FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -A unit is a way of measuring font size, line height, line length, margins, or virtually anything in the practice of typography. Multiple units are in existence, including many historic ones, but points, pixels, and ems (or rems) are the units most relevant to today’s digital typesetting needs.

Detailed explanation-2: -A font is typically measured in a point (pt) size, which is the vertical measurement of the lettering. There are approximately 72 (72.272) points in one inch or 2.54 cm.

Detailed explanation-3: -The point size is a way to introduce standardization to typography. The point size is the smallest unit of measurement. In metal type, point size refers to the height of the metal body on which a typeface’s character is cast. In digital typefaces, the metal body is replaced by an invisible box known as the em square.

Detailed explanation-4: -Point size refers to the height of the font-not the height of the letter. For digital publishing, for at least the past 30 years or more, 1 point = 1⁄72 of an inch.

Detailed explanation-5: -Font size specifications may come in points or pixels where: 1 pixel (px) is usually assumed to be 1/96th of an inch. 1 point (pt) is assumed to be 1/72nd of an inch. Therefore 16px = 12pt.