Gerard M.B. Pean
Your OS or operating system is the glue that binds hardware and software. Without the operating system your smartphones, PC’s, ultrabooks, laptops, tablets and countless other devices would completely useless. “Your computer can have an expensive motherboard, the fastest processor, lots of memory, and superior graphics, but it is completely useless without an operating system (OS). Every computer must have one. What is the operating system? You can look at it as being the “middle man”. Application software such as a spreadsheet cannot communicate directly with hardware. Whether pressing a key on your keyboard or clicking your mouse, it’s the computer operating system that provides the interface between software and hardware. It handles all of the computer’s resources and has the ability to support devices from many different vendors via device drivers. All these tasks are quietly working behind the scenes without the user’s knowledge”.
Keeping it simple, ” There are four types of computer operating systems: A Real Time OS is for industry and machines. There’s basically no user involvement. A single-user single task operating system is for one person to do one thing at a time. A single-user multitask OS allows one person to run more than one application on a computer simultaneously. A multi-user operating system permits multiple users to access a single computer”.
The three main operating systems being used today are Windows, Mac, and Linux. Within all operating systems you’ll find the kernel. The kernel is the core from which all hardware can be accessed. It’s “the part that does the invisible work such as allowing user applications access to hardware, managing resources like the memory and CPU, scheduling tasks, and storing device drivers. It is usually the first part of the OS that is loaded after you turn on your computer and it completes the POST (Power On Self Test). If a problem occurs at any point when the OS is loading, usually an error message appears on the screen”. Want to know more? send in your comments!