Answer:(1) To manage the computer's resources, which includes central processing unit, memory, disk drives, and printers, (2) To establish a user interface
(3)To execute and provide services for applications software.
The old mainframe computers have
(1) low memory sizes
(2) slower connectivity speed
(3) Larger sizer
(4) low sophistication.
Explanation: Operating system is a system software that manages the computer resources,helps to establish user interface and it helps to provide services for application softwares.
Operating system software includes WINDOWS X,WINDOWS 7,WINDOWS 8,LINUX,etc.
Mainframe computers are computers used by large multinational companies for processing bulk data. Old mainframe computers were produced by IBM(INTERNATIONAL BUSINESS MACHINE) in the year 1952 they are classed two scientific and commercial mainframe computers with different information although they had some incompatibilities. Old mainframe computers are large in size with low processing speed, sophistication and storage compared to present day system.
- Using cases can be visualized in greater detail in this report of an activity diagram.
- In other words, it's a behavioral diagram that regulates the number of actions via systems. They can also be used to show sequences of activities in business operations.
- UML Activity Diagrams A business process can be examined to determine its flow and demands that use these tools.
The steps to this question can be defined as follows:
For step 1:
- The task is to decide the action steps depending upon your use case.
For step 2: Identify all parties involved
- If you know whoever the actors are, it's easier to determine the acts they are liable for.
For step 3: Establish a movement among activities
- Change the priority in which the action is required by studying the flowchart.
- If you need to add any branches to the graph, note the conditions that must be met for certain processes to take place.
- Furthermore, do you even have to finish some tasks before moving onto someone else?
For step 4: Adding swimlanes
- We know who is to blame for each act. It's time to assign everyone a swimming lane and group every action they are accountable for under it.
- Some many activities and actions make up your sales system or process.
Please find the diagram in the attachment file.
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Assignment submission: brainly.com/question/11714037
D. Rise of NASA.Hope I helped.