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發(fā)布:2023-11-28 02:28:00編輯:視頻君來(lái)源:視頻教程網(wǎng)
微軟雅黑的字體一般是Windows自帶的 如果沒(méi)有的話,直接下載一個(gè),跟裝軟件那樣,解壓安裝就好了 微軟雅黑字體怎么安裝?xp系統(tǒng) 下載好微軟雅黑的字體后 復(fù)制到系統(tǒng)盤windows/fonts文件夾 雅黑字體怎么安裝 有意思,我到處找怎么把雅黑換成宋體,你倒好,跟我相反,其實(shí)換了雅黑一點(diǎn)都不好,黑不溜秋的,我換過(guò),你試試:右鍵桌面,單擊屏幕分辨率,然后出來(lái)的是更改顯示器分辨率,下面有個(gè)放大和縮小字文本,單擊,出來(lái)控制面板主頁(yè),看左邊,單擊,設(shè)置自定義文本大小(DPI),然后把下面那個(gè)對(duì)勾去掉:(默認(rèn)為windows xp),然后點(diǎn)確定,再在右邊這里單擊 應(yīng)用,好,注銷,你的應(yīng)用軟件都是雅黑的了, 要想讓操作系統(tǒng)桌面文字也變成雅黑,單擊,控制面板,然后,外觀和個(gè)性化,再單擊字體,里面出來(lái)的都是字體設(shè)置,最后幾個(gè)有個(gè)是雅黑的,右鍵,安裝,(這個(gè)要管理員權(quán)限),如果你不是的話,那就把它拖到桌面上來(lái),右鍵用管理員打開(kāi),它就會(huì)安裝,就是雅黑的了!!
可能你是安裝了經(jīng)過(guò)修改的宋體,即把雅黑字體的文件名重命名為宋體的文件名。
進(jìn)入到字體文件夾,打開(kāi)宋體看看里面是否是雅黑字體。
如是,要想還原為宋體,有以下幾個(gè)辦法:
1.在安裝雅黑字體是,應(yīng)該有個(gè)安裝程序的,可到“添加或刪除程序”里找找,如果有,只要卸載掉就可以了。
2.如果沒(méi)有,可以去下載一些雅黑替換宋體的腳本,里面一般有卸載腳本的,運(yùn)行卸載腳本重啟既可。
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3.如果安裝了雙系統(tǒng)或有PE系統(tǒng),可以進(jìn)入到該系統(tǒng),先刪節(jié)原系統(tǒng)的宋體,把該系統(tǒng)的宋體(或下載),復(fù)制到原系統(tǒng)的字體文件夾里。(注意區(qū)分各個(gè)系統(tǒng)的字體文件夾)
話說(shuō)最近網(wǎng)絡(luò)虛擬化(Networking Virtualization,NV)和SDN真實(shí)熱得發(fā)燙,先談一下我個(gè)人的理解和看法。由于沒(méi)有實(shí)際玩過(guò)相應(yīng)的產(chǎn)品,所以也只是停留在理論階段,而且尚在學(xué)習(xí)中,有些地方難以理解甚至理解錯(cuò)誤,因此,特地來(lái)和大家交流一下。
早在2009年就出現(xiàn)了SDN(Software Defined Networking)的概念,但最近才開(kāi)始被眾人所關(guān)注,主要還是因?yàn)镚oogle跳出來(lái)表態(tài)其內(nèi)部數(shù)據(jù)中心所有網(wǎng)絡(luò)都開(kāi)始采用OpenFlow進(jìn)行控制,將OpenFlow從原本僅是學(xué)術(shù)性的東西瞬間推到了商用領(lǐng)域。第二個(gè)勁爆的消息就是VMWare大手筆12.6個(gè)億$收掉了網(wǎng)絡(luò)虛擬化公司Nicira。
