om1 vs om2

JavaScript Specifies that event handlers consist of three ways:(1):D OM0 level event handlersSuch as:The code is as follows:var Btn=document.getelementbyid ("Mybtn"); Get a reference to the buttonBtn.onclick=function () {Alert (' clicked ');alert (this.id); MybtnEvent handlers that are added in this manner are processed during the bubbling phase of the event flow.Delete the event handlers specified by the DOM0-level method:Btn.onclick=null; To delete an event handler}(2):D

; // errorOpen_modes om = (open_modes) 1;Int t = open_modes: input;Int k = om;Cout Open_modes om2 = (open_modes) 4;Cout }How to print enumeration elements in a loop Use the values method of Enumeration type to retrieve all enumeration items.The following is an example.Public class EnumTest {Enum Country {China, America, and Japan;}Public static void main (String [] args ){For (Country country: Country. values ()){System. err. println (country );}}}==

From Neeaos Blog In Windows, the following words cannot be used to name files/folders, including "aux ", "c ++ om1" "com2" "prn" "con" and "nul", but such folders can be created in cmd. You can use the copy command to implement the following: Such files cannot be accessed through the gui, for example: However, this file can still be parsed through IIS: So can I use a program to read it? So I tested it and created a project with VS2003. The Code is

interface is simple, stable, non-bit inversion, and bad blocks. It is often used to store key data, nand flash is often used to store large data volumes. In 2440, the hardware switch is used to set OM0 to Nand start or Nor start, as shown in: Specific OM0 parameters are as follows, where 2440 of OM1 pins are grounded by default For nand boot: the starting 4KB of nand flash will be automatically loaded into the 2440 built-in SRAM cache so that you c

0 principle 0.1 where the clock originatesThe so-called clock, is the voltage level change, only the constant 0,1 alternating change, the CPU can be driven to run. The s3c2440 supports a variety of clock sources, which are selected by the CPU pins OM3 and OM3. For the QT2440 board, OM3 and OM2 are directly grounded, which means that the clock source from the pin XTIPLL and XTOPLL, the two pins on the core board of TQ2440 is connected to a 12MHz crysta

. Features: The test parameters include "loss and length" indicators, and the test results are judged as "pass/fail. However, the first-class test only cares about whether the total attenuation value of the optical fiber link meets the requirements, and does not care about the quality of the link that may affect the bit error rate connection points (connectors, splices, jumpers, etc, therefore, the primary target of the Integrated Wiring System test is the low-speed optical fiber cabling Link (G

test submission Job, like the document, is called Joe [Root@com2 mr]# useradd Joe [Root@com2 mr]# passwd Joe [Root@com2 mr]# su Joe [joe@com2 mr]$ Export hadoop_mapred_home=/ usr/lib/hadoop-mapreduce [joe@com2 mr]# sudo-u hdfs hadoop fs-mkdir/user/joe [joe@com2 mr]# sudo-u HDFs Hadoop fs-cho WN Joe/user/joe [joe@com2 mr]$ hadoop fs-mkdir input [joe@com2 mr]$ hadoop fs-put/etc/hadoop/conf/*.xml input [joe@c Om2 mr]$ Hadoop fs-ls input Found 4 items-r

center All-weather uninterrupted record, automatic generation of network system complete network fault diagnosis document. 5. 2 Cabling Intelligent Management System content In the prophase construction and operation Maintenance management of the integrated wiring, the data and information related to the wiring system mainly include: (1) Equipment and cable use, use of departments, LAN topology, information transmission rate, terminal equipment configuration status. (2) Hardware number, col

In the early stage of operation, managers generally stick to the luck of "connecting" and do not pay much attention to the cabling of the data center. As a result, network connection errors are frequently caused, which may also affect energy consumption and heat dissipation, they still don't know why. With the release of the network transmission standard 10 Gbit/s-T for 100-meter channel transmission. Internationally recognized Cabling Standards have defined the next generation of six types of c

Cables can be used as data and power pipelines for about 15 years, which means that the cabling system has a huge and long-term impact in your storage environment. This article describes whether to select optical fiber cables or copper cables. How long will you use a data storage system? From a positive perspective, it usually takes six years. The average service life of the server is four years. What about the data center cabling system? Cables can be used as data and power pipelines for abo

or write operation. When no operation is performed, the data must be refreshed by using the arn command at intervals to prevent data loss.The connection circuit of SDRAM is provided: 3.3 flash memoryNor and NAND are two major non-loss flash technologies on the market.Nor features in-chip execution (xip, execute in place), that is, applications can run directly in flash memory without having to read the code into system Ram. Nor transmission efficiency is very high, in 1 ~ 4 MB of small capacity

