Bytes & Data Sizes

Bits · Bytes · KB · MB · GB · TB

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How bits group into bytes, how bytes scale into KB, MB, GB, and TB, and why the same bytes measure both memory and storage.

By the end, you can

State how many bits are in a bit, nibble, and byte, and what range a byte can hold.
Convert a byte value to its binary representation by toggling the correct place-value bits.
Name the data-size units in order and state the approximate multiplier between each step.
Distinguish the decimal (SI) definition of KB (1,000 bytes) from the binary (IEC) definition of KiB (1,024 bytes).
Explain why a "1 TB" drive reports as ~931 GB and confirm that no storage is actually lost.
Estimate the data size of common real-world items (text messages, photos, movies).
Contrast volatile RAM with non-volatile storage and give realistic capacity examples for each.

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