Pinhole cameras were one of the most sophisticated devices of the period, it made tasks much easier it basically worked exactly like the human eye and is something just like tracing.
The operating system is what allows the user to interact with the computer's hardware. It has basic services such as accepting commands from the user, managing, loading, and executing programs, and managing hardware resources. Some examples of operating systems are Windows, Linux, Mac OSX, and IOS.
Application software are pieces of software that perform specific tasks such as word processors.
Answer:
The answer to this question is given below in this explanation section.
Explanation:
"Why the computer is called diligent
Versatile machine"
Computer is called versatile machine because it is used in almost all the fields for various purposes.Because it can perform the task repeatedly without loosing its speed and accuracy for a long time.They are versatile because they can be used for all sorts of task.They can also do many of the same tasks in different ways.Computer is the electronic device which perform the logical and mathematical calculation.Computer is known as the versatile machine because it is very fast in every field and its part of life without it was cannot imagine life.
It can do the work faster and in every field the computer is used for making their work faster.
It can perform the work fast so it is called versatile machine.
Advantages of versatile machine:
- Computer are very fast due to which thousand of job can be performed within the short period of time.
- Complex mathematical problems and logical operations can be solved by using this computer.
- As computer is versatile device,multiple task like communication,graphics,documentation can be done.
Disadvantages of versatile machine:
- Computers are machine hence they have no brain so they work according to the program instruction set inside it.
- It is an electronic deice and it uses electronic sources to work,So it is very risk to store data and information on the computer independently because some electric and electronic damages may damage the data.So we have to make regular backup of the data.
Answer:
Offer several prices and qualities.
Explanation:
When there is uncertainty of the product quality, buyers should not anticipate that the temporary warehouse seller of unbranded computer equipment will deliver high quality because they will actually offer several prices and qualities.
In the essence, buyers will need to consider the value they are getting for a price they pay. There will be huge variety so the more price an equipment has, the more likely it has the chance that it's one of the best quality and vice versa also holds true.
Before you create a pivot table, it is important to <em><u>Create a database</u></em>.
Option: A
<u>Procedure to create Pivot Table:
</u>
1. Select the cells and table in the sheet containing the data you want to use.
2. Go to the Insert tab and click the PivotTable command.
3. In the dialog box ‘Create PivotTable’ will appear. Choose your settings, then click OK. In our example, we will use Sheet1 as our source data and insert the PivotTable on a new worksheet.
4. The Field List and blank PivotTable will appear on a new worksheet.
5. Once you create a PivotTable, you have to decide which fields to add. Each field has a simple column header from the source data. In the PivotTable Field List, check the box for each field you want to add.
6. The selected fields will be added to one of the four areas below the Field List. In our example, the Salesman field has been added to the Rows area, while the Order Amount has been added to the Values area. Alternatively, you can click, hold, and drag a field to the desired area.
7. The PivotTable values will calculate and summarize the selected fields. In our example, the PivotTable shows the amount sold by each salesman.
