This repository is a project I did with my groupmates for our course Operating Systems (ICS26012). The system is designed to be a simulation of a calculator for different CPU Scheduling and Disk Scheduling algorithms. For CPU Scheduling, we implemented two preemptive algorithms, namely:

• Shortest Job First (SJF)
• Priority (P-Prio) and two non-preemptive algorithms, namely:
• First Come First Serve (FCFS)
• Shortest Job First (SJF) For Disk Scheduling, four algorithms were implemented:
• First Come First Serve (FCFS)
• Shortest Seek Time First (SSTF)
• SCAN
• LOOK

• The algorithms were distrubted evenly among the groupmates and I was responsible for implementing the SCAN and LOOK Disk scheduling algorithms. I was also responsible for compiling and organizing printing the outputs in order to make the project cohesive.

The project was implemented using the java programming language and coded through the Netbeans 8.2 IDE.

• The program first asks the user which type of scheduling algorithm should the user try. If the user chose CPU scheduling, then they are prompted whether they want to choose preemptive or non-preemptive algorithms.

• After choosing, the users will then be prompted regarding the CPU scheduling algorithm that they will use.

• If the user chose Disk Scheduling, they will immediately be prompted regarding the Disk scheduling algorithm that they will use.

• CPU Scheduling - Priority (Preemptive)

• CPU Scheduling - Shortest Job First (Non-preemptive)

• Disk Scheduling - Scan (left-first)

• Disk Scheduling - Shortest Seek Time First