### Syllabus Detail

• Storage capacities including; bit, byte, kilobyte, megabyte, gigabyte, terabyte. 11 ATAR, 12 GEN

### Background

• Storage is the holding of data that can be retrieved for future use
• Capacity is the maximum amount that something can hold
• Storage capacity in terms of computing is the maximum amount of data that can be held and retrieved
• bit is the basic unit of information for computer systems and can only have one of two values (commonly represented as a 1 or a 0)
• Bit is shorthand for binary digit

### Common references of storage

• A bit = the basic unit (can contain only one of two values)
• A byte = made up of 8 bits
• A kilobyte [kb] = made up of 1024 bytes (generally referenced as 1000 bytes, hence kilo)
• A megabyte [mb] = made up of 1024 kilobytes (generally referenced as 1000 kilobytes, hence mega)
• gigabyte [gb] = made up of 1024 megabytes (generally referenced as 1000 megabytes, hence giga)
• terabyte [tb] = made up of 1024 gigabytes (generally referenced as 1000 gigabytes, hence tera)

### The Quirks

• Although commonly referenced in terms of thousands, you'll notice they end in multiples of two
• This is because memory is measured in terms of base two
• Hence,
• 2 ^ 1 = 2
• 2 ^ 2 = 4
• 2 ^ 3 = 8
• ...
• 2 ^ 10 = 1024

### Further Research

1. 'Bits and Bytes' explanation by Stanford here
2. 'Bits vs Bytes' explanation by New Jersey Institute of Technology here

### Worksheet and Practice (yet to be added)

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