Abstract
For many of today's onboard electrical timer with a one-way only, that is regularly open only to achieve timing or customs, the future can not be opened or closed after the Commissioner can not be opened, and the timing can not save time, each time a user must use before Re-setting and other shortcomings, this issue to achieve a design based on the SCM smart timer. The AT89C2051 is designed to Micro controller Unit, the system by the display module, a key module, the output power control module and the modules can achieve the control of the intelligent control of the region. In this paper, design and development of smart timers, with intelligent and low-cost, easy to operate, and other characteristics of the area can be used for industrial automation, the neon lights advertising company control, military equipment of arms control, etc., can be used for small appliances Control, or even children can be used to make electronic toys, a relatively high value.
Key words: Micro controller Unit；Intelligence；Timer .
