-
KVM (for Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware. It consists of a loadable kernel module (kvm.ko) and a userspace component.
Using KVM, one can run multiple virtual machines running unmodified Linux or Windows images. Each virtual machine has private virtualized hardware: a network card, disk, graphics adapter, etc.
The kernel component of KVM is included in mainline Linux, and will appear in Linux 2.6.20.
KVM is open source software.
標(biāo)簽：
virtualization
Kernel-based
for
hardware
上傳時間：
2015-08-20
上傳用戶：lijianyu172
-
php開發(fā)的行業(yè)搜索系統(tǒng)！！！
2. 安裝
------------
a. 解壓程序rar文件，用二進制方式上傳到你的網(wǎng)站的根目錄或某一目錄下
注意：一定要將ftp上傳工具設(shè)置為二進制方式，再上傳程序文件
b. unix或linux服務(wù)器下, 將以下文件屬性改為：666 (或777)
- function/base_info.php
- function/emphasis_info.php
- function/admin_pass_info.php
- function/search_info.php
- function/userfield_info.php
- template/default/目錄下的所有html文件
c. unix或linux服務(wù)器下, 將upfile/目錄屬性改為：777
d. 建立一個mysql數(shù)據(jù)庫，并記下用戶名和密碼，以便安裝時使用
e. 進入安裝目錄http://www.your_website.com/install/, 自動運行安裝程序
f. 安裝完成后，要求刪除安裝目錄install/及其下文件
g. 后臺管理目錄http://www.your_website.com/adiministrator/
h. 可修改adiministrator/目錄為你希望的獨特的名字
標(biāo)簽：
a.
php
搜索
上傳時間：
2014-11-29
上傳用戶：小草123
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This directory builds the Tape class driver for Microsoft® Windows® Server 2003. The class driver implements device-independent support, and exports support routines for device-specific tape miniclass drivers. It handles device-independent tape requests and calls the tape minidriver routines to process device-specific functions. Class driver splits transfer requests, when necessary, to fit the maximum transfer size for the underlying host bus adapter. It also provides device-independent, tape-specific error handling, and calls the tape miniclass driver s device-specific error handling routines.
標(biāo)簽：
class
Microsoft
directory
reg
上傳時間：
2013-12-09
上傳用戶：huangld
-
The XML Toolbox converts MATLAB data types (such as double, char, struct, complex, sparse, logical) of any level of nesting to XML format and vice versa.
For example,
>> project.name = MyProject
>> project.id = 1234
>> project.param.a = 3.1415
>> project.param.b = 42
becomes with str=xml_format(project, off )
"<project>
<name>MyProject</name>
<id>1234</id>
<param>
<a>3.1415</a>
<b>42</b>
</param>
</project>"
On the other hand, if an XML string XStr is given, this can be converted easily to a MATLAB data type or structure V with the command V=xml_parse(XStr).
標(biāo)簽：
converts
Toolbox
complex
logical
上傳時間：
2016-02-12
上傳用戶：a673761058
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This document provides information that supplements the Silicon Labs Interrupt Driver, which
includes instructions for installing the driver and information for building the driver.
標(biāo)簽：
information
supplements
Interrupt
document
上傳時間：
2016-09-06
上傳用戶：hn891122
-
Mac OS X for Java Geeks delivers a complete and detailed look at the Mac OS X platform, geared specifically at Java developers. Programmers using the 10.2 (Jaguar) release of Mac OS X, and the new JDK 1.4, have unprecedented new functionality available to them. Whether you are a Java newbie, working your way through Java Swing and classpath issues, or you are a Java guru, comfortable with digital media, reflection, and J2EE, this book will teach you how to get around on Mac OS X. You ll also get the latest information on how to build applications that run seamlessly, and identically, on Windows, Linux, Unix, and the Mac.
標(biāo)簽：
Mac
delivers
complete
detailed
上傳時間：
2017-04-08
上傳用戶：小碼農(nóng)lz
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特點： 精確度0.1%滿刻度 可作各式數(shù)學(xué)演算式功能如:A+B/A-B/AxB/A/B/A&B(Hi or Lo)/|A|/ 16 BIT類比輸出功能 輸入與輸出絕緣耐壓2仟伏特/1分鐘(input/output/power) 寬范圍交直流兩用電源設(shè)計 尺寸小,穩(wěn)定性高
標(biāo)簽：
微電腦
數(shù)學(xué)演算
隔離傳送器
上傳時間：
2014-12-23
上傳用戶：ydd3625
