This document discusses text and fonts. It defines text as the simplest data type used to communicate ideas and facts. It describes the different elements of text, such as alphabet characters, numbers, and special characters. It also discusses the different types of text, including unformatted, formatted, and hypertext. The document then defines fonts and typefaces, and includes terminology like baseline, leading, x-height, and serifs. It classifies fonts and describes font styles. Overall, the document provides an overview of text and the technical aspects of fonts.
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2. Table of Content
1. Introduction of text.
2. Text elements.
3. Types of text.
4. Fonts and typefaces.
5. Font Terminology.
6. Classification of fonts.
7. Font styles.
8. Font types.
9. Bitmapped and Vector fonts.
10. Font appearance.
11. Font mapping.
12. Guidelines of choosing fonts.
13. Efficient use of text.
3. Introduction
• Text is obviously the simplest of data types and requires the least
amount of storage.
• Text in the form of words, sentences, and paragraphs is used to
communicate thoughts, ideas, and facts in daily life.
• Text may not be as visually exciting as some of the other media
types, but it often conveys essential and precise information.
4. …continued
• Multimedia applications depend on text for many things including:
- Page titles
- Delivering information in form of multiple sentences / paragraphs
- Labels for pictures
- Instructions for operating the application
• Text is probably the most common form of information delivery.
5. …continued
• The power of meaning :
- Term “HOME”, “QUIT”, “REFRESH”, “HELP”, “RECYCLE BIN” etc..
• The power and Irregularity of English :
- 1 Billion people used for their main, second and third language.
- Type of English (written and spoken)
- SMS and Tweeter language : English acronym and Instant messaging
jargon : FAQ, FB, IMO, XOXO, NME
6. Text elements
• Alphabet characters
– A – Z and a – z
• Numbers
– 0 – 9
• Special characters
- Punctuation (. , ; “ ‘ ! : - /)
- Signs ($ + - = @ # % ^ & *)
7. Obtaining Text
• Text can be captured in following ways:
– Keyboard
– Mouse
– Scanner (OCR) – Optical Character Recognization*
* designed to translate images of handwritten or typewritten text (usually
captured by a scanner) into machine-editable text.
8. Fonts & Faces
• Typeface
– Graphic representation or the shape of characters.
A typeface is a family of related fonts
– Example : Bookman Old Style
• Font
– Collection of characters of different sizes and styles of a
typeface.
– Example : Arial 18 point Bold
9. Fonts & Faces
• Font Styles
– Bold, Italic and Underline
• Font Size
– Expressed in point
– Example : 18 point (x)
10. • Baseline – the line on which the bases of characters are arranged
• Leading – the distance between successive baselines
• x-height – the distance between the baseline and the top of a lower-
case letter x
• Ascenders/descenders – strokes that rise above the x-height/drop
below the baseline
• Kerning – adjustment of space between certain pairs of letters (e.g.
AV) to make them look more uniform
Font Terminology
11. Font Terminology
– Tracking - Spacing between characters.
– Serif - Flag or decoration at the end of a character
stroke.
– Regular, Condensed and Expanded – the body width
of the font.
– Cases : upper and lower. BALL vs ball
– Case Sensitive : exactly matched
12. •Spacing: monospaced (fixed width)/proportional
•Serifs: serifed/sans serif
Serifs are the small strokes added to the ends of character
shapes in conventional book fonts
•Shape: upright/italic/slanted
Slant is a vertical shear effