This paper presents a comparative analysis of the application of biologically inspired algorithms and methodologies in CAD software packages, for determining the optimal profile values in carriers with two independent variables. As an example of a biologically inspired algorithm to solve this optimization problem, the scroll algorithm was applied, while the SolidWorks software package was used as an example of CAD.

Mobile devices that are today at the global level with the largest usage rates are precisely those devices that are based on the Android OS platform. The work was based on the description of the created project, that is, the android game. Android games are the areas that are most represented in the IT development world, that is, the world of the mobile development application. Here, the focus is on that part of the application software, which is an integral part of the entire android package. The android system itself provides the opportunity as an open platform programming application solutions and install them on a mobile device. Through the work, its content and code in the form of scripts will be explained.

The term steganography is usually associated with hiding and concealing information and messages. People, and even IT professionals, very rarely come into contact with steganography and steganalysis. Only messages are protected by cryptographic protection, while steganography can be said to protect both messages and parties participating in the communication. Steganography also means hiding messages inside computer files and data streams. This paper provides an overview of the implementation of embedded messages using steganography in the PHP software package. Emphasis is placed on hiding information, i.e. messages in JPEG images. As well as decoding or reading a hidden message. The field of steganography is naturally linked to the field of steganalysis, the primary goal of which is the detection of a hidden message, and then its extraction from the object of the message carrier. The most commonly used method for hiding messages is LSB, it is a method that changes the least significant bits to match the secret message. Then, by passing the steganographic key, the message is encrypted using the RC4 algorithm.