Features • Compatible with MCS-51® Products • 8K Bytes of In-System Programmable (ISP) Flash Memory – Endurance: 1000 Write/Erase Cycles • 4.0V to 5.5V Operating Range • Fully Static Operation: 0 Hz to 33 MHz • Three-level Program Memory Lock • 256 x 8-bit Internal RAM • 32 Programmable I/O Lines • Three 16-bit Timer/Counters • Eight Interrupt Sources • Full Duplex UART Serial Channel • Low-power Idle and Power-down Modes • Interrupt Recovery from Power-down Mode • Watchdog Timer • Dual Data Pointer • Power-off Flag
標簽： 8226 Programmable Compatible In-System
上傳時間： 2015-06-27
上傳用戶：dianxin61
Open Source for the Enterprise Open source software is changing the world of Information Technology. But making it work for your company is far more complicated than simply installing a copy of Linux. If you are serious about using open source to cut costs, accelerate development, and reduce vendor Lock-in, you must institutionalize skills and create new ways of working. You must understand how open source is different from commercial software and what responsibilities and risks it brings. Open Source for the Enterprise is a sober guide to putting open source to work in the modern IT department.
標簽： Open Information Enterprise the
上傳時間： 2013-12-27
上傳用戶：R50974
About: hamsterdb is a database engine written in ANSI C. It supports a B+Tree index structure, uses memory mapped I/O (if available), supports cursors, and can create in-memory databases. Release focus: Major feature enhancements Changes: This release comes with many changes and new features. It can manage multiple databases in one file. A new flag (HAM_Lock_EXCLUSIVE) places an exclusive Lock on the file. hamsterdb was ported to Windows CE, and the Solution file for Visual Studio 2005 now supports builds for x64. Several minor bugs were fixed, performance was improved, and small API changes occurred. Pre-built libraries for Windows (32-bit and 64-bit) are available for download. Author: cruppstahl
標簽： C. hamsterdb structure database
上傳時間： 2013-12-11
上傳用戶：LouieWu
學會對文件的記錄鎖定，及解鎖。#include <stdio.h> #include <unistd.h> #include <fcntl.h> int main() { int fd int i struct { char name[20] uint ID int age } myrec fd =open("name", O_RDWR|O_CREAT, 0755) if (fd == -1) return -1 printf("Input your name:") scanf("％s", myrec.name) printf("Inpute your ID :") scanf("％d", &myrec.ID) printf("Input your age :") scanf("％d", &myrec.age) lseek(fd, 0,SEEK_END) Lockf(fd, 1, 0) write(fd, (void *)&myrec, sizeof(myrec)) Lockf(fd, 0 ,0) return 0 } 執行命令cc Lock.c –o Lock.out Chmod +x Lock.out ./Lock.out
標簽： 記錄
上傳時間： 2016-01-04
上傳用戶：亞亞娟娟123
If you have programming experience and a familiarity with C--the dominant language in embedded systems--Programming Embedded Systems, Second Edition is exactly what you need to get started with embedded software. This software is ubiquitous, hidden away inside our watches, DVD players, mobile phones, anti-Lock brakes, and even a few toasters. The military uses embedded software to guide missiles, detect enemy aircraft, and pilot UAVs. Communication satellites, deep-space probes, and many medical instruments would have been nearly impossible to create without embedded software.
標簽： familiarity programming experience dominant
上傳時間： 2013-12-11
上傳用戶：362279997
鍵盤過濾驅動源碼，本例子是過濾了Caps Lock鍵,修改成了Ctrl鍵.
上傳時間： 2016-10-01
上傳用戶：epson850
SD卡驅動 SD_CARD_TIMEOUT 當一個SD卡的操作超出時限，將導致返回錯誤和該標記被置位 SD_CARD_EXIST 當卡槽內插入了合適的卡體，不管是什么卡，都會使該位被設置； SD_CARD_WRITE_PROTECT 當卡體的寫保護開關被 Lock 時，則該位被設置； SD_CARD_READY 當卡槽內的卡被正確識別，并可以隨時訪問時，則該位被設置； SD_CARD_DOOR_CLOSE 當卡槽的門（產品外殼上的擋板開關）關閉時，則該位被設置； SD_CARD_IS_SD 當卡槽內插入的是 SD 卡時，則該位被設置。 SD_CARD_IS_MMC 當卡槽內插入的是 MMC 卡時，則該位被設置； 注意：不要使用 0x80，免得和整數作邏輯運算時被誤為負數。
標簽： SD_CARD_TIMEOUT SD卡 驅動 操作
上傳時間： 2014-01-09
上傳用戶：稀世之寶039
BlackBerry Hacks will enhance your mobile computing with great tips and tricks. You ll learn that the BlackBerry is capable of things you never thought possible, and you ll learn how to make it an even better email and web workhorse: Get the most out of the built-in applications Take control of email with filters, searches, and more Rev up your mobile gaming--whether you re an arcade addict or poker pro Browse the web, chat over IM, and keep up with news and weblogs Work with office documents, spell check your messages, and send faxes Become more secure, Lock down your BlackBerry and stash secure information somewhere safe Manage and monitor the BlackBerry Enterprise Server (BES) and Mobile Data System (MDS) Create web sites that look great on a BlackBerry Develop and deploy BlackBerry applications
標簽： BlackBerry computing enhance mobile
上傳時間： 2016-12-07
上傳用戶：GavinNeko
MTK加密字庫讀手機密碼的好平臺，只要打開平臺手機開機自動聯機點SHOW PHONE Lock 即可讀出手機密碼
上傳時間： 2013-12-19
上傳用戶：康郎
A user-space device driver can do many of the things that kernel drivers can t, such as perform a long-running computation, bLock while waiting for an event, or read files from the file system. Unlike kernel drivers, a user-space device driver can use other device drivers--that is, access the network, talk to a serial port, get interactive input from the user, pop up GUI windows, or read from disks. User-space drivers implemented using FUSD can be much easier to debug it is impossible for them to crash the machine, are easily traceable using tools such as gdb, and can be killed and restarted without rebooting even if they become corrupted. FUSD drivers don t have to be in C--Perl, Python, or any other language that knows how to read from and write to a file descriptor can work with FUSD. User-space drivers can be swapped out, whereas kernel drivers Lock physical memory.
標簽： user-space can drivers perform
上傳時間： 2014-01-01
上傳用戶：saharawalker
