Library for 8051 is free software for 8051 family MCU's For Copying and licence information pleae see 'COPYING' and 'LICENCE' file Development Tools Required Toolchain : SDCC (Opensource toolchain for 8051/PIC Controllers) Text Editor : Programmer's notepad Prefered (Use any text editor) or Use Codeblocks with SDCC (An IDE for SDCC) Build Tool : GNU Make 3.81 (Opensource software build automation tool for C/C++ Developers) Flasher : Flash Magic (Flashing tool from NXP Semiconductor)