This a FREE tool chain which compiles C codes into 8051 binary code, converts the binary to RTL ROM, and simulate in Modelsim. SDCC is the compiler. Example compilation: cd compile sdcc --iram-size 0x80 --xram-size 0x800 t8051.c RE

electronic lock by C language and simulation file by proteus software. in this project by using a keypad and alphabetic lcd 2*16 which are attached to a 8051 micro controller, an electronik lock is implemented. first of all read the help file.