針對目前使用的RS232接口數(shù)字化B超鍵盤存在PC主機啟動時不能設置BIOS，提出一種PS2鍵盤的設計方法。基于W78E052D單片機，采用8通道串行A/D轉(zhuǎn)換器設計了8個TGC電位器信息采集電路，電位器位置信息以鍵盤掃描碼序列形式發(fā)送，正交編碼器信號通過XC9536XL轉(zhuǎn)換為單片機可接收的中斷信號，軟件接收到中斷信息后等效處理成按鍵。結(jié)果表明，在滿足開機可設置BIOS同時，又可實現(xiàn)超聲特有功能，不需要專門設計驅(qū)動程序，接口簡單，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.
上傳時間： 2013-10-10
上傳用戶：asdfasdfd
CAN－bus 規(guī)范V2.0 版本 這本CAN 規(guī)范技術(shù)規(guī)范由兩部分組成： • A 部分：CAN 的報文格式說明（按CAN1.2 規(guī)范定義）。 • B 部分：標準格式和擴展格式的說明。
上傳時間： 2015-06-04
上傳用戶：天誠24
LCD DRIVER AF-128 B
上傳時間： 2014-12-22
上傳用戶：851197153
for wince samsung 2k/b nandflash driver
標簽： nandflash samsung driver wince
上傳時間： 2014-01-07
上傳用戶：gaojiao1999
羅馬尼亞克魯日工程大學Mircea Dă bâ can, PhD提供的示波器開發(fā)全文擋及C,VHDL代碼.
上傳時間： 2016-03-07
上傳用戶：yzy6007
This a linux device driver for Ralink RT2500USB b/g WLAN Card. This driver implements basic 802.11 function. Infrastructure and Ad-hoc mode with open or shared or wpapsk or wpa2psk authentication method. WEP-40 and WEP-104 or tkip or aes encryption.
標簽： driver This implements Ralink
上傳時間： 2016-03-10
上傳用戶：cc1015285075
該程序用以查找任意兩個整數(shù)之間的所有素數(shù)。 Prime number finder can find all primes between a and b and will write the results to the file PRIMES.TXT
上傳時間： 2014-01-14
上傳用戶：cccole0605
hilon B協(xié)議編程，已在電力上CAN總線系統(tǒng)上應用，開發(fā)環(huán)境16位單片機
上傳時間： 2014-11-27
上傳用戶：獨孤求源
This project attempts to implement a Database using B+Tree. The project has developed a DATABASE SYSTEM with lesser memory consumption. Its API includes simple SQL Statements and the output is displayed on the screen. Certain applications for which several features of existing databases like concurrency control, transaction management, security features are not enabled. B+Trees can be used as an index for factor access to the data. Help facility is provided to know the syntax of SQL Statements.
標簽： project implement developed Database
上傳時間： 2013-12-25
上傳用戶：semi1981
If we have two individually sorted vectors "a" and "b" but they are not sorted with respect to each other and we want to merge them into vector "c" such that "c" is also a sorted vector. Then c=mergesorted(a,b) can be used.
標簽： sorted individually respect vectors
上傳時間： 2015-09-23
上傳用戶：comua
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