short or open, at this time, you must ask professional maintenance per

To give a 01 matrix of 5*6, 0 indicates that the light is dark, and 1 indicates that the light is on. Each position in the matrix represents a button. When the button is pressed, the lights around it (up and down) are in the opposite state. Ask how to turn all the lights into a dark one. Solution: This type of switch problem is a classic Gaussian elimination problem. When doing this, I can think of how to c

What is the problem with the sound when the hard drive lights on Windows 7 are always on?Some friends found some strange problems when using the Win7 System: The computer hard drive indicator is always on and accompanied by sound, and the sound is still harsh. What's going on? In fact, this indicates that the hard disk is reading data and reading data repeatedly. To solve this problem, let's take a look at the cause and solution.Cause analysis:The mai

Topic PortalTest instructions: There are n*m rooms, '. ' Indicates can be lit, ' # ' means not to be lit, each lit a room will be lit next to the room, the intention of a special lamp can be selected around the different directions of the room lit. Ask at least how many lights are needed to make all the rooms litAnalysis: The room needs to be lit up to only 15, so consider the pressure, and then the violent enumeration choose which direction to use as

As long as there is a compliance packet arrives, LED lights on XY, this effect how to achieve?I have a lot of ways to compare this: use log target to send kernel log, rsyslogd intercept, redirect to filter, invoke shell operation LED light. It's a lot of fun, but isn't that what UNIX advocates?What is the most direct way? I think it should be to write an event target, as long as the match through the NetLink to the data packet to user space, with this

Title Address: POJ 1222Test instructions: There is a 5*6 matrix, each position represents a button and a light, 1 is light, 0 is off. Whenever you press a position button, it and the status of the lights around it all flipped (how to affect the topic), asked in such a square to press which buttons can turn the whole square into an out, then 1 means press, 0 said did not press.#include Copyright NOTICE: This article for Bo Master original article, wit

Ultraviolet A 11605-lights inside a 3D Grid Question Link Given a 3D nxmxp mesh with a light on each grid, now two points are randomly selected each time. The two points constitute the switch light in the middle of the cube, q: What are the expectations of bright lights in the grid after K Steps? Train of Thought: For the probability problem, separate the X, Y, and Z axes to calculate the number of cases wh

Ultraviolet A 1560-extended lights out Question Link If a matrix is given, 1 indicates that the light is on, 0 indicates that the light is turned off, and no switch is pressed, the four positions around will change. Ask one method to make all the lights dimmed. Two methods:1. Enumeration recurrenceThis is relatively simple. enumerate the first line and then recursive it. If the previous line is on, the next

IOS UI programming-Implementation of neon lights I have been studying UI programming for three or four days. I have learned some basic views and controls over the past few days, such as UIView, UIlabel, and UIButton ., to learn about UI programming, you can see the effect by writing your own code. This is very different from C and OC. So I tried a simple view color transformation application, that is, the neon lig