May 2019
Beginner to intermediate
296 pages
6h 58m
Japanese
Content preview from IT用語図鑑 ビジネスで使える厳選キーワード256
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81
関連用語
用語に関連する話
用語の使用例
2
I
T
解 像 度 と 画 素 、ピ ク セ ル
色を表現する三原色
画面や印刷物で色を表現するた
めに、3つの色を混ぜてあらゆる
色を作り出す。この基本となる色
を三原色と言い、「光の三原色」と
「色の三原色」がある。
ディス プ レイなど で 使う
RGB
Red（赤）、 Green（緑）、 Blue（青）
の頭文字で、ディスプレイなどで
使われる「光の三原色」をそれぞ
れの量で表す。
印刷物で使うCMYK
シアン、マゼンタ、イエローとい
う「色の三原色」の頭文字を取った
CMYに加え、キー・プレートであ
る黒を合わせた4つの色で、印刷物
での色の指定によく使われる。
写 真や 画 像 の 綺 麗さを 決 める
画 像ファイル やコンピュータの 画面は小さな点 の集まりでできており、この点をピクセル や
ドットと言う。1 つの 画像を構 成 するピクセル の数が 画素で、100 万画 素であれば、小さ
な 100 万個の点で構成されていることを意味する。1インチ（約 2.54cm）にあるドットの
数を表す言葉に解像度があり、「dpi（ドット/ インチ）」という単位を使う。
高解像度 低解像度
▶
か い ぞ うど
▶
がそ
▶
ぴくせる
Keyword
066
「プリンタを選ぶときは、解像度の高い機種を選ぶと綺麗に印刷できるよ。」
VGAとHDMI
……P72
JPEGとPNG
……P172
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.