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Summary

This video explains the fundamental concepts of how computers store data using the binary system. It introduces key terminology such as bits, bytes, kilobytes, megabytes, gigabytes, and terabytes, illustrating their use with everyday comparisons. Viewers learn that 1 byte equals 8 bits, and data storage grows exponentially as you move from kilobytes to terabytes. The video also touches on the evolution of storage technology, from floppy disks to modern flash drives. By the end, viewers gain a clear understanding of digital storage terms and their real-world applications.

Takeaways

• 😀 Computers use the binary system, consisting of only two digits: 1 and 0.
• 😀 A bit (short for binary digit) is the smallest unit of data in a computer.
• 😀 Eight bits make up one byte, which is the space required to store a single letter or symbol.
• 😀 One kilobyte (KB) equals 1000 bytes and is enough to store about two pages of text.
• 😀 Historically, a 5.25-inch floppy disk could hold 360 kilobytes of data.
• 😀 One megabyte (MB) equals 1000 kilobytes and can store around five large books, one photo, or one minute of music.
• 😀 A 3.5-inch floppy disk from the 1980s could store 1.4 megabytes of data.
• 😀 One gigabyte (GB) equals 1000 megabytes and can store approximately 400 books, 1000 pictures, or 16 hours of music.
• 😀 In the 1990s, a 1 GB hard drive cost a few hundred dollars, whereas today a 1 GB flash drive costs only about five dollars.
• 😀 One terabyte (TB) equals 1000 gigabytes and can hold about 400,000 large books, 1 million pictures, or two years of continuous music.
• 😀 Modern storage devices, like hard drives, have drastically decreased in cost, with 1 TB drives now available for under $50.

Q & A

What is a bit in computer storage?

A bit is the smallest unit of data in a computer and can have one of two values: 1 or 0. It's short for 'binary digit' and is fundamental to how computers store data.

How are bits used in a computer?

Bits are used to store all types of information, including text, images, sounds, and more. By combining multiple bits, computers can represent complex data.

What is a byte?

A byte consists of 8 bits grouped together and is used to store a single character or symbol in a text document.

How much storage does one kilobyte (KB) represent?

One kilobyte (KB) is equivalent to 1000 bytes of storage. It is enough space to store roughly two pages of text.

Why is there a difference between 1000 and 1024 bytes in a kilobyte?

The difference comes from the fact that computers use a binary system, and 1024 is a power of 2. However, for simplicity, we often round kilobytes to 1000 bytes in everyday terms.

What storage device from the 1980s could hold 360 KB of data?

The 5.25-inch floppy disk was popular in the late 1970s and early 1980s and could store 360 KB of data.

What is the capacity of one megabyte (MB)?

One megabyte (MB) is equivalent to 1000 kilobytes (KB) and can hold approximately five large books, one photo, or one minute of music.

How much data can a gigabyte (GB) store?

A gigabyte (GB) is equal to 1000 megabytes (MB) and can store around 400 books, 1000 pictures, or 16 hours of music.

What is the size of a terabyte (TB)?

A terabyte (TB) equals 1000 gigabytes (GB) and can store about 400,000 large books, 1 million pictures, or 2 years of continuous music.

How much would a 1TB hard drive cost today?

Today, you can purchase a 1TB hard drive for under $50, which shows how much the cost of storage has decreased over time.