51 single-chip microcomputer and development board is what relation? How to use?

51 single-chip microcomputer and development board is what relation? How to use?
8051 51 SCM is a eight micro controller chip, it is the core component of 51 development board, SCM development board is commonly used the periphery of the single chip microcomputer integrated into the device on a circuit board, and SCM together make up a development system, can be in development board by writing to a program to control the device implements around corresponding function, to study the purpose of the single chip microcomputer. Specific usage of different development board be different, but they are usually need to be connected to a computer to have some serial port driver (serial used to download a program to SCM). Cross-examine me interested in this, but I get on one, what more do not understand, and the related books about ah of what simply do not understand!!!!! I should where to start?
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