SDN只是一個(gè)理念,歸根結(jié)底,她是要實(shí)現(xiàn)可編程網(wǎng)絡(luò),將原本封閉的網(wǎng)絡(luò)設(shè)備控制面(Control Plane)完全拿到“盒子”外邊,由集中的控制器來(lái)管理,而該控制器是完全開(kāi)放的,因此你可以定義任何想實(shí)現(xiàn)的機(jī)制和協(xié)議。比如你不喜歡交換機(jī)/路由器自身所內(nèi)置的TCP協(xié)議,希望通過(guò)編程的方式對(duì)其進(jìn)行修改,甚至去掉它,完全由另一個(gè)控制協(xié)議取代也是可以的。正是因?yàn)檫@種開(kāi)放性,使得網(wǎng)絡(luò)的發(fā)展空間變?yōu)闊o(wú)限可能,換句話說(shuō),只有你想不到,沒(méi)有你做不到。
那SDN為什么會(huì)和NV扯上關(guān)系呢?其實(shí)他們之間并沒(méi)有因果關(guān)系,SDN不是為實(shí)現(xiàn)網(wǎng)絡(luò)虛擬化而設(shè)計(jì)的,但正式因?yàn)镾DN架構(gòu)的先進(jìn)性,使得網(wǎng)絡(luò)虛擬化的任務(wù)也得以實(shí)現(xiàn)。很多人(包括我自己)在最初接觸SDN的時(shí)候,甚至認(rèn)為她就是NV,但實(shí)際上SDN的目光要遠(yuǎn)大得多,用句數(shù)學(xué)術(shù)語(yǔ)來(lái)說(shuō)就是“NV包含于SDN,SDN包含NV”。
再來(lái)看看NV,為什么NV會(huì)如此火爆,歸根結(jié)底還是因?yàn)樵朴?jì)算的崛起。服務(wù)器/存儲(chǔ)虛擬化為云計(jì)算提供了基礎(chǔ)架構(gòu)支撐,也已經(jīng)有成熟的產(chǎn)品和解決方案,但你會(huì)發(fā)現(xiàn)一個(gè)問(wèn)題,即便如此,虛擬機(jī)的遷移依然不夠靈活,例如VMWare vMotion可以做到VM在線遷移,EMC VPLEX可以做到雙活站點(diǎn),但虛擬機(jī)的網(wǎng)絡(luò)(地址、策略、安全、VLAN、ACL等等)依然死死地與物理設(shè)備耦合在一起,即便虛擬機(jī)從一個(gè)子網(wǎng)成功地遷移到另一個(gè)子網(wǎng),但你依然需要改變其IP地址,而這一過(guò)程,必然會(huì)有停機(jī)。另外,很多策略通常也是基于地址的,地址改了,策略有得改,所以依然是手動(dòng)活,繁雜且易出錯(cuò)。所以說(shuō),要實(shí)現(xiàn)Full VM Migration,即不需要更改任何現(xiàn)有配置,把邏輯對(duì)象(比如IP地址)與物理網(wǎng)絡(luò)設(shè)備去耦(decouple)才行。這是一個(gè)舉例,總而言之,目的就是實(shí)現(xiàn)VM Migration Anywhere within the DataCenter non-disruptively,尤其是在云這樣的多租戶(Multi-tanency)環(huán)境里,為每一個(gè)租戶提供完整的網(wǎng)絡(luò)視圖,實(shí)現(xiàn)真正的敏捷商務(wù)模型,才能吸引更多人投身于云計(jì)算。
SDN不是網(wǎng)絡(luò)虛擬化的唯一做法,Network overly(mac in mac, ip in ip)的方式也是現(xiàn)在很多公司實(shí)際在使用的,比如Microsoft NVGRE、Cisco/VMWare VXLAN、Cisco OTV、Nicira STT等。事實(shí)上overly network似乎已經(jīng)成為NV實(shí)現(xiàn)的標(biāo)準(zhǔn)做法,SDN模型下的NV實(shí)現(xiàn)目前更多的是在學(xué)術(shù)、研究領(lǐng)域。新技術(shù)總是伴隨大量的競(jìng)爭(zhēng)者,都想在此分一杯羹,甚至最后成為標(biāo)準(zhǔn)。好戲才剛剛上演,相信會(huì)越發(fā)精彩。
個(gè)人覺(jué)得這是一個(gè)非常有意思的話題,希望和大家交流心得,互相學(xué)習(xí).
