Archiv für den Monat June 2011

Von Tom am 27. June 2011

Few Things About Microcontroller

The microcontroller is a special type of microprocessor and incorporates components of the microprocessor in a single chip to build a single chip, which contains the heart of the processor, input / output devices and microcontrollers need to collect input data. The microcontroller can be classified into three types of 8-bit, 16 bit and 32-bit microcontroller.

The 8-bit microcontroller consists of internal buses and ALU. The ALU is an arithmetic logic unit. Performs arithmetic operations such as addition, subtraction and logical operations such as AND, OR gate operations. The microcontroller will typically contain the number of various general purpose input / outputs. Therefore, when the general purpose I / O pins are called to an input state, is used to read the sensors and when configured for output stage. The pins can drive the LED devices. Microcontroller architectures have some models include general purpose processor with the number more RAM, ROM or functions of I / O

Interrupts:

Interrupt used in the microcontroller is used to wake the device in a low power consumption and interrupt sources are device dependent.

Programming:

In general, many of the microcontrollers are programmed only in assembly language, but now another high-level programming languages ​​can also be used to program the microcontroller. Thus, programs should be agreed by the microcontroller available on the chip program memory and the memory can be read-only memory or a flash memory read-only. The microcontroller converts the high level and assembly code to machine language, assemblers and compilers are used.

Von Tom am 21. June 2011

Security Authentication

Security authentication means to verify the identity of a user connecting to a network. Passwords, digital certificates, smart cards and biometrics can be used to test the user’s identity to the network. Security authentication is to verify the integrity of messages, e-mail authentication and MAC (Message Authentication Code), verification of the integrity of a transmitted message. There are human authentication, challenge-response authentication, password, digital signature, IP spoofing and biometrics.

Authentication of man is the finding that the person who initiated the transaction, not the equipment. Challenge-response authentication is an authentication method used to prove the identity of a user who connects to the network. When a user logs on, the access server (NAS), the wireless access point or authentication server generates a challenge, usually a random number is sent to the customer. The client software uses the password to encrypt the challenge with a cipher or hash function and returns the result via the network. This is the answer.

Two-factor authentication requires two independent ways to establish identity and privileges. The method, which uses more than one factor of authentication is also called strong authentication. This contrasts with traditional password authentication, you need only one factor to be able to access the system. The password is a word or a secret code used to serve as a safety measure to prevent unauthorized access to data. It is usually handled by the operating system or DBMS. However, the computer can only verify the legality of the password, not the legality of users.

Von Tom am 19. June 2011

An Intense Career Path

Today was the first day of my new and extremely intense career path. After months of preparation I began my first Microsoft training courses. I don’t even want to think about the costs right now, because when I’m done I will be able to make a lot of money. I also plan on helping out my family because they have done so much for me. They mean the world to me and there is nothing that I wouldn’t do for them. But these classes are really difficult, so I will have to focus on them a great deal. This means I may have to miss some family outings, but that is the price I’m going to have to pay.

I can already tell that my Microsoft training is going grueling. I already have a great deal of studying to do. Luckily for me I can study while I’m at work. I got a job as a night manager at this local club. But the place practically runs itself and all I have to do is collect the money at the end of the night and lock the place up. The owner just wants someone there to keep up appearances, which is really easy to do.

Von Tom am 16. June 2011

BlackBerry Storm, A Smart Phone

BlackBerry Storm is very compact since it measures only 4.4 inches tall and only 2.4 cm thick. It has a sleek black and weighs about 5 ounces Phone polished appearance makes it perfect for businessmen and professionals.

Show

Besides the touch screen function added, the BlackBerry Storm is also proud of its high resolution. LCD screen measures 3.25 inches diagonally and is 480 by 360 color pixels. This provides the device with the brilliance of color and sharpness of images. The decision may also be adjusted with the function of dynamic control equipment brightness to change the display settings of the user. The display orientation can be changed from portrait to landscape mode for optimal comfort.

Accessibility

Since accessibility is very important when it comes to cell phones, RIM has ensured that the BlackBerry Storm is very competitive here. The phone has built in Wi-Fi ready, in order to access the Internet easily. The phone also features Bluetooth for easy file transfer.

Security

The smartphone is equipped with a security configuration to protect files from being hacked. Since many users are used to unlocked phones, most cases end up being deleted. But with the BlackBerry Storm, the user can prevent unauthorized access by locking the screen and has a password.

Added Features

Some more features with the phone is a media player for music and video, audio input and output for headphones, microphones and speakers. It also has a 3.2 megapixel camera with 2x zoom and autofocus. It also has a built-in flash image stabilizer.

Von Tom am 11. June 2011

ASP Dot Net Over Java Programming Advantages

Java can be used to write programs for different operating systems, and ASP.Net can be used for any programming language in a Windows program. All this is based on the original design intent of the programming language, and has advantages and disadvantages over the other. Both are the language of object-oriented programming otherwise, with obvious differences in syntax.

It is also important for us to know the benefits of ASP.Net programming in Java. One advantage is that they stick with one language, multi-lingual solution is easier to provide a Java platform – it can, for example, use.net libraries that were written in a language other than it uses. From my point of view, is a theoretical advantage. It may also be true advantage, but you need someone who has extensive experience using.net to say with certainty.

Another advantage is that it has the Visual Studio. Java main advantage is that you have the choice of third-party tools. Today, traditional business have emerged fully eCommerce business have great utility in the business sector. e-commerce solution for online auctions, online stores, classified ads, offers E, meetings, job boards, social networks and entertainment sites are created with the help of this program.

It is mainly used for web design in Java is used to design applications thick client desktop applications and poison. It is independent of language. You can go to think that Java is “language independent” in the same way that ASP.Net is – but the only difference is that it is not marketed as such, ie it is no technical limitation that prevents this from happening.