首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
In the past few years, personal computers (PCs) have become better, stronger and faster but so have the bits and pieces you plug
In the past few years, personal computers (PCs) have become better, stronger and faster but so have the bits and pieces you plug
admin
2010-06-18
57
问题
In the past few years, personal computers (PCs) have become better, stronger and faster but so have the bits and pieces you plug into them.
Monitors
If big is better when it comes to screens or monitors, it is also more costly. As with big TVs, big computer screens are expensive. The Americans’ touching devotion to imperial measurements still holds in the computer industry, so people still shop for goods by the inch rather than by the centimeter.
Anyone planning to do any desktop publishing with a PC will want a larger screen; increasingly, however, World Wide Web users and game players are also discovering the rewards of a larger monitor.
American medical television series, such as ER, regularly show the hi-technology used in modern US hospitals. A good example is the thin flat screens used on all computers. Know why they have thin, flat monitors? Because they’re LCD, which is less bulky and smaller than the standard CRT, the kind used in television sets. The LCD screens don’ t emit any electromagnetic radiation, which could interfere with the heart machines and other sophisticated electronic equipment in hospitals and thereby cause a crisis. LCD screens are lighter, flatter and throw out less heat than CRTs. They are also at least three times the price — and, as such, out of the league of home users.
Scanners
A scanner is a device a bit like a photocopier, which creates a digital image of a page and stores it on disk. These days most scanners handle color images and are beginning to come in quite a variety of shapes and sizes. The scanner market is a great example of the way the ground can shift in peripherals. Scanners used to be expensive pieces of professional equipment; now, they are an increasingly useful addition to the home or small business PC environment.
The most practical home scanners used to be hand-held devices that the user could slowly track across the desired image, strip by strip. Now, however, there is a wide range of both flatbed and sheet-fed scanners available between $ 500 and $ 1200.
The first application for scanners has been to scan images or photographs, especially for reproduction in publications. Besides scanning images, the other major application for scanners is OCR scanning in printed articles and converting them to text on the PC.
Printers
There are three main types of printers—dot matrix, inkjet and laser. Dot matrix models still have their place in high-volume commercial jobs, but few home and small office users choose them now. They might be cheap, but they are noisy and the results (especially in color) simply aren’t very good.
By contrast, inkjet printers have taken the consumer market by storm in recent years. Unlike dot-matrix printers, which hammer pins against a ribbon as a typewriter does, inkjets silently squirt ink onto the page.
Inkjets, however, are slow, and the quality of their printed type isn’t as crisp as you want for professional use. So the next step up is a laser printer. Since the introduction of GDI technology—which cuts down the demands on the printer hardware by getting the PC to do the hard work of the printing process—laser printers have come down markedly in price.
Color laser printers are a bit like color laser copiers—they exist, but only in larger offices and specialist graphics businesses. The various kinds of color laser will inevitably get cheaper—but they may be overtaken in the consumer market by new printers on the US market, which turn out glossy prints which look like photographs and are aimed at users of the new computerized, digital cameras.
LCD screens are ______CRT screens.
选项
A、three times the price of
B、cheaper than
C、are almost of the same price as
D、twice the price of
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/DmlO777K
0
专业英语八级
相关试题推荐
InAustralia,reportsaboutAboriginalpeopleoftenmakefordepressingreading.Justafewdaysago,thelatestofficialreport
InAustralia,reportsaboutAboriginalpeopleoftenmakefordepressingreading.Justafewdaysago,thelatestofficialreport
InAustralia,reportsaboutAboriginalpeopleoftenmakefordepressingreading.Justafewdaysago,thelatestofficialreport
InAustralia,reportsaboutAboriginalpeopleoftenmakefordepressingreading.Justafewdaysago,thelatestofficialreport
A、Itsaimistoshocktheaudiencehomeandaboard.B、ItisarealisticsituationdramaonsocialproblemsinLondon.C、Itisth
InearlyJune,theOrganizationforEconomicCooperationandDevelopment(OECD)—thecluboftheworld’swealthyandalmostwealt
Oneofthemostunexpectedthingsabouthavingchildrenishowthequesttomoldperfectlittlehumansultimatelybecomesaproj
AftertheAmericanRevolution,_____becamethefirstcapitaloftheUnitedStates,beingalreadythelargestcityinNorthAmer
Anintelligentpersonwillnotallowhimselftobeinfluencedbyadvertisements.Instead,hewill,firstofall,trytogettok
Anintelligentpersonwillnotallowhimselftobeinfluencedbyadvertisements.Instead,hewill,firstofall,trytogettok
随机试题
女性,34岁,干咳、低热3天就诊。查体:T37.5℃,双下肺可闻及少量湿性哕音。胸片示双下肺片状阴影。血常规检查未见异常抗炎治疗7天,患者症状无明显改善,并出现进行性呼吸困难。复查X线胸片示双下肺片状影较前略扩大。下列检查中对明确病因意义不大的是
在甾体激素类药物的鉴别试验中从来没用过的反应为
某产妇,足月产后3天,出现下腹痛,体温不高,恶露多,有臭味,子宫底位于脐上1指,子宫体软。以下护理措施中,错误的是
对会计科目辅助核算属性,某一科目能够同时设置辅助核算的有()。
甲公司为增值税一般纳税人,适用的增值税税率为13%,期初无留抵增值税税额,适用企业所得税税率为25%。甲公司2020年1月份发生如下经济业务。(1)1日,甲公司委托乙公司销售A商品2000件,A商品已经发出,每件成本为60元。合同约定乙公司应按每件10
下列项目中。符合印花税相关规定的有()。
租赁合同是出租人将租赁物交付承租人使用、收益,承租人支付租金的合同,租赁期限不得超过()年。
今年清明节我国新疆北部和南部、西北地区东部有小到中雨雪或雨夹雪,华北大部地区将先后有小到中雨雪或雨夹雪,东北大部地区晴转多云,南方大部分地区多云,部分地区阴有小雨或阵雨,4月5日全国34个主要城市中,据国家气象局报告,一半城市出现降雨,6个晴,4个多云,3
给定资料1.2017年中央一号文件是新世纪以来指导“三农”工作的第14个中央一号文件。这份题为《中共中央国务院关于深入推进农业供给侧结构性改革加快培育农业农村发展新动能的若干意见》的文件,首次提出“田园综合体”概念,指出“支持有条件的乡村建设以农
Completethenotesbelow.WriteNOMORETHANTHREEWORDSforeachanswer.TheWorldHealthOrganisationsaysahealthycitymust
最新回复
(
0
)