这是12864与复位字体显示子程序显示初始屏幕…

wendushangxiaxian baohu -wendushangxiaxian baohu

编译器的原代码，希望对喜欢编译器的高手们有帮助-compiler of the original code, and I hope to the likes compiler expert who help

121 243453543452 54您提供的文件包-121 243453543452 54 your packet of documents

(1) 要求本文件系统采用两级目录，即设置主文件目录[MFD]和用户文件目录[UFD]。在主文件目录中，每 个用户目录都占有一个目录项，其目录项中包含文件名和指向该文件目录文件。在用户文件目录UFD中， 这些文件目录具有相似的结构。具体测试时可考虑：设计一个10个用户的文件系统，每次用户可保存10 个文件，一次运行用户可以打开

1，消除按键的抖动问题 因为按键在闭合或断开过程中出现一段抖动期，主要由于按键的不稳定性引起的，这时会呈现一串页脉冲，时间的长短和开关的机械特性有关。一般在5ms~10ms之间。为保证CPU对键的一次闭合作一次处理，必须去抖动。在键的稳定闭合或断开时读键的状态。 2，据EICE51原理图编写并调试一个键输入子程序，其功能为判断键盘上有无键输入，若有键入，作去抖动处理后，计算输入键的键号送累加器A。-eliminate jitter button issues as keys or disconnect the closure process for some jitter period, mainly due to the instability of the keys to the cause, then it will result in a bunch of pages pulse, the duration and switches on the mechanical properties. General ~ 10ms between 5ms. To ensure that the CPU in a pair of keys a close cooperation, must go jitter. The key to the stability closed or disconnected when reading the key state. 2, EICE51 schematics prepared and debug a key input subroutine, and its function of determining whether keys on the keyboard input, if typing for to handle jitter, the admission of Bond, Bond sent accumulator A.

关于AD公司的ADSP21020型号芯片的历程，以VISUAL DSP++为开发环境-AD about the company" s chips course ADSP21020 models to VISUAL DSP++ as a development environment

通过P2.4,P3.3实现电机转速控制,源码汇编语言编写,单定时器实现-Through P2.4, P3.3 to achieve motor speed control, the preparation of assembly language source code, single-timer realize

用win32汇编语言写的一个万年历小程序-Win32 written in assembly language using a calendar applet

software UART using one wire

使用8255芯片，编写程序控制音乐发生器和LED工作使他们组成声光报警装置，自己设置按键来控制音乐发生器启-The use of 8255 chips, the preparation of program music generator and LED components work so that they sound and light alarm devices, set up their own buttons to control music generator Kai