Standard Parallel Port(SPP) ( SPP ) is one of the most usable interface circuits on computer. 并行打印口(SPP)是计算机中最常用的接口之一,经功能扩展后成为增强并行口。
Using PC standard parallel port to realize serial ISP of AVR, if pin / RESET was connected to the ground, the SPI bus could be used to realize the serial programming. 使用PC标准并口实现AVR单片机串行ISP时,若引脚/RESET接地,则可利用SPI总线实现串行编程。
The Enhanced Parallel Port ( EPP ) is a protocol that can be compatible with the standard parallel port and can complete the data transmission in two directions. But as for the transmission efficiency of large blocks of data, this protocol can't meet the demand. 增强型并行端口(EPP)是一种与标准并行口兼容能够完成双向数据传输的协议,但是此协议在大块数据传输中效率难以达到要求。
Enhanced parallel port is compatible with standard parallel port, and it can realize high speed bidirectional communication through data line. 增强型并行口(EPP)是与标准并行口(SSP)兼容的,能通过数据线双向传送数据的高速并行接口。
The basic substance of the IEEE 1284 standard of PC parallel port is introduced from engineering practical angle. 从工程实用的角度介绍了PC机并行端口IEEE1284标准的基本内容。