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AT89S51的并行口P1接4×4矩阵键盘，以P1.0－P1.3作输入线，以P1.4－P1.7作输出线；在数码管上显示每个按键的“0－F”序号。

I2C driver for PIC, PICC compiler - bitbanged. Needs pull-up resistor on SCK and SDA and ports set for open collector

High volume USB 2.0 devices will be designed using ASIC technology with embedded USB 2.0 support. For full-speed USB devices the operating frequency was low enough to allow data recovery to be handled in a vendors VHDL code, with the ASIC vendor providing only a simple level translator to meet the U ...

High volume USB 2.0 devices will be designed using ASIC technology with embedded USB 2.0 support. For full-speed USB devices the operating frequency was low enough to allow data recovery to be handled in a vendors VHDL code, with the ASIC vendor providing only a simple level translator to meet the U ...

Besides enhanced looks and advanced features, one of the best things about Swing is its pluggable look and feel (PLAF). PLAF architecture allows seamless changes in the appearance of an application and the way an application interacts with the user. However, designing and developing a PLAF is much m ...

This is a Document on how to implement DDS on SX Communication controllers by Rho Enterprises with Full Hardware Diagram and Software Program.

利用随机数产生1000个0～100之间的考试分数，将其存入一个文本文件中，然后程序从这个文件中读取这1000个考试分数，统计其中各分数段（A[90,100]，B[80,90), C[70,80), D[60,70), F[0,60)）的人数 、所占百分比，平均分。

解方程，具体见英文描述，给一个连续方程，解出f(x) = 0 在一定范围的解

解方程，给出一个连续函数接f(x)=0的值，前提是给一个附近的值

NEWTON-RAPHSON求解一个连续方程，f（X）=0，前提给一个初始值