Question 1 : List down all the operating system used in a desktop/laptop today and find good descriptions of how operating system works? Hence, state their advantages and disadvantages.
These are some of the operating system used in desktops/laptops :
- Microsoft Windows
- Advantages
- easy to use
- Many selection of software available
- Compatible with (supports) new hardware
- Compatible with MS driven websites
- Disadvantages
- high resource requirements
- low security protection
- has closed source
- additional expenses
- has to deal with many license agreements
- Mac OS
- Advantages
- highly protected from viruses
- high performance at high speed
- user-friendly
- Disadvantages
- expensive
- less hardware choices
- less compatibility with softwares
- UNIX
- Advantages
- efficient virtual memory
- can multitask with protected memory
- available on wide variety of machines
- Disadvantages
- not user-friendly
- commands has to be detail
- user has to understand main features to use UNIX
- Linux
- Advantages
- Easy to install
- System rarely crash (stable)
- Less vulnerable to computer malware
- Disadvantages
- most Windows program cannot run in Linux
- smaller selection of peripheral hardware drivers
- less user-friendly (especially to newbies)
An operating system works in the middle of software and hardware. The instruction or command given by a user through a software is passed to the operating system. The operating system allocates memory from the RAM and gives that instruction to the CPU for executing it. In a computer, programs are divided into high, medium and low priority. The instructions are executed according to these priorities. In example, in Microsoft Windows operating system, Task Manager is given a high priority and that is why it opens even when explorer is crashed.
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