Q.2 Write a detail note on Evaluation of Operating system.
Solution :-
Evolution of Operating Systems.
Operating systems have evolved significantly over time, adapting to technological advancements and user requirements.
From early manual computing systems to modern multi-user and cloud-based systems, OS development has played a crucial role in enhancing computing efficiency.
1. Early Systems (1940s – 1950s).
In the early days, computers operated without an OS.
Programs were manually loaded using punch cards or switches.
There was no automation, and users had to manage resources manually.
2. Batch Processing Systems (1950s – 1960s).
The introduction of batch processing allowed users to submit jobs, which were executed sequentially.
The OS automated job execution, reducing manual intervention.
Early batch systems lacked real-time interaction, leading to delays.
3. Multiprogramming and Time-Sharing (1960s – 1970s).
Multiprogramming enabled multiple processes to run simultaneously, increasing CPU utilization.
Time-sharing systems allowed multiple users to interact with the computer at the same time.
UNIX, developed in the late 1960s, became a major advancement in OS technology.
4.Personal Computer Operating Systems (1980s – 1990s).
With the rise of personal computers, operating systems like MS-DOS and early versions of Windows emerged.
Graphical User Interfaces (GUIs) made computers more user-friendly.
Networking capabilities improved, leading to the development of distributed systems.
5. Modern Operating Systems (2000s – Present).
Modern OSs, such as Windows, macOS, and Linux, offer advanced multitasking, security, and user experience.
Mobile operating systems like Android and iOS have revolutionized handheld computing.
Cloud-based and virtualized OSs have enabled remote computing and resource sharing.