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The µC/51 compiler is well known for it's high quality and high density code. You can develop high quality software for any 8051 in ANSI C. µC/51 comes with an incredible optimizing compiler, you can even write software in ANSI C on 8051's with 1kB of code memory! µC/51 is absolutely complete: user friendly multi file editor, compiler, assembler, downloader, source level debugger. It's a complete toolchain - You won't need anything else. Software Documentation... Download the actual software demo version (limited to 8KByte)