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Piezoelectric motors are used in digital cameras for autofocus,zooming and optical image stabilization. Theyare relatively small, lightweight and effi cient, but theyalso require a complicated driving scheme. Traditionally,this challenge has been met with the use ofseparatecircuits, including a step-up converter and an oversizedgeneric full-bridge drive IC. The resulting high componentcount and large board space are especially problematicin the design of cameras for ever shrinking cell phones.The LT®3572 solves these problems by combining astep-up regulator and a dual full-bridge driver in a 4mm× 4mm QFN package. Figure 1 shows a typical LT3572Piezo motor drive circuit. A step-up converter is usedto generate 30V from a low voltage power source suchas a Li-Ion battery or any input power source within thepart’s wide input voltage range of 2.7V to 10V. The highoutput voltage of the step-up converter, adjustable upto 40V, is available for the drivers at the VOUT pin. Thedrivers operate in a full-bridge fashion, where the OUTAand OUTB pins are the same polarity as the PWMA andPWMB pins, respectively, and the OUTA and OUTB pinsare inverted from PWMA and PWMB, respectively. Thestep-up converter and both Piezo drivers have their ownshutdown control. Figure 2 shows a typical layout
標(biāo)簽：
436
DN
全橋
壓電
上傳時間：
2013-11-18
上傳用戶：hulee
-
/*--------- 8051內(nèi)核特殊功能寄存器 -------------*/
sfr ACC = 0xE0; //累加器
sfr B = 0xF0; //B 寄存器
sfr PSW = 0xD0; //程序狀態(tài)字寄存器
sbit CY = PSW^7; //進位標(biāo)志位
sbit AC = PSW^6; //輔助進位標(biāo)志位
sbit F0 = PSW^5; //用戶標(biāo)志位0
sbit RS1 = PSW^4; //工作寄存器組選擇控制位
sbit RS0 = PSW^3; //工作寄存器組選擇控制位
sbit OV = PSW^2; //溢出標(biāo)志位
sbit F1 = PSW^1; //用戶標(biāo)志位1
sbit P = PSW^0; //奇偶標(biāo)志位
sfr SP = 0x81; //堆棧指針寄存器
sfr DPL = 0x82; //數(shù)據(jù)指針0低字節(jié)
sfr DPH = 0x83; //數(shù)據(jù)指針0高字節(jié)
/*------------ 系統(tǒng)管理特殊功能寄存器 -------------*/
sfr PCON = 0x87; //電源控制寄存器
sfr AUXR = 0x8E; //輔助寄存器
sfr AUXR1 = 0xA2; //輔助寄存器1
sfr WAKE_CLKO = 0x8F; //時鐘輸出和喚醒控制寄存器
sfr CLK_DIV = 0x97; //時鐘分頻控制寄存器
sfr BUS_SPEED = 0xA1; //總線速度控制寄存器
/*----------- 中斷控制特殊功能寄存器 --------------*/
sfr IE = 0xA8; //中斷允許寄存器
sbit EA = IE^7; //總中斷允許位
sbit ELVD = IE^6; //低電壓檢測中斷控制位
8051
標(biāo)簽：
80C51
特殊功能寄存器
地址
上傳時間：
2013-10-30
上傳用戶：yxgi5
-
TLC2543是TI公司的12位串行模數(shù)轉(zhuǎn)換器，使用開關(guān)電容逐次逼近技術(shù)完成A/D轉(zhuǎn)換過程。由于是串行輸入結(jié)構(gòu)，能夠節(jié)省51系列單片機I/O資源；且價格適中，分辨率較高，因此在儀器儀表中有較為廣泛的應(yīng)用。
TLC2543的特點
（1）12位分辯率A/D轉(zhuǎn)換器；
（2）在工作溫度范圍內(nèi)10μs轉(zhuǎn)換時間；
（3）11個模擬輸入通道；
（4）3路內(nèi)置自測試方式；
（5）采樣率為66kbps；
（6）線性誤差±1LSBmax；
（7）有轉(zhuǎn)換結(jié)束輸出EOC；
（8）具有單、雙極性輸出；
（9）可編程的MSB或LSB前導(dǎo)；
（10）可編程輸出數(shù)據(jù)長度。
TLC2543的引腳排列及說明
TLC2543有兩種封裝形式：DB、DW或N封裝以及FN封裝，這兩種封裝的引腳排列如圖1，引腳說明見表1
TLC2543電路圖和程序欣賞
#include<reg52.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
sbit clock=P1^0; sbit d_in=P1^1;
sbit d_out=P1^2;
sbit _cs=P1^3;
uchar a1,b1,c1,d1;
float sum,sum1;
double sum_final1;
double sum_final;
uchar duan[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
uchar wei[]={0xf7,0xfb,0xfd,0xfe};
void delay(unsigned char b) //50us
{
unsigned char a;
for(;b>0;b--)
for(a=22;a>0;a--);
}
void display(uchar a,uchar b,uchar c,uchar d)
{
P0=duan[a]|0x80;
P2=wei[0];
delay(5);
P2=0xff;
P0=duan[b];
P2=wei[1];
delay(5);
P2=0xff;
P0=duan[c];
P2=wei[2];
delay(5);
P2=0xff;
P0=duan[d];
P2=wei[3];
delay(5);
P2=0xff;
}
uint read(uchar port)
{
uchar i,al=0,ah=0;
unsigned long ad;
clock=0;
_cs=0;
port<<=4;
for(i=0;i<4;i++)
{
d_in=port&0x80;
clock=1;
clock=0;
port<<=1;
}
d_in=0;
for(i=0;i<8;i++)
{
clock=1;
clock=0;
}
_cs=1;
delay(5);
_cs=0;
for(i=0;i<4;i++)
{
clock=1;
ah<<=1;
if(d_out)ah|=0x01;
clock=0;
}
for(i=0;i<8;i++)
{
clock=1;
al<<=1;
if(d_out) al|=0x01;
clock=0;
}
_cs=1;
ad=(uint)ah;
ad<<=8;
ad|=al;
return(ad);
}
void main()
{
uchar j;
sum=0;sum1=0;
sum_final=0;
sum_final1=0;
while(1)
{
for(j=0;j<128;j++)
{
sum1+=read(1);
display(a1,b1,c1,d1);
}
sum=sum1/128;
sum1=0;
sum_final1=(sum/4095)*5;
sum_final=sum_final1*1000;
a1=(int)sum_final/1000;
b1=(int)sum_final%1000/100;
c1=(int)sum_final%1000%100/10;
d1=(int)sum_final%10;
display(a1,b1,c1,d1);
}
}
標(biāo)簽：
2543
TLC
上傳時間：
2013-11-19
上傳用戶：shen1230