NV的目標(biāo)就是如何呈現(xiàn)一個(gè)完全的網(wǎng)絡(luò)給云環(huán)境中的每一個(gè)租戶,租戶可能會(huì)要求使用任何其希望使用的IP地址段,任何拓?fù)洌?dāng)然更不希望在遷移至公共云的情況下需要更改其原本的IP地址,因?yàn)檫@意味著停機(jī)。所以,客戶希望有一個(gè)安全且完全隔離的網(wǎng)絡(luò)環(huán)境,保證不會(huì)與其他租戶產(chǎn)生沖突。既然vMotion之類的功能能夠讓虛擬機(jī)在云中自由在線漂移,那網(wǎng)絡(luò)是否也能隨之漂移呢?這里簡(jiǎn)單介紹下微軟的Hyper-v networking virtualization,到不是因?yàn)榧夹g(shù)有多先進(jìn),只不過(guò)他的實(shí)現(xiàn)細(xì)節(jié)比較公開(kāi),而其它公司的具體做法相對(duì)封閉,難以舉例。
其實(shí)微軟的思路很簡(jiǎn)單,就是將原本虛擬機(jī)的二層Frame通過(guò)NVGRE再次封裝到 IP packet中進(jìn)行傳輸,使得交換機(jī)能夠通過(guò)識(shí)別NVGRE的Key字段來(lái)判斷數(shù)據(jù)包的最終目的地。這其實(shí)就是一個(gè)Network Overlay的做法,它將虛擬網(wǎng)絡(luò)與物理網(wǎng)絡(luò)進(jìn)行了分離。試想,公司A和公司B都遷移到公有云且就那么巧,他們的一些虛擬機(jī)連接到了同一個(gè)物理交換機(jī)上,現(xiàn)在的問(wèn)題是,他們各自的虛擬機(jī)原本使用的私有IP段是一樣的,如果沒(méi)有VLAN就會(huì)導(dǎo)致IP沖突。但現(xiàn)在看來(lái),這已經(jīng)不是問(wèn)題,因?yàn)樘摂M機(jī)之間的通信都要通過(guò)NVGRE的封裝,而新的IP包在物理網(wǎng)絡(luò)上傳輸時(shí)是走物理地址空間的,而物理地址空間是由云服務(wù)提供者所獨(dú)占的,因此不存在IP沖突的情況。
總結(jié)一下就是,這里的網(wǎng)絡(luò)虛擬化可以認(rèn)為是IP地址虛擬化,將虛擬網(wǎng)絡(luò)的IP與物理網(wǎng)絡(luò)完全分離,這樣做就可以避免IP沖突,跨子網(wǎng)在線遷移虛擬機(jī)的問(wèn)題,微軟的要求是:虛擬機(jī)可以在數(shù)據(jù)中心中任意移動(dòng),而客戶不會(huì)有任何感覺(jué),這種移動(dòng)能力帶來(lái)了極大的靈活性。
Software-defined networking (SDN) is an approach to computer networking which evolved from work done at UC Berkeley and Stanford University around 2008.[1] SDN allows network administrators to manage network services throughabstraction of lower level functionality. This is done by decoupling the system that makes decisions about where traffic is sent (the control plane) from the underlying systems that forwards traffic to the selected destination (the data plane). The inventors and vendors of these systems claim that this simplifies networking.[2]
SDN requires some method for the control plane to communicate with the data plane. One such mechanism, OpenFlow, is often misunderstood to be equivalent to SDN, but other mechanisms could also fit into the concept. The Open Networking Foundation was founded to promote SDN and OpenFlow, marketing the use of the term cloud computing before it became popular.
