通过对存储器24C512的所有单元分别写入“00”，然后读出存储器24C512，判断读出数据是否为“00”；再对存储器24C512的所有单元分别写入“FF”，然后读出存储器24C512，若输入和输出符合，证明存储器无坏点。
上传时间： 2016-11-29
上传用户：爺的气质
=== === === === === === === === === === ==== IBM PC KEYBOARD INFORMATION FOR SOFTWARE DEVELOPERS ================================================================ Sources: PORTS.A of Ralf Brown s interrupt list collection repairfaq.org keyboard FAQ(doesn t appear to exsist) Linux source code Test hardware: New Samsung KB3T001SAXAA 104-key keyboard Old Maxi 2186035-00-21 101-key keyboard NO WARRANTY. NO GUARANTEE. I have tried to make this information accurate. I don t know if I succeeded. Corrections or additional information would be welcome. This is a plain-text document. If you use a word-processor to view it, use a fixed-pitch font (like Courier) so columnar data and ASCII art lines up properly.
标签： INFORMATION DEVELOPERS KEYBOARD SOFTWARE
上传时间： 2014-08-18
上传用户：ecooo
周立功magic2410实验箱源码 第6章Linux高级实验(part3) 6.16无线网络实验 6.17 CAN接收实验 6.18 CAN发送实验 6.19 CAN通信参数设置实验 6.20 busybox移植实验 6.21 boa移植实验 6.22 Madplay移植实验
上传时间： 2017-09-07
上传用户：ikemada
单片机延时计算小程序，单片机延时计算程序源代码。
上传时间： 2014-12-25
上传用户：604759954
汇编指令
上传时间： 2013-12-18
上传用户：hhkpj
运用TI公司提供的MSP430F149芯片，外加4*4矩阵键盘，和诺基亚5110液晶，通过按键，实时在5110液晶上显示相应的数字符号。改程序模块清晰，适合初学者学习。
上传时间： 2014-12-26
上传用户：LIKE
Information in this document is subject to change without notice and does notrepresent a commitment on the part of the manufacturer. The software describedin this document is furnished under license agreement or nondisclosureagreement and may be used or copied only in accordance with the terms of theagreement. It is against the law to copy the software on any medium except asspecifically allowed in the license or nondisclosure agreement. The purchasermay make one copy of the software for backup purposes. No part of this manualmay be reproduced or transmitted in any form or by any means, electronic ormechanical, including photocopying, recording, or information storage andretrieval systems, for any purpose other than for the purchaser’s personal use,without written permission.
上传时间： 2014-12-27
上传用户：Tracey
The PCA9544A provides 4 interrupt inputs, one for each channeland one open drain interrupt output. When an interrupt is generated byany device, it will be detected by the PCA9544A and the interruptoutput will be driven LOW. The channel need not be active fordetection of the interrupt. A bit is also set in the control byte.Bits 4 – 7 of the control byte correspond to channels 0 – 3 of thePCA9544A, respectively. Therefore, if an interrupt is generated byany device connected to channel 2, the state of the interrupt inputs isloaded into the control register when a read is accomplished.Likewise, an interrupt on any device connected to channel 0 wouldcause bit 4 of the control register to be set on the read. The mastercan then address the PCA9544A and read the contents of thecontrol byte to determine which channel contains the devicegenerating the interrupt. The master can then reconfigure thePCA9544A to select this channel, and locate the device generatingthe interrupt and clear it. The interrupt clears when the deviceoriginating the interrupt clears.
标签： 4channel multiple 9544A 9544
上传时间： 2014-12-28
上传用户：潜水的三贡
微机接口技术课件：第1章 微型计算机概论第2章 80X86微处理器第3章 存储器及其接口第4章 输入输出与中断第5章 并行接口第6章 定时器/计数器电路第7章 串行接口第8章 模拟接口第9章 人机接口第10章 微机系统实用接口知识
上传时间： 2014-03-02
上传用户：chenjjer
另一条通讯。
上传时间： 2014-12-29
上传用户：ssj927211
