2.2　Abbreviation

B/S—Browser/Server

C/S—Client/Server

CPU—Central Processing Unit

D1—480i display format of digital television system（Digital 1）

ERP—Enterprise Resource Planning

HMI—Human Machine Interface

IP—Internet Protocol

IO—Input/output

IPC—Industrial Personal Computer

OA—Office Automation

PLC—Programmable Logic Controller

QoS—Quality of Service

RAID—Redundant Arrays of Independent Disks

TCP/IP—Transmission Control Protocol/Internet Protocol

UPS—Uninterruptible Power Supply

VLAN—Virtual Local Area Network