Across the twentieth century, the three "power" of the times, that is, the electrical era, the electronic age and the computer age which has entered now. However, such a computer, usually refers to a personal computer, or PC. It consists of the host, keyboards, monitors, etc. There is also a type of computer which is not familiar with by people. The computer is smart to give a variety of mechanical single-chip (also known as micro-controller). As the name suggests, these computer systems use only the minimum of an integrated circuit to make a simple calculation and control. Because of its small size, are usually charged with possession of machine in the "belly" in. It in the device, like the human mind plays a role, it is wrong, the entire device on the paralysis of the. Now, this single chip has a very wide field of use, such as smart meters, real-time industrial control, communications equipment, navigation systems, and household appliances. Once a variety of products with the use of the single-chip, will be able to play so that the effectiveness of product upgrading, product names often adjective before the word - "intelligent," such as washing machines and so intelligent. Single-chip learning is the most effective way of both theory and practice, this article will be used to single-chip 8051 and peripheral interfaces 8155, light-emitting diode, oscillator, reset, power circuit, as well as the composition of the necessary software to 8051 as the core, Des simple equipment and the necessary circuitry, designed a simple water lights, and the preparation of a simple procedure to enable it to automatically work.
Key words: single-chip8051, peripheral interface8155, water lights.
