วันอังคารที่ 9 กรกฎาคม พ.ศ. 2556

GoogleDC

Google has provided us with a rare opportunity to see their data centers around the world, thanks to which every day we can use the services of this global Internet company. This is a real maze of servers that handle online queries into a search engine, show us a video on YouTube, and deliver emails to millions of people. Hundreds of thousands of servers, colorful cables and even bicycles to move the employees of the centers - in this collection you will find and data centers in the former paper mill in Finland, and specially designed server centers in Iowa, USA.

Inside the internet 1 Дата центры Google

1. Few people have seen data centers Google, and for good reason, because the most important - is the security of our data. Therefore, each center is carefully protected.

Inside the internet 2 Дата центры Google
2. Despite the large number of Google employees around the world, only a handful of insiders has access to the servers.

Inside the internet 3 Дата центры Google
3. Now you can see the first images which capture the people, places and equipment, through which runs Google.



Inside the internet 4 Дата центры Google
4. In this post photos provided eight data centers in the U.S., Finland and Belgium.



Inside the internet 5 Дата центры Google
5. Now Google is also building data centers in Hong Kong, Taiwan, Singapore and Chile.
Inside the internet 6 Дата центры Google
6. Surprise! Hmm, so this is what the guards in the data centers Google.
Inside the internet 7 Дата центры Google
7.Takzhe to share Google's 'Street View' you can take a virtual tour of the data center in North Carolina.


Inside the internet 8 Дата центры Google
8. One of the many server data center in Iowa, USA, where the routes and switches allow data centers to communicate with each other. Fiber-optic cable connecting the server mounted on the ceiling.
Inside the internet 9 Дата центры Google
9. Even the lines in the centers painted in company colors Google. For these colorful water pipes travels around the center in Oregon. Blue pipes supply cold water, red - hot water is returned to a special chamber that it has cooled down.
Inside the internet 10 Дата центры Google
10. In Hamina, Finland, Google has decided to restore the old paper mill and stay on its territory, not far from the cool waters of the Gulf of Finland.
Inside the internet 11 Дата центры Google
11. Google server center in Douglas, Iowa.  


Inside the internet 12 Дата центры Google
12. This server facility in The Dalles, Oregon, USA.


Inside the internet 13 Дата центры Google
13. Dennis Harwood, an engineer Google, diagnoses overheated processor. For more than 10 years, Google has built some of the world's most powerful servers.
Inside the internet 14 Дата центры Google
14. Google data center in Council Bluffs, Iowa, USA.

Inside the internet 15 Дата центры Google
15. Each server has four interfaces, marked by lines of different colors. The colors in all centers of Google standard that facilitates the work during equipment maintenance.

FacebookDC

At the edge of the Arctic Circle in Lulea (Sweden) is the newest data center Facebook. The Center handles data about users of social networks around the world.

BIGPIC26 Центр обработки данных Facebook возле Полярного круга



FBDataCenter01 Центр обработки данных Facebook возле Полярного круга
1. Data center in Lulea became the first data center outside of the U.S..

FBDataCenter02 Центр обработки данных Facebook возле Полярного круга
2.
FBDataCenter03 Центр обработки данных Facebook возле Полярного круга
3. Facebook Guide believe that Lulea is likely to be one of the most efficient and sustainable data centers in the world.

FBDataCenter04 Центр обработки данных Facebook возле Полярного круга
4.
FBDataCenter05 Центр обработки данных Facebook возле Полярного круга
5. All the equipment in the center provides electricity to the local hydroelectric power plant that runs on renewable energy, thus reducing the number of backup generators for more than 70%.
FBDataCenter06 Центр обработки данных Facebook возле Полярного круга
6.
FBDataCenter07 Центр обработки данных Facebook возле Полярного круга
7. In addition to the energy of the water, the center is also used by the northern cold air to cool the servers that store photos, videos, comments and "likes." Any excess heat is used to maintain a comfortable temperature in offices. 

FBDataCenter08 Центр обработки данных Facebook возле Полярного круга
8.
FBDataCenter09 Центр обработки данных Facebook возле Полярного круга
9. Almost all of the technology at the center, from servers to power distribution systems, based on the work of Open Compute Project - community of engineers from around the world, which is engaged in designing storage centers.
FBDataCenter10 Центр обработки данных Facebook возле Полярного круга
10.
FBDataCenter11 Центр обработки данных Facebook возле Полярного круга
11. 


FBDataCenter12 Центр обработки данных Facebook возле Полярного круга
12.
FBDataCenter13 Центр обработки данных Facebook возле Полярного круга
13. 


FBDataCenter14 Центр обработки данных Facebook возле Полярного круга
14.
FBDataCenter15 Центр обработки данных Facebook возле Полярного круга
15. During the first week of work, the coefficient of efficiency of energy consumption in the new center Facebook was 1.07.
FBDataCenter16 Центр обработки данных Facebook возле Полярного круга
16.
FBDataCenter17 Центр обработки данных Facebook возле Полярного круга
17.
FBDataCenter18 Центр обработки данных Facebook возле Полярного круга
18. The inscription on the wall of the center: "What would you do if you have nothing to be afraid of?"
FBDataCenter19 Центр обработки данных Facebook возле Полярного круга
19.
FBDataCenter20 Центр обработки данных Facebook возле Полярного круга
20. Center Manager - Joel Kelgren. 

วันอาทิตย์ที่ 7 กรกฎาคม พ.ศ. 2556

Links's Blogger

Links's Blogger


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What is Visual Basic?

What is Visual Basic?

Visual Basic is a tool that allows us to develop Windows (Graphic User Interface - GUI) applications.  The applications have a familiar appearance to the user.


 Visual Basic is event-driven, meaning code remains idle until it is called upon to respond to some event (e.g. mouse clicking, button pressing, menu selection, ...).  Nothing happens until an event is detected.  Once an event is detected, the code corresponding to that event (event procedure) is executed.  


 How to program with Visual Basic?


There are three primary steps involved in building a Visual Basic application:

1.    Draw the user interface  
2.    Assign properties to controls  
3.    Attach code to controls 


Stop Watch Application

1 At the "Start-up Menu" of our Windows Desktop, let's find where "Microsoft Visual Studio 6.0" is, and click on it. Then we can see some shortcuts to the applications of the software suite, and "Microsoft Visual Basic6.0" is one of them and it is also our "target software" right now, let's select it.

At the "Start-up Menu of Windows", Find where the "Microsoft Visual Basic 6.0" is.






2 We now at the main screen of Visual Basic 6.0 with its "New Project" window. Let's click on the "New" tab and select "Standard EXE" icon.
 
Select the "Standard EXE" icon  ให้นักเรียนเลือกสัญรูป Standard EXE

3 Before we go on, let's consider the components of the toolbar of Visual Basic 6.0.  Properties window, Run and Save project are what we have to focus on now.


Design View of Visual Basic 6.0   มุม

4 Controls are the genius tools that can be attached by any codes that can control any events such as clicking mouse or pressing key. Now the "Command Button" and the "Label" are the controls that we are going to use.


Controls of Visual Basic 6.0   คอนโทรลต่างๆ ของวิชวลเบสิก 6.0

5 Visual Basic programming begins with a form which has been named "Form1" by default. Visual Basic form simulates itself as platform which can receive many kinds of objects that created by the controls. Any object has its properties that has been shown in the properties window.


Form and Controls are variety kinds of object of Visual Basic that have their own properties.
Form และ Controls เป็นอ็อบเจ็กต์(วัตถุ) ที่หลากหลายของ Visual Basic ที่มี properties ของตนเอง
6 Here we go on creating a design job like the following picture.  
    -  Using the "Command Button" control to draw the three sequence command buttons, Command1, Command2 and Command3. 
   -  Using the "Label" control to draw the six sequence labels, Label1,
Label2, Label3, Label4, Label5 and Label6 

Form1 would have three command buttons and six labels now.
Form 1 ที่เราออกแบบนี้ก็จะมีปุ่มคำสั่ง (command button) 3 ปุ่ม  และมีฉลาก (label) รวม 6 ฉลาก  


7 Click on "Form1", we can see its properties, rename it with "frmStopWatch" (frm is a pefix which comes from "form"). And change its caption to "Stop Watch Application".


Form1 Properties Configurations


8 Click on "Command1", yes we are about to specify the properties of this object. Rename it with "cmdStart" (cmd is a prefix which comes from "command button") and also refill its caption with "&Start Timing" (& is a prefix of the key letter that a user can press on this key together with the "alt" key instead of click on this command button). 


Change the properties of the command button :  name and caption

9 Do it the same way as the previous step.
Change the properties of the command button :  name and caption


10 Do it the same way as the previous step.

Change the properties of the command button :  name and caption


11  Change only the captions of Label1, Label2 and Label3 according to the following picture.

Change the properties of the three labels :   captions  เปลี่ยนแค่แค็ปชันของสามเลเบิลแรก

12  Change the properties of the other last three labels, "Label4", "Label5" and "Label6" by renaming them to "lblStart", "lblEnd" and "lblElapsed" and erase their captions until they are blank.


Change the properties of Label4, Label5 and Label6 according to the picture. 
เปลี่ยนชื่อของสามเลเบิลท้าย  และเคลียร์แค็ปชันให้ว่าง (blank)
13  Now we have just already designed and configured all of related objects, the next step of us is coding our program. Let's click on the menu-bar at the "View" command tab, then select the "Code" sub-command, the view-code window will show up. Yes, we are going to enter our source codes of our application here.

Click on the "View" command at the menu bar, then select "Code" subcommand

14  The first set of source codes is about the declarations. There will be the "(General)" at the left-top of the view-code window and the "(Declarations)" at the right-top. We have to type four lines of our following source codes.
        1st Line is about the General Declaration  เป็นคำประกาศทั่วไป
        2nd Line is the Declaration of variable "StartTime"  ประกาศตัวแปรเพื่อรับค่าเวลาเริ่มต้น
        3rd Line is
the Declaration of variable "EndTime" ประกาศตัวแปรเพื่อรับค่าเวลาที่หยุด
        4th Line is the Declaration of variable "ElapsedTime"
ประกาศตัวแปรเพื่อรับค่าเวลาที่ใช้ไป
15  This step is about attaching our source code to a control object. The "cmdStart" is a command button we are going to attach the source code. Let's double click on this command button, yes, this action could bring us to a module or subprogram that could be driven by an event, _click ( ), that means this subprogram could work when this command button was clicked on.

 What is about this source code?  It begins with assigning the recent time value (Now) to the variable "StartTime".  Then the method "Caption" stipulates that the label "lblStart" can show up data from the variable "startTime" with the "hh:mm:ss:" format.

 
Attach code to the command button "cmdStart"

16  This step is similar to the previous but it turns to the "cmdEnd" command button. But it creates the expression which assigns the variable "ElapsedTime" with the difference of the variable "EndTine" and the variable "StartTine".

Attach code to the command button "cmdEnd"

17  This is the end of application with the only amazing word "End"
Attach code to the command button "cmdExit"


18  Congratulation to our tough project!. This is the output of our input and process. Yes, it is the "Stop Watch Application" of us.  


Our Graphic User Interface Application :  "Stop Watch"
19  We have to make our project to an independent application.  Click on the "File" command at the menubar then select the "Make..to..EXE" subcommand.