10 Questions
What is the basic unit of information in computing?
A bit
How many bits are in a byte?
8 bits
What is the approximate number of bytes in a kilobyte?
1,024 bytes
How many megabytes are in a gigabyte?
1,024 MB
How many bytes are in a terabyte?
1 trillion bytes
What is the primary difference between a bit and a byte?
A bit is a single binary digit, while a byte is a group of 8 bits
How many kilobytes are in a single megabyte?
1,024 kilobytes are in a megabyte
What is the approximate storage capacity of a typical CD?
650-700 MB
Which of the following is NOT true about a gigabyte?
A gigabyte is a common size for a CD
What is the approximate file size of a high-resolution image?
1-5 MB
Study Notes
Data Sizes in Computer Science
Bit vs Byte
- A bit is the basic unit of information in computing and represents a single binary digit (0 or 1).
- A byte is a group of 8 bits that can represent a character, number, or other type of data.
- 1 byte = 8 bits
Data Sizes: Kilobyte to Gigabyte
- Kilobyte (KB): 1 KB = 1,024 bytes (approx. 1 thousand bytes)
- Megabyte (MB): 1 MB = 1,024 KB (approx. 1 million bytes)
- Gigabyte (GB): 1 GB = 1,024 MB (approx. 1 billion bytes)
- Terabyte (TB): 1 TB = 1,024 GB (approx. 1 trillion bytes)
Key Conversions:
- 1 KB = 1,024 bytes
- 1 MB = 1,024 KB = 1,048,576 bytes
- 1 GB = 1,024 MB = 1,073,741,824 bytes
Bits and Bytes
- A bit is the basic unit of information in computing, representing a single binary digit (0 or 1).
- A byte is a group of 8 bits that can represent a character, number, or other type of data.
- 1 byte is equal to 8 bits.
Data Sizes
- A kilobyte (KB) is a unit of measurement that equals 1,024 bytes (approximately 1 thousand bytes).
- A megabyte (MB) is a unit of measurement that equals 1,024 kilobytes (approximately 1 million bytes).
- A gigabyte (GB) is a unit of measurement that equals 1,024 megabytes (approximately 1 billion bytes).
- A terabyte (TB) is a unit of measurement that equals 1,024 gigabytes (approximately 1 trillion bytes).
Key Conversions
- 1 kilobyte (KB) equals 1,024 bytes.
- 1 megabyte (MB) equals 1,024 kilobytes, or 1,048,576 bytes.
- 1 gigabyte (GB) equals 1,024 megabytes, or 1,073,741,824 bytes.
Data Sizes
- Bit: The basic unit of information in computing, representing a single binary digit (0 or 1)
- Byte: A group of 8 bits, used to represent a single character or number
Data Measurement Units
- Kilobyte (KB): 1,024 bytes
- Megabyte (MB): 1,024 kilobytes (1,048,576 bytes)
- Gigabyte (GB): 1,024 megabytes (1,073,741,824 bytes)
- Terabyte (TB): 1,024 gigabytes (1,099,511,627,776 bytes)
Notable Conversions
- 1 Megabyte (MB) is equal to 1,024 Kilobytes (KB)
- 1 Gigabyte (GB) is equal to 1,024 Megabytes (MB)
- 1 Terabyte (TB) is equal to 1,024 Gigabytes (GB)
Common Data Sizes
- A typical text document is usually between 1-10 Kilobytes (KB)
- A high-resolution image is usually between 1-5 Megabytes (MB)
- A CD storage capacity is around 650-700 Megabytes (MB)
- A DVD storage capacity is around 4.7 Gigabytes (GB)
Learn about the basics of data sizes in computing, including bits, bytes, kilobytes, megabytes, and gigabytes. Understand the conversion between each unit.
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