The MSP430 micros have JTAG interface that allows access to the internal bus of the processor to locate breakpoints (breakpoints), analyze the values ​ ​ of the variables in memory and run the program instruction by instruction. This interface is accessible via 4-pin and using an adapter, you can connect to a PC via serial, parallel or USB. Thus, development software code allows editing and subsequent purification using the same micro plate and which bear the same definitely, without the need for expensive real time emulators.