SPJ Embedded Technologies Pvt. Ltd. Offers 8051 Micro-controller Stimulating Software. SPJ Embedded Technologies Pvt. Ltd. Manufactures software tools like C compilers to hardware products like single board computers. 8051 Micro-controller Stimulating Software displays the 8051 CPU registers [R0 to R7, Acc., PC, SP, DPTR etc.] on the screen and the disassembled program is also displayed on the screen. 8051 Micro-controller Stimulating Software also simulates some commonly used peripherals, e.G. 8279, 8255, 8155, LCD etc. It is available for DOS [SIM51] and Windows95 [WSIM51] platforms.