ITU-T G.729 Source code ITU-T G.729 Annex B ANSI-C Source Code
上传时间： 2014-01-03
上传用户：hasan2015
针对目前使用的RS232接口数字化B超键盘存在PC主机启动时不能设置BIOS，提出一种PS2键盘的设计方法。基于W78E052D单片机，采用8通道串行A/D转换器设计了8个TGC电位器信息采集电路，电位器位置信息以键盘扫描码序列形式发送，正交编码器信号通过XC9536XL转换为单片机可接收的中断信号，软件接收到中断信息后等效处理成按键。结果表明，在满足开机可设置BIOS同时，又可实现超声特有功能，不需要专门设计驱动程序，接口简单，成本低。 Abstract: Aiming at the problem of the digital ultrasonic diagnostic imaging system keyboard with RS232 interface currently used couldn?蒺t set the BIOS when the PC boot， this paper proposed a design method of PS2 keyboards. Based on W78E052D microcontroller，designed eight TGC potentiometers information acquisition circuit with 8-channel serial A/D converter， potentiometer position information sent out with keyboard scan code sequentially.The control circuit based on XC9536 CPLD is used for converting the mechanical actions of the encoders into the signals that can be identified by the MCU， software received interrupt information and equivalently treatmented as key. The results show that the BIOS can be set to meet the boot， ultrasound specific functionality can be achieved at the same time， it does not require specially designed driver，the interface is simple and low cost.
上传时间： 2013-10-10
上传用户：asdfasdfd
This directory contains the 8051 firmware Vend_Ax source code for the Anchor Chips EZ-USB chip.
标签： directory the contains firmware
上传时间： 2014-01-07
上传用户：xjz632
This directory contains the 8051 firmware frameworks source code for the Anchor Chips EZ-USB FX2 chip.
标签： frameworks directory the contains
上传时间： 2014-01-11
上传用户：it男一枚
cypress usb mcu monitor software source code
标签： software cypress monitor source
上传时间： 2014-01-26
上传用户：Shaikh
CYPRESS USB bulk transfer speed test source code
标签： transfer CYPRESS source speed
上传时间： 2014-01-26
上传用户：kr770906
It is driver source code for IDE harddisk and used to learn IDE interface and file system.
标签： IDE and interface harddisk
上传时间： 2014-01-04
上传用户：gaojiao1999
usb to rs232 converter source code
上传时间： 2014-08-09
上传用户：redmoons
支持WINCE5.0 INTEL PXA 270 平台的USB 802.11 B/G 网卡驱动(QCOM产品)
上传时间： 2013-12-31
上传用户：bruce
USB source code of Vxworks 5.6. It has device and the host stack.
标签： Vxworks source device stack
上传时间： 2014-01-27
上传用户：dapangxie
