The software and hardware design of the PP-1 magnetic card read write device are introduced in this paper,which adopted the dual-frequency coherent phase means to coding and adopted BCD code appended check code means to compose character.

• 本文介绍以双频相干相位方式进行编码和以BCD码加校验码方式进行字符组合的磁卡读写器的软件、硬件设计。