2022 | Resumo da Aula | 1ª Série | Matemática | Aula 9 - Unidades de Medida de Armazenamento de D...

Summary

In this educational video, Teacher Eliane introduces students to the concept of data storage units, explaining the history and technical aspects of storage devices like floppy disks. She explains the role of bytes, kilobytes, megabytes, gigabytes, and terabytes in data storage, including their equivalent values and how they are used to measure digital information. The video further demonstrates how storage capacity is measured, using real-life examples to calculate the amount of data a computer can store in various-sized hard drives. The lesson aims to simplify and clarify data storage concepts for first-grade students.

Takeaways

• 😀 The video introduces the concept of data storage units and discusses various types of storage devices, including floppy disks.
• 😀 Floppy disks, commonly used from the 1970s to early 2000s, had a storage capacity of up to 44MB.
• 😀 The script explains the concept of MB and KB, and asks the viewer to consider the size of data storage in these terms.
• 😀 A byte is the smallest unit of data storage and is represented by 8 bits.
• 😀 1 byte (B) is equivalent to 8 bits, which is the fundamental unit for processing data.
• 😀 Other important units of data storage mentioned are kilobytes (KB), megabytes (MB), gigabytes (GB), and terabytes (TB), each larger than the last.
• 😀 1 kilobyte (KB) equals 1024 bytes, 1 megabyte (MB) equals 1024 kilobytes, and so on.
• 😀 The script provides an example calculation showing that a 1GB hard drive can store 8.6 million bits.
• 😀 The teacher explains how to calculate the total number of bits that a hard drive can store based on its size in gigabytes.
• 😀 For different disk sizes (4.3GB, 2GB, 3.2GB), the calculation shows how many bits they can store, using the formula of 8.6 million bits per GB.

Q & A

What is a floppy disk, and when was it commonly used?

A floppy disk, also known as a disquete, is a magnetic disk used for data storage. It was commonly used from the 1970s to the early 2000s. The most common size was 3.5 inches (90 mm), with a storage capacity of 44 MB.

What is the storage capacity of a floppy disk?

A floppy disk typically had a storage capacity of 44 MB with a data transfer rate of 500 cabaites and 720 KB of capacity.

What is the difference between a byte and a bit?

A bit is the smallest unit of digital information and can have a value of either 0 or 1. A byte, represented by the letter 'B,' consists of 8 bits and is considered the smallest unit of storage that can be processed.

What does 'KB' stand for, and what is its equivalent in bytes?

'KB' stands for kilobyte, and it is equivalent to 1024 bytes.

How many bytes are in one megabyte (MB)?

One megabyte (MB) is equivalent to 1024 kilobytes (KB), or 1,048,576 bytes.

What is the storage hierarchy for data units?

The hierarchy for data storage units is as follows: 1 KB = 1024 bytes, 1 MB = 1024 KB, 1 GB = 1024 MB, and 1 TB = 1024 GB.

How many bits can a 1 GB hard disk store?

A 1 GB hard disk can store 8.6 million bits, which is equivalent to 8.6 billion signals.

How do you calculate the amount of bits a hard drive can store?

To calculate the number of bits a hard drive can store, multiply the storage capacity (in GB) by 8.6 million bits. For example, a 4.3 GB hard drive can store 36.9 million bits.

How many bits can a 2 GB hard drive store?

A 2 GB hard drive can store 17.2 million bits (2 x 8.6 million).

How many bits can a 3.2 GB hard drive store?

A 3.2 GB hard drive can store 27.5 million bits (3.2 x 8.6 million).