If im not mistaken, ur depreciation is realised the same year you bought the machine. Your balance sheet would therefore contain:
Assets: 2880
Accumulated depreciation: 2880
Net Assets: 0
(Note: Thats assuming u dont have any other assets.)
Your Income Statement would also include a section for "Annual Depreciation" in the "Expenses" section.
Regarding your original question, if you estimate that the useful life of the asset is 4 yrs, then you should expense the cost of it over 4 yrs, rather than a single lump sum cost as your not accurately reflecting "using up" the asset.
I have also omitted the possibility that there would be some residual value left over in the asset when you come to scrap it.
Ive only just started learning this, so please take what i have written above with a pinch of salt. To the best of my knowledge its correct.