 |  |  |
| PAP | Password Authentication Protocol | 密码认证协议 |
| PC | Personal Computer | 个人电脑 |
| PCB | Printed Circuit Board | 印刷电路板 |
| PCI | Peripheral Component Interconnect | 外围设备互连 |
| PCMCIA | Personal Computer Memory Card International Associate | （笔记本电脑扩展卡） |
| PDA | Personal Digital Assistant | 个人数据助理 |
| PDF | Portable Document Format | 可移植文档格式 |
| PERL | Practical Extraction and Reporting Language | 实际抽取报告语言 |
| PGP | Pretty Good Privacy | 高度保密 |
| PICS | Platform for Internet Content Selection | 因特网内容检索平台 |
| PnP | Plug and Play | 即插即用 |
| POP | Post Office Protocol | 邮局协议 |
| PPC | Palm Personal Computer | 掌上个人电脑 |
| ppm | pages per minute | 页每分钟 |
| PPP | Point to Point Protocol | 点对点协议 |
| PPTP | Point to Point Tunneling Protocol | 点对点通道协议 |
| PRI | Primary Rate Interface | 主速率接口 |
| PROM | Programmable Read Only Memory | 可编程只读存储器 |
| PSN | Packet Switching Network | 包交换网络 |
| | Packet Switching Node | 包交换节点 |
