3. Explain why computer is so powerful tool.

Computers are powerful tools for several reasons:

1. Speed and Efficiency: Computers can process information much faster than humans. They can perform billions of calculations per second, allowing them to analyze and manage large amounts of data quickly and efficiently.

2. Storage Capacity: Computers have a large storage capacity. They can store vast amounts of information in a small space, making it easy to organize and retrieve data.

3. Connectivity: Computers can connect to the internet, allowing users to access information from around the world, communicate with others, and perform tasks remotely.

4. Versatility: Computers can perform a wide range of tasks. They can be used for everything from creating documents and spreadsheets to designing graphics, editing videos, and playing games.

5. Automation: Computers can automate repetitive tasks, freeing up time for users to focus on more complex tasks. They can also be programmed to perform tasks at specific times or in response to certain events.

6. Accuracy: Computers are highly accurate. They can perform complex calculations without making mistakes, and they can process and analyze data without bias.

7. Cost-Effective: While the initial cost of a computer can be high, the efficiency and productivity gains they provide often make them a cost-effective investment in the long run.