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One application of SDN is the infrastructure as a service (IaaS).
This extension means that SDN virtual networking combined with virtual compute (VMs) and virtual storage can emulate elastic resource allocation as if each such enterprise application was written like a Google or Facebook application. In the vast majority of these applications resource allocation is statically mapped in inter process communication (IPC). However if such mapping can be expanded or reduced to large (many cores) or small VMs the behavior would be much like one of the purpose built large Internet applications.
Other uses in the consolidated data-center include consolidation of spare capacity stranded in static partition of racks to pods. Pooling these spare capacities results in significant reduction of computing resources. Pooling the active resources increases average utilization.
The use of SDN distributed and global edge control also includes the ability to balance load on lots of links leading from the racks to the switching spine of the data-center. Without SDN this task is done using traditional link-state updates that update all locations upon change in any location. Distributed global SDN measurements may extend the cap on the scale of physical clusters. Other data-center uses being listed are distributed application load balancing, distributed fire-walls, and similar adaptations to original networking functions that arise from dynamic, any location or rack allocation of compute resources.
Other uses of SDN in enterprise or carrier managed network services (MNS) address the traditional and geo-distributed campus network. These environments were always challenged by the complexities of moves-adds-changes, mergers & acquisitions, and movement of users. Based on SDN principles, it expected that these identity and policy management challenges could be addressed using global definitions and decoupled from the physical interfaces of the network infrastructure. In place infrastructure on the other hand of potentially thousands of switches and routers can remain intact.
It has been noted that this "overlay" approach raises a high likelihood of inefficiency and low performance by ignoring the characteristics of the underlying infrastructure. Hence, carriers have identified the gaps in overlays and asked for them to be filled by SDN solutions that take traffic, topology, and equipment into account.[7]
SDN deployment models[edit]
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Symmetric vs asymmetric
In an asymmetric model, SDN global information is centralized as much as possible, and edge driving is distributed as much as possible. The considerations behind such an approach are clear, centralization makes global consolidation a lot easier, and distribution lowers SDN traffic aggregation-encapsulation pressures. This model however raises questions regarding the exact relationships between these very different types of SDN elements as far as coherency, scale-out simplicity, and multi-location high-availability, questions which do not come up when using traditional AS based networking models. In a Symmetrically distributed SDN model an effort is applied to increase global information distribution ability, and SDN aggregation performance ability so that the SDN elements are basically one type of component. A group of such elements can form an SDN overlay as long as there is network reachability among any subset.
Floodless vs flood-based
In a flood-based model, a significant amount of the global information sharing is achieved using well known broadcast and multicast mechanisms. This can help make SDN models more Symmetric and it leverages existing transparent bridging principles encapsulated dynamically in order to achieve global awareness and identity learning. One of the downsides of this approach is that as more locations are added, the load per location increases, which degrades scalability. In a FloodLess model, all forwarding is based on global exact match, which is typically achieved using Distributed Hashing and Distributed Caching of SDN lookup tables.
Host-based vs Network-centric
In a host-based model an assumption is made regarding use of SDN in data-centers with lots of virtual machines moving to enable elasticity. Under this assumption the SDN encapsulation processing is already done at the host HyperVisor on behalf of the local virtual machines. This design reduces SDN edge traffic pressures and uses "free" processing based on each host spare core capacity. In a NetworkCentric design a clearer demarcation is made between network edge and end points. Such an SDN edge is associated with the access of Top of Rack device and outside the host endpoints. This is a more traditional approach to networking that does not count on end-points to perform any routing function.
