4.4.1 同步二进制计数器 4.4.2 同步十进制计数器 4.4.3 异步计数器

其他TTL门电路 其他逻辑功能的TTL逻辑门电路:

Binary Arithmetic Binary arithmetic Addition - Augend+addend+carry-in Sum ....carry-out Subtraction - Minuend-subtrahend-borrow-in difference ...borrow-out

A function is a term used in mathematics and logic to denote a relationship between input and output variables. Each variable is restricted to binary (0, 1) values The relationship is the complex of three primitive functions (And \\Not\\Or)

Basie cCoucept Boolean algebra (Logic algebra) is closure mathematical system that defines a series of logic operation (and, or, not) performed on set k of variables (a, b,...) which can only have two values of 0 or 1

Karnaugh maps It is a matrix of squares. each square represent a minterm or maxterm from a Boolean equaTion N-variable karnaugh map have 2 squares The binary numeral on the sides of k-map is the variable coordinates

一、本章具有综述和概论的性质，内容比较广泛但不深入。 二、本章是从数字信号处理整个学科领域的广度来介绍该学科的概貌，包括学科范围、发展历史和动态、实现方法和应用领域，而本书的内容仅涉及数字信号处理学科中的基础知识

作业： 3.1，3.4，3.5，3.6，3.8，3.10， 3.13，3.15，3.16，3.18，3.20；

Digital system: entity can process, transfer and store any kind of digital signals is Composed of individual digital logic circuits which are designed to perform specified function

一、功能 产生(a,b)区间上均匀分布的随机数。 二、方法简介 均匀分布的概率密度函数为