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27 Nov 2019
A bit of computer memory is some physical object that can be in twodifferent states, often interpreted as 0 and 1. A byte is eightbits, a kilobyte is 1024 bytes, a megabyte is 1024 kilobytes and agigabyte is 1024 megabytes.
a: Suppose that your computer erases or overwrites one gigabyte ofmemory, keeping no record of the information that was stored.Explain why this process must creatte a certain minimum amount ofentropy, and calculate how much.
b: If this entropy is dumped into an environment at roomtemperature, how much heat must come along with it? Is this amountof heat significant?
A bit of computer memory is some physical object that can be in twodifferent states, often interpreted as 0 and 1. A byte is eightbits, a kilobyte is 1024 bytes, a megabyte is 1024 kilobytes and agigabyte is 1024 megabytes.
a: Suppose that your computer erases or overwrites one gigabyte ofmemory, keeping no record of the information that was stored.Explain why this process must creatte a certain minimum amount ofentropy, and calculate how much.
b: If this entropy is dumped into an environment at roomtemperature, how much heat must come along with it? Is this amountof heat significant?
