程序员密码学

讲解了ASN.1编码的规则，伪随机数生成算法，散列函数，大素数分解，及加密算法等。

NRS_009_6_8

南非 Standard transferspecification/Numeric tokentechnology的技术标准。

IEC62056-6-1

IEC 61107 or currently IEC 62056-21, was an international standard for a computer protocol to read utility meters. It is designed to operate over any media, including the Internet. A meter sends ASCII (in modes A..D) or HDLC (mode E) data to a nearby hand-held unit (HHU) using a serial port. The physical media are usually either modulated light, sent with an LED and received with a photodiode, or a pair of wires, usually modulated by a 20mA current loop. The protocol is usually half-duplex.

IEC 62056-6-2

This part of IEC 62056 specifies a model of a meter as it is seen through its communication interface(s). Generic building blocks are defined using object-oriented methods, in the form of interface classes to model meters from simple up to very complex functionality.

AED7755电能表计量芯片

ADI公司的代表计量芯片之一，ADE7755，用于单相电能表的计量。文档中对ADE755芯片的计量原理进行了介绍，以及计量芯片的一些参数。同时也给出了单相电能表的参考设计，很实用

50个典型电路详解

包含了50个基本的数字功能电路，并对这些电路进行了详解的讲解。包括芯片的选型等等，比较适合于初级硬件工程师提高自己。

AES算法C++源码

AES算法C++源码，aes算法c(c++)_支持128、192和256位密钥