(L02) Holt Company purchased a computer for $8,000 on January 1, 2016. Straight-line depreciation is used, based on a 5-year life and a $1,000 salvage value. In 2018, the estimates are revised. Holt now feels the computer will be used until December 31, 2019, when it can be sold for $500. Compute the 2018 depreciation.