Joining a engineering, this paper gives the high speed and low consuming circuit of network communication based on the microprocessor of S3C4510B, it takes DM9161 as a physical layer interface.

The series of ARM7 is extensive and widely applied microprocessor, while the current object circuit board of ARM7 are cut by mature evaluating board without PS2 interface.

This terminal's hardware design mainly includes the choice of microprocessor chip, the interface design of MC35 module of communication, the circuit design of memory modules and serial port and so on.