Some of the lines between these design models may not be completely sharp. For example in data-centers using compute fabrics "Big" hosts with lots of CPU cards perform also some of the TopOfRack access functions and can concentrate SDN Edge functions on behalf of all the CPU cards in a chassis. This would be both HostBased and NetworkCentric design. There may also be dependency between these design variants, for example a HostBased implementation will typically mandate an Asymmetric centralized Lookup or Orchestration service to help organize a large distribution. Symmetric and FloodLess implementation model would typically mandate in-network SDN aggregation to enable lookup distribution to a reasonable amount of Edge points. Such concentration relies on local OpenFlow interfaces in order to sustain traffic encapsulation pressures.[5] [6]
Emulex是融合網(wǎng)絡(luò)解決方案領(lǐng)域的全球領(lǐng)導(dǎo)者,致力于為數(shù)據(jù)中心內(nèi)的服務(wù)器、網(wǎng)絡(luò)和存儲(chǔ)設(shè)備提供企業(yè)級(jí)連接。
軟件定義:軟件是用戶與硬件之間的接口界面。用戶主要是通過(guò)軟件與計(jì)算機(jī)進(jìn)行交流。軟件是計(jì)算機(jī)系統(tǒng)設(shè)計(jì)的重要依據(jù)。為了方便用戶,為了使計(jì)算機(jī)系統(tǒng)具有較高的總體效用,在設(shè)計(jì)計(jì)算機(jī)系統(tǒng)時(shí),必須全局考慮軟件與硬件的結(jié)合,以及用戶的要求和軟件的要求。
數(shù)據(jù)庫(kù)軟件定義:用于數(shù)據(jù)管理的軟件系統(tǒng),具有信息存儲(chǔ)、檢索、修改、共享和保護(hù)的功能。目前流行的數(shù)據(jù)庫(kù)軟件有Access、Sybase、SQL server、ORACLE、Foxpro等,它們都屬于關(guān)系型數(shù)據(jù)庫(kù)軟件。
微軟雅黑或者times new roman一般報(bào)告或者商務(wù)用就這兩種,因?yàn)榛舅须娔X都有,不會(huì)導(dǎo)致拷貝過(guò)后字體無(wú)法顯示的問(wèn)題,還有就是除非有特殊用途,比如海報(bào)或者宣傳之類的,字體不需要太花里胡哨,正常能順利的閱讀就好。 一、copperplate Copperplate,來(lái)源于早期銅板印刷( engraved copies)。顧名思義,是銅板或者銅板印刷。Copperplate是英文書(shū)法字體的一種。 二、ming liu simsun 是微軟向華康購(gòu)買的中文繁體字型, 也是 Windows 使用者最習(xí)慣的電腦字。simsun.ttc 有兩個(gè) faces。 三、Arial Arial是一種無(wú)襯線TrueType字體,與多個(gè)Microsoft應(yīng)用程序一起分發(fā)。monotype設(shè)計(jì)的字體與helvetica的linotype競(jìng)爭(zhēng),作為一個(gè)更便宜的選擇。 四、Calibri Calibri是一種無(wú)襯線字體,最初發(fā)布于微軟Windows Vista中,亦為微軟Microsoft Office 2007套裝軟件的默認(rèn)字體。 五、Comic Sans Comic Sans是一個(gè)似手寫(xiě)的字體,由文生·康奈爾(Vincent Connare)設(shè)計(jì),并在1994年發(fā)布。從Windows 95之后,此字體就一直附帶在微軟的視窗系統(tǒng)里,已成微軟系統(tǒng)內(nèi)最常用字型之一。
字體下載通過(guò)點(diǎn)擊進(jìn)入瀏覽器,選擇合適的字體,進(jìn)入下載界面,點(diǎn)擊立即下載,點(diǎn)擊安裝即可。 工具/原料:聯(lián)想小新air14、windows10、百度12.21.0.12 1、打開(kāi)瀏覽器 點(diǎn)擊進(jìn)入電腦瀏覽器。 2、進(jìn)入字體下載界面 在搜索欄中搜索“免費(fèi)字體下載”,在出現(xiàn)的多個(gè)搜索結(jié)果中,選擇一個(gè)合適的結(jié)果,點(diǎn)擊進(jìn)入字體下載界面。 3、點(diǎn)擊立即下載 選擇一款自己喜歡的字體,點(diǎn)擊“立即下載”,進(jìn)入該字體的下載過(guò)程,等待期其下載完成。 4、點(diǎn)擊安裝 點(diǎn)擊“解壓”,在彈出的提示框中,點(diǎn)擊“安裝”即可。
原因是微軟雅黑字體被你刪除了,所以導(dǎo)致你看到的字顯示不出來(lái),因此就會(huì)出現(xiàn)小方塊。 解決方法一、微軟雅黑字體是系統(tǒng)常用的一款字體 如果卸載可能會(huì)導(dǎo)致部分使用該字體的文字無(wú)法顯示,所以需要重新安裝微軟雅黑字體。到網(wǎng)上下載微軟雅黑字體,然后安裝即可。安裝好之后打開(kāi)桌面上的計(jì)算機(jī),在地址欄上輸入c:\windows\fonts,按回車鍵。就會(huì)看到安裝好的字體了。 解決方法二、可以直接下載一個(gè)中文字庫(kù),因?yàn)镻S是外國(guó)的軟件,可能對(duì)于一些中文字體不兼容,下載一個(gè)中文字庫(kù)之后,大部分字體都能應(yīng)用于大部分的漢子,全部的字體包下載,也能盡可能避免小方塊的出現(xiàn)。
導(dǎo)致蘋果電腦字體模糊的原因:
1.屏幕上存在污垢沒(méi)有清理。
2.屏幕損壞。
3.眼睛疲勞或近視。
4.屏幕不是Retina屏幕。
解決方法如下:
1.使用布子沾上點(diǎn)水擦拭屏幕,注意不要造成劃痕,清理后再度觀察屏幕上的字體,看到字體清晰即可。
2.去售后更換屏幕。原裝正品保修期內(nèi)有質(zhì)量問(wèn)題直接換新,人為損壞的付費(fèi)維修,偽劣產(chǎn)品和人為拆卸不在保修范圍內(nèi),建議直接變賣設(shè)備(經(jīng)濟(jì)損失最低)。
3.休息一段時(shí)間后再試,或者佩戴眼鏡。
4.更換一臺(tái)Retina屏幕的蘋果電腦再試。Retina屏幕電腦可以到蘋果官網(wǎng)買到,尺寸、硬盤容量不限。
Retina顯示屏是最近兩年剛推出的高端顯示屏,而office for Mac目前只出到了2011版本,所以對(duì)于新屏幕不是適應(yīng)的那么完美,可以下載最新更新包14.3.6,支持 Retina 視網(wǎng)膜高分辨率顯示屏。 office 也在努力研制Mac系統(tǒng)的2016版本,拭目以待吧。 MacBook pro搭載的Retina顯示屏,“Retina”是一種顯示技術(shù),可以將把更多的像素點(diǎn)壓縮至一塊屏幕里,從而達(dá)到更高的分辨率并提高屏幕顯示的細(xì)膩程度。由摩托羅拉公司研發(fā)。最初該技術(shù)是用于Moto Aura上。這種分辨率在正常觀看距離下足以使人肉眼無(wú)法分辨其中的單獨(dú)像素。也被稱為視網(wǎng)膜顯示屏。 MacBook pro是蘋果筆記本系列中更專業(yè)的一款,相對(duì)于其他品牌的筆記本電腦,功能強(qiáng)大,外觀美觀,輕便攜帶,待機(jī)時(shí)間長(zhǎng),搭載蘋果OS X系統(tǒng),處理圖片、編程、剪輯等功能得心應(yīng)手,硬件上設(shè)計(jì)也十分人性化,鍵盤、鼠標(biāo)都能讓使用者感受到方便。