SCAN or elevator algorithm
arm moves in one direction only until it reaches last track (or until no further requests in that direction, also known as LOOK), servicing requests as it goes
reverses direction after each scan
no starvation
upon reversal, tracks with highest density of requests likely to be furthest away! Circular SCAN (C-SCAN)
arm flies back to beginning instead of reversing direction upon reaching last track or no further requests in that direction (C-LOOK)

FIFO\C-scanproject.sln
....\C-scanproject.suo
....\C-scanproject
....\.............\bin
....\.............\...\Debug
....\.............\...\.....\C-scanproject.exe
....\.............\...\.....\C-scanproject.pdb
....\.............\...\.....\C-scanproject.vshost.exe
....\.............\...\.....\C-scanproject.vshost.exe.manifest
....\.............\FIFO.csproj
....\.............\Form1.cs
....\.............\Form1.Designer.cs
....\.............\Form1.resx
....\.............\obj
....\.............\...\Debug
....\.............\...\.....\C_scanproject.Form1.resources
....\.............\...\.....\C_scanproject.Properties.Resources.resources
....\.............\...\.....\C-scanproject.csproj.FileListAbsolute.txt
....\.............\...\.....\C-scanproject.csproj.GenerateResource.Cache
....\.............\...\.....\C-scanproject.exe
....\.............\...\.....\C-scanproject.pdb
....\.............\...\.....\FIFO.csproj.FileListAbsolute.txt
....\.............\...\.....\FIFO.csproj.GenerateResource.Cache
....\.............\...\.....\Refactor
....\.............\...\.....\TempPE
....\.............\Program.cs
....\.............\Properties
....\.............\..........\AssemblyInfo.cs
....\.............\..........\Resources.Designer.cs
....\.............\..........\Resources.resx
....\.............\..........\Settings.Designer.cs
....\.............\..........\Settings.settings

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