7-1可编程逻辑器件PLD概述 7-2可编程逻辑器件PLD的基本单元 7-3可编程只读存储PROM和可编程逻辑阵列PLA 7-4可编程逻辑器件PAL和通用逻辑阵列GAL 7-5高密度可编程逻辑器件 HDPLD原理及应用 7-6现场可编程门阵列FPGA 7-7随机存取存储器(SRAM)

3.1组合逻辑电路的分析方法 3.2组合逻辑电路的设计方法 3.3若干常用的组合逻辑电路 3.4组合逻辑电路中的竞争-冒险现象

7.1半导体存储器的分类 7.2存储器的组成 7.3存储器的主要技术指标 7.4只读存储器(ROM) 7.5随机存储器(RAM) 7.6存储器的扩展

2.1分立元件门电路 2.2TTL集成逻辑门电路 2.3其他类型的TTL门电路 2.4Ms逻辑门 2.5使用逻辑门的几个实际问题

组合电路:不含记忆元件、无反馈、输出与原来状态无关 触发器能够存储一位二进制信息的基本单元。 触发器特点:

桶式移位器 简单浮点编码器 双优先级编码器 级联比较器 关模比较器

Z-Transform The DTFT provides a frequency-domain representation of discrete-time signals and LTI discrete-time systems Because of the convergence condition, in many cases. the DTFT of a sequence may not exist As a result, it is not possible to make use of such frequency-domain characterization in these cases

An LtI discrete-time- system is completely characterized in the time-domain by its impulse response {h[n]} We consider now the use of the DTFT and the z-transform in developing the transform- domain representations of an Lti system Copyright 2001, S. K. Mitra

Later in the course we shall review various methods of designing frequency-selective filters satisfying prescribed specifications · We now describe several loworder- FIR and IIR digital filters with reasonable selective frequency responses that often are satisfactory in a number of applications Copyright 2001, S. K. Mitra

Discrete-Time Signals: Time-Domain Representation Signals are represented as sequences of numbers, called samples Sample value of a typical signal or sequence denoted as x[n] with n being an integer in the range-∞≤n≤∞ ·x[n] defined only for integer values of and undefined for non-integer values