OCR J277 Paper 1 · 1.2.3

Units

Why binary is used, calculating file sizes, and converting between data units

Revision notes

• a.The units of data storage: Bit, Nibble, Byte, KB, MB, GB, TB, PB
• b.How data needs to be converted into a binary format to be processed by a computer
• c.Data capacity and calculation of data capacity requirements