常用EEPROM芯片的读写操作，51单片机控制电路，实验时要用74LS373一片，AT28C16一片，AT28C17一片，电路十分简单，根据实际电路联接情况，自行确定存储地址，最后别忘了还要8个LED和470欧姆电阻.-EEPROM chip used to read and write operations, 51 MCU control circuit, experiment, use 74LS373 1, AT28C16 1, AT28C17 1, the circuit is very

日本OHM社编的《图解电工学入门》PDF电子书，为方便阅读，我已加上目录标签-Japan OHM agency made a graphic electrotechnics entry PDF e-book, to facilitate the reading, I have to add the directory label

SIMPLE 8X8 LED MATRIX SCROLLING EXAMPLE 16F872 External 4MHz Xtal Osc LED Matrix columns are conected to PORTC via ULN2004AN to 0v. RC0 - 1st column on left of display LED Matrix rows conected to PORTB via 100 ohm resistors (Resistor val