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DAVJ277 1.2.3

J277 GCSE CS 1.2.3 UNITS

QuestionAnswer
What is a Bit? A single Binary digit. 0 or 1
What is a Nibble? 4 bits Half a byte.
What is a Byte? 8 bits Can represent one character using ASCII.
What is a Kilobyte? KB 1000 bytes 8000 bits. Remember kilo means thousand.
What is a Megabyte? MB 1000 kilobytes 1,000,000 bytes. 8,000,000 bits Remember mega means million.
What is a Gigabyte? GB 1000 megabytes 1,000,000,000 bytes. 8,000,000,000 bits Remember giga means billion.
How many bytes are there in 2 megabytes? 2,000,000 bytes in 2 megabytes
How many bits are there in a byte? 8 bits
What is a terabyte 1000 gigabytes 1,000,000,000,000 bytes. 8,000,000,000,000 bits Remember tera is a million, million.
What is a petabyte 1000 terabytes 1,000,000,000,000,000 bytes. 8,000,000,000,000,000 bits. Remember peta is a thousand million, million.
Put these data storage units into ascending order: Gigabyte, byte, terabyte, bit, megabyte, nibble, petabyte, kilobyte Bit Nibble Byte Kilobyte Megabyte Gigabyte, Terabyte, Petabyte
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