超强抗干扰，无法解密，宏晶新一代８０５１单片机，高速、高可靠、宽电压、低工耗。-Super anti-interference, can not be decrypted, Acer Crystal a new generation of 8051, high-speed, high reliability, wide-voltage, low public consumption.

倒计时程序 可以自己设定倒计时时间，可运用8051单片机实现-Countdown program can set the countdown time to its own

interfacing of shift register with 8051 it is a simple demo code that how shift register can be interface with 8051 micro controller shift register is a serial in and parallel out register it has 2 pins clock and data pin these p

cy7c68013 是高速usb扩展芯片是开发板的原理图可以达到的速度是480m，usb2.0协议，内部包括一个8051内核的cpu-cy7c68013 high speed usb extension chip development board schematics can reach the speed of 480m, usb2.0 agreement, including a 8051 internal cpu