文档预览： All internal component connections are all based on the I/O pins of the ...Q4 1 17 15 13 11 1 74LS240 R2 2.2k Q2N2222 Q2 R4 2.2k Q2N... 点击下载

文档预览： 8279采用外部译码操作方式,74LS138输出8位显示器的位控制信号和键盘的行扫描信号.8279的8位输出线A0-A3和B0-B3与数码管的8个段相对应,经74LS240缓冲后,去驱动... 点击下载

文档预览： DxDesigner for PADS Flow Student Workbook 2008-2010 Mentor Graphics Corporation All rights reserved. This document contains information that is proprietary to Mentor Graphics Corporation. The original recipient of this document may ... 点击下载

文档预览： H8-Z80-64 The H8-Z80-64 is a replacement CPU card for the H8 computer using the Z80 processor. This document explains how to configure the card for your system. The card was manually routed using KiCad and not auto-routed from a schematic. 点击下载

文档预览： 当应用该电路时,因 74LS240,7407 只具有驱动功能,所以需将 JS33,JS34 接在 具锁存功能的输出端口上. 当需要显示第一位时,在笔划锁存器中为第一位要显示的... 点击下载

文档预览： III CHAPTER 1: Introduction 1 CHAPTER 2: Preparing a Schematics-Based Design for Layout 3 2.1 Background 3 点击下载

文档预览： 合格的电子工程师需要掌握的知识和技能 愚以为,掌握了一下的硬件和软件知识,基本... 74LS573 6, ULN2003 ...3, 74LS573 与 74LS373 – 8 数据锁存器 74LS... 点击下载

文档预览： Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes noresponsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties ... 点击下载

文档预览： 74LS244(输入输出同相)/74LS240(输入输出反相)一条输入指令可以同时读入8位或16位开关量.图3-12 基本开关量输入接口2. 矩阵式开关量输入接口... 点击下载

文档预览： 145,"集成电路","74LS181"146,"集成电路","74LS193"147,"集成电路","74LS20"148,"集成电路","74LS21"149,"集成电路","74LS240"... 点击下载