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[ELanguage] keil_c51_maule DL : 0: 个人收藏的14篇有关KEIL C51语言编程的使用要点。目录： C51变量或数据类型 C51 怎样将1个子程序段定位在1个固定的地址位置 C51存储模式 C语言下的单片机软件抗干扰实现的基本技巧之一---------对绝对地址的访问 DOS界面的KEIL C编译器的使用方法(^_^) keil51开发系统概述 Keil C51函数(不仅仅是函数,呵呵) Keil C51扩展关键字 Keil C51软件包中的通用文件 Keil C51指针程序结构----KEIL C51的Bin、Inc、Lib三个子文件夹介绍绝对地址访问------C与汇编的接口----- C51软件包中的通用文件----- 段名转换与程序优化内存区域(Memory Areas)的定义--关键字一个绝对地址使用的编程例子-personal collection of 14 related KEIL C51 use the programming language elements. Contents : C51 variables or data type C51 how a sub-positioning of the procedures in a fixed location address storage model C51 C language under the SCM software interference with the basic skills to achieve one of the absolute address --------- visit DOS interface KEIL C compiler to use (^_^) keil51 development system outlined Keil C51 function (not just function, huh) Keil Keil C51 C51 keyword expansion package definitive document Keil C51 program structure-pointer KEIL C51 Bin, Inc. Lib 3 subfolders introduced absolute addresses ------ C and compiled by the interface C51 ----- generic package of documents ----- convert with the procedures and optimize memory (Memory Areas), the definition -- a keyword abso
Date : 2008-10-13 Size : 16.03kb User : 王克敏
[ELanguage] keil_c51_maule DL : 0: 个人收藏的14篇有关KEIL C51语言编程的使用要点。目录： C51变量或数据类型 C51 怎样将1个子程序段定位在1个固定的地址位置 C51存储模式 C语言下的单片机软件抗干扰实现的基本技巧之一---------对绝对地址的访问 DOS界面的KEIL C编译器的使用方法(^_^) keil51开发系统概述 Keil C51函数(不仅仅是函数,呵呵) Keil C51扩展关键字 Keil C51软件包中的通用文件 Keil C51指针程序结构----KEIL C51的Bin、Inc、Lib三个子文件夹介绍绝对地址访问------C与汇编的接口----- C51软件包中的通用文件----- 段名转换与程序优化内存区域(Memory Areas)的定义--关键字一个绝对地址使用的编程例子-personal collection of 14 related KEIL C51 use the programming language elements. Contents : C51 variables or data type C51 how a sub-positioning of the procedures in a fixed location address storage model C51 C language under the SCM software interference with the basic skills to achieve one of the absolute address--------- visit DOS interface KEIL C compiler to use (^_^) keil51 development system outlined Keil C51 function (not just function, huh) Keil Keil C51 C51 keyword expansion package definitive document Keil C51 program structure-pointer KEIL C51 Bin, Inc. Lib 3 subfolders introduced absolute addresses------ C and compiled by the interface C51----- generic package of documents----- convert with the procedures and optimize memory (Memory Areas), the definition-- a keyword abso
Date : 2026-01-11 Size : 16kb User : 王克敏
[ELanguage] Canbus_v3 DL : 0: The purpose of this project is a simple and easy to use USB <> CAN bus interface. Heart of the circuit is an Atmel AVR ATmega162 microcontroller which controls the Communication between FTDI FT245BM USB to parallel converter and Philips SJA1000 Stand-alone CAN bus controller. The SJA1000 is memory mapped into memory space of the AVR, which reduces data and address line handling and increases data transfer speed. An FT245BM handles all USB communication and provides data transfer from and to PC application. An extra EEPROM can store the multi device template for the FT245BM. A Philips PCA82C250/251 works as CAN controller interface. Firmware is written in C, compatible to latest compiler version WinAVR.
Date : 2026-01-11 Size : 32kb User : nabilos
[ELanguage] the-benefits-of-the-set-p-=-NULL DL : 0: (1)在没有 p = NULL 时，指针p是指向一个内存地址的，只是这个内存地址对当前程序是非法的。对黑客来说，这可是一个机会。每次程序崩溃时几乎都会在同一个地址（p所指的位置），这个地址会很容易到黑客手上的，然后黑客可以在指定的内存地址上事先布置好自己的代码，然后运行程序，崩溃时就会到黑客指定的代码上去，结果不堪设想啦。 (2)在有 p = NULL 时，程序同样崩溃，但崩溃的地址是0. 0地址对任何程序都是非法的，所以再牛的黑客也不能把自己的代码布置到内存地址是0的空间上。所以对这种情况，黑客也只能面对崩溃翻白眼，感叹生不逢时啊。 -(1) there is no p = NULL , the pointer p is pointing to a memory address, only the memory address of the current program is illegal. This is an opportunity for hackers. Every time program crashes are almost in the same address referred to in (p), it will be easy to this address to hackers, hackers can then on the specified memory address prior to decorate your code, and then run the program, the collapse will be to the hacker specify code, the result is unimaginable. (2) in p = NULL Collapse, the program also collapse, but the address is 0. 0 address for any application is illegal, so cattle hackers cannot again to decorate your own code to the memory address space is 0. So in this case, the hacker can only face their collapse, lamented fate ah.
Date : 2026-01-11 Size : 13kb User : zhongdecai
[ELanguage] eeprom-lcd DL : 0: 24c02 eeprom interfacing with 89c51... AT24C02 is a two-wire serial EEPROM Atmel. 24C02 is an 8 pin IC and reads 8 bit data serially. Its memory size is 2KB. Pins 1- 3 are address pins which are connected to ground. Pin 4 is GND Pin 5 is SDA (serial data) and pin 6 is SCL (serial clock input). Pin 7 is WP (write protect) pin and is connected to GND. Pin 8 is Vcc for providing power supply. For details on its interfacing and operation, refer interfacing 24C02 with 8051. -24c02 eeprom interfacing with 89c51... AT24C02 is a two-wire serial EEPROM Atmel. 24C02 is an 8 pin IC and reads 8 bit data serially. Its memory size is 2KB. Pins 1- 3 are address pins which are connected to ground. Pin 4 is GND Pin 5 is SDA (serial data) and pin 6 is SCL (serial clock input). Pin 7 is WP (write protect) pin and is connected to GND. Pin 8 is Vcc for providing power supply. For details on its interfacing and operation, refer interfacing 24C02 with 8051.
Date : 2026-01-11 Size : 39kb User : Bala