Revert "Merge pull request #4 from eco32i/homework"

This reverts commit 27b46544c96d5c16efbfb8672fe615e035163e4b, reversing
changes made to 5102d056217772b4fd83115a091b17ec37d52fdb.
Merge pull request #5 from eco32i/revert_hw

Revert "Merge pull request #4 from eco32i/homework"