軍隊(duì)文職招聘行測(cè)基礎(chǔ)知識(shí)-計(jì)算機(jī)外設(shè)簡(jiǎn)介-打印機(jī) - 常識(shí)判斷

軍隊(duì)文職招聘行測(cè)基礎(chǔ)知識(shí)-計(jì)算機(jī)外設(shè)簡(jiǎn)介-打印機(jī)減小字體增大字體軍隊(duì)文職招聘行測(cè)基礎(chǔ)知識(shí)-計(jì)算機(jī)外設(shè)簡(jiǎn)介-打印機(jī)打印機(jī)是各種計(jì)算機(jī)的主要輸出設(shè)備。它能將計(jì)算機(jī)的信息以單色和彩色字符、漢字、表格、圖像等形式打印在紙上。

打印機(jī)的種類很多，目前常見(jiàn)的有點(diǎn)陣擊打式和點(diǎn)陣非擊打式兩種。非擊打式又分為噴墨打印機(jī)和激光打印機(jī)。針式打印機(jī)由打印頭、字車機(jī)構(gòu)、色帶機(jī)構(gòu)、輸紙機(jī)構(gòu)和控制電路組成。打印頭由若干根鋼針構(gòu)成，通過(guò)它們擊打色帶，從而在同步旋轉(zhuǎn)的打印紙上打印出點(diǎn)陣字符。在漢字的輸入中一般用24針打印機(jī)。

噴墨式打印機(jī)是通過(guò)向打印機(jī)的相應(yīng)位置噴射墨水點(diǎn)來(lái)實(shí)現(xiàn)圖像和文字的輸出。其特點(diǎn)是噪聲低、速度快。激光打印機(jī)是利用電子成像技術(shù)進(jìn)行打印。當(dāng)調(diào)制激光束在硒鼓下沿軸向進(jìn)行掃描時(shí)，按點(diǎn)陣組字的原理，使鼓面感光，構(gòu)成負(fù)電荷陰影。當(dāng)鼓面經(jīng)過(guò)帶正電荷的墨粉時(shí)，感光部分就吸附上墨粉，然后將墨粉轉(zhuǎn)印到紙上，紙上的墨粉經(jīng)加熱熔化形成永久性的字符和圖形。它的特點(diǎn)是速度快、無(wú)噪聲、分辨率高。噴墨式打印機(jī)和激光打印機(jī)的輸出質(zhì)量都比較高。

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發(fā)布時(shí)間：2019-04-28 11:44:071.表示羅列增加First, second, third,First, then / next, after that / next, finallyFor one thing for another ,On (the) one hand on the other hand,Besides / what s more / in addition / furthermore / moreover / another / also / especially / In particular2.表示時(shí)間順序now, at present, recently, after, afterwards, after that, after a while, in a few days, at first, in the beginning, to begin with, later, next, finally, immediately, soon, suddenly, all of a sudden, at that moment, as soon as, the moment，form now on, from then on, at the same time, meanwhile, till, not until, before, after, when, while, as during3.表示解釋說(shuō)明now, in addition, for example, for instance, in this case, moreover， furthermore, in fact, actually4.表示轉(zhuǎn)折關(guān)系but, however, while, though, or, otherwise, on the contrary, on the other hand, in contrast, despite, in spite of, even though, except (for), instead, of course, after all5.表示并列關(guān)系or, and, also, too, not only but also, as well as, both and, either or, neither nor6.表示因果關(guān)系because, because of, since, now that, as, thanks to , due to , therefore, as a result (of), otherwise, so that, such that