Bar code Hand Terminal, also known as inventory machine, handheld computer. It is the bar code scanning device, RFID technology and data terminal integration, with the battery can be operated off-line computer equipment. Real-time acquisition, automatic storage, real-time display, real-time feedback, automatic processing, automatic transmission function. Providing assurance of the authenticity, effectiveness, real-time nature and availability of field data. It is integrated, mobile, small size, light weight, high performance, and suitable for hand-held features