Packet Watch

You can start programming in Java today. It's simple, free and there is an abundance of resources. The language has been around for decades and is used by many companies. Because it is so widely used, Java programmers have many job opportunities. There is a very large and active support community on the internet. Computers use a language of 1s and 0s called assembly language. This is not human-readable code and would be extremely difficult and time-consuming to write code for.   There are many Object Oriented Language programming languages that are much easier for a human to understand that will create the computer code for you.   Object Oriented might sound confusing at first, but it simply means that you are programming with items (objects) that have certain known properties called states and behaviors. A state would describe the item, such as name, size, and color, and the behavior is what it can do, such as move, be filled, emptied, and tip over. An everyday object with th...

Features and structure of contemporary operating systems The fundamental concepts that underlie operating systems are process and resource management, memory management, file management, and I/O management. The operating system provides a setting for applications to control the hardware on which it’s installed. The operating system will have some variation of a user interface to interact with the system. The interface may be a batch system, command line, or graphical user interface. The user interface does not directly control the hardware or system services. The user interface will use pre-defined ‘system calls’ to interact with the system services only in specific allowed methods. The system calls will relay the messages to the system services. Threads and process synchronization Operating systems use inter-process communications to share and exchange information, such as shared memory and message passing. Shared memory is a method that allows multiple processes to access the same ...