how to write and run embedded c program in keil software

For detailed step please read How to write and run embedded c program in keil
The HELLO sample program, located in the folder ..\Examples\Hello, can be used to confirm the correct installation of the toolchain. The program prints the text "Hello World" to a serial port. Use this small application to start compiling, linking, and debugging an application with µVision. The example program operates on various devices. The only on-chip peripheral used is the serial port (along with a baudrate generator). A target CPU is not needed. µVision simulates the hardware required for this program.

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