ARM processor memory allocation details The Samsung 2440 processor provides 1 GB access to external storage space, divided into 8The size of each bank is 128 MB. The memory access bus width from bank1 to bank7 is programmable, which can be 8bit, 16bit, 32bit, and bank0 can only be 16bit/32bit. Bank0 to bank5 only have Rom and SRAM interfaces, which can be used for norflash and SRAM. The names of the selected eight pins are ngcsn (nThe value range is 0-7) Startup Mode: There are two startup mo

store the code. norflash and SDRAM can directly run the code)4: S3C2440 has a total of 8 memory banksSix memory banks can be used as Rom or SRAMIn addition to Rom or SRAM, the two banks left behind can also use SDRAM (different memory read/write methods)The starting address of the seven banks is fixed.There is also a flexible bank memory address, and the bank size can also be changed5: S3C2440 supports two startup modes: NAND and non-NAND (nor flash here ).The specific method depends on the two

to the file being operated by sed. [Root @ jie1 ~] # Cat myfile # file content hello worldi am lihow are youli [root @ jie1 ~] # Cat test # Ethernet # BOOTPROTO = "dhcp" HWADDR = "00: 0C: 29: 90: 79: 78 "ONBOOT =" yes "IPADDR = 172.16.10.12NETMASK = 255.255.0.0 [root @ jie1 ~] # Sed-I '/Ethernet/r myfile' test # Read the content of another file in the row matching Ethernet, the content of the read file will be inserted into the line matching the Ethernet. [root @ jie1 ~] # Cat test # view the l

No, it's too troublesome. Use text to record it for future query. The coordinate system M1 is rotated by E, while m2 is rotated by M1, and so on M3. Then, the coordinate m in E is rotated by the coordinate system. The final coordinate is m1m2m3... M4 * m, and m is the vector. M1, M2, M3, and M4 are rotating matrices. Ex = om M1x = om1 M1 is the coordinate of E after rotation M1m2 just converted the vector represented by m2 to the coordinates

Cabling System MPO cabling system is a good choice for optical fiber applications. MPO trunk connection cables use factory-connected and tested high-density MPO splices, each with 12-core optical fiber cables ). It also provides pluggable MPO splices, optical fibers ranging from 10 meters to 300 meters, OM1/2/3 or OS1 type optical fibers, and MPO module plug-in boxes. MPO fan-type optical Jumper can realize from connecting optical fiber to each core

"blzbntbts0000005d"4) refer to Http://www.baidu.com/link?url= 233vh5krfincv4pfmxes20aqhxpo-fap5dfbn6djrjjir17kmyzasdnbt63yahgpen9kvgdhuxp9h-5sn5znylcrszce5u4i8eq4tdlglj4tcpgcbxyzavaz0 Om1-epp5xd3iucao6z7h12t_b-qc9hizvjkwpvfl0b0sflrr_kwd=eqid=a4738f6500059b030000000555dc76f65) Try to repair the "secondary Logon" service by referring to the link in 4, (my service can start normally, but there is still a problem). The repair process is: Create a new fil

stored program, Norflash storage data.There is a dedicated storage controller for storage space 2440,　Generally we put Norflash, Nandflash are connected with nGCS0, and then choose OM0, OM1 choose which way to start, if you choose Norflash our code will start from the Norflash 0 address to execute, If you choose Nandflash our code will be the processor will nandflash the first 4k copy to the inside of the chip 4k RAM, and then the program in the inte

In the early stages of operation, managers generally hold the "connectivity can" luck, the computer room wiring does not attach importance to the result of frequent network connection errors, but also may affect the energy dissipation, and at this time, they do not know why. Current standards and trends of wiring products With the network transmission standard 10G BASS-T release, to meet the 100 meters of channel transmission. Internationally recognized cabling standards have already defined t

Supervision Center; Store and load the break-in. In a data center, the typical computer room/host room space area is divided into: Total wiring Area (MDA), placing routers, backbone cables, Lan/san switches, PBX switchboard, wiring racks; Horizontal wiring Area (HDA), the placement of LAN/SAN/KVM switches, wiring racks; Regional wiring Area (ZDA), placement of had and EDA in the middle of the extension of the area over the Line box/integration point; Equipment wiring Area (EDA), placement