对于微软来说,2012年是比较特殊的一年,因为微软放弃了单纯向各大硬件厂商提供软件产品,而再次以硬件商的身份推出了Surface平板电脑。在过去的这一年中,Surface平板电脑整体表现虽然不尽人意,但微软依然坚信它能有更好的表现,于是Surface 2和Surface Pr
对于微软来说,2012年是比较特殊的一年,因为微软放弃了单纯向各大硬件厂商提供软件产品,而再次以硬件商的身份推出了Surface平板电脑。在过去的这一年中,Surface平板电脑整体表现虽然不尽人意,但微软依然坚信它能有更好的表现,于是Surface 2和Surface Pro 2来了。
微软是于北京时间9月23日晚10点30分召开的发布会,在发布会上微软正式对外发布了Surface第二代产品:Surface 2和Surface Pro 2。
Surface 2
Surface 2即是Surface RT的第二代产品,它运行Windows RT 8.1的系统,搭载了全新处理器、1080P IPS屏幕、蓝牙4.0、USB3.0和miniDP接口,Surface一共分为2个版本,分别是32G和64G,最低从449美元起售(税前约合人民币2748元)。
Surface Pro 2
Surface 2 Pro搭载了Windows 8.1 Pro,使用了英特尔Haswell处理器,使得图形性能和处理能力得到提升的同时,续航能力也从4小时提高到了7小时,续航时间提升75%,其它硬件配置则是10.6英寸屏幕、1080P IPS屏幕,此外Surface Pro机身容量一共有4个版本,分别是64G、128G、256G和512G,其中需要指出的是64G和128G版本配备的是4G内存,而256和512G版本则配备的是8G内存,据悉第二代Surface Pro将从899美元起售(税前约合人民币5441元)。
键盘增加背光,方便暗光下使用
更多颜色的键盘
Docking Station扩展底座
拥有这个底座,你就拥有HDMI接口、以太网接口和USB接口等
专为DJ打造的组件
DJ的应用程序
除此之外,微软还发布了Power Cover供电键盘、多颜色的Type Cover 2、Docking Station扩展底座和专为DJ打造的专属组件。
以上新品,将会于10月22日正式上市,而预订则可以从北京时间9月24日晚8点开始。

MySQL processes data replication through three modes: asynchronous, semi-synchronous and group replication. 1) Asynchronous replication performance is high but data may be lost. 2) Semi-synchronous replication improves data security but increases latency. 3) Group replication supports multi-master replication and failover, suitable for high availability requirements.

The EXPLAIN statement can be used to analyze and improve SQL query performance. 1. Execute the EXPLAIN statement to view the query plan. 2. Analyze the output results, pay attention to access type, index usage and JOIN order. 3. Create or adjust indexes based on the analysis results, optimize JOIN operations, and avoid full table scanning to improve query efficiency.

Using mysqldump for logical backup and MySQLEnterpriseBackup for hot backup are effective ways to back up MySQL databases. 1. Use mysqldump to back up the database: mysqldump-uroot-pmydatabase>mydatabase_backup.sql. 2. Use MySQLEnterpriseBackup for hot backup: mysqlbackup--user=root-password=password--backup-dir=/path/to/backupbackup. When recovering, use the corresponding life

The main reasons for slow MySQL query include missing or improper use of indexes, query complexity, excessive data volume and insufficient hardware resources. Optimization suggestions include: 1. Create appropriate indexes; 2. Optimize query statements; 3. Use table partitioning technology; 4. Appropriately upgrade hardware.

MySQL view is a virtual table based on SQL query results and does not store data. 1) Views simplify complex queries, 2) Enhance data security, and 3) Maintain data consistency. Views are stored queries in databases that can be used like tables, but data is generated dynamically.

MySQLdiffersfromotherSQLdialectsinsyntaxforLIMIT,auto-increment,stringcomparison,subqueries,andperformanceanalysis.1)MySQLusesLIMIT,whileSQLServerusesTOPandOracleusesROWNUM.2)MySQL'sAUTO_INCREMENTcontrastswithPostgreSQL'sSERIALandOracle'ssequenceandt

MySQL partitioning improves performance and simplifies maintenance. 1) Divide large tables into small pieces by specific criteria (such as date ranges), 2) physically divide data into independent files, 3) MySQL can focus on related partitions when querying, 4) Query optimizer can skip unrelated partitions, 5) Choosing the right partition strategy and maintaining it regularly is key.

How to grant and revoke permissions in MySQL? 1. Use the GRANT statement to grant permissions, such as GRANTALLPRIVILEGESONdatabase_name.TO'username'@'host'; 2. Use the REVOKE statement to revoke permissions, such as REVOKEALLPRIVILEGESONdatabase_name.FROM'username'@'host' to ensure timely communication of permission changes.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

SublimeText3 Chinese version
Chinese version, very easy to use

Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

SublimeText3 Linux new version
SublimeText3 Linux latest version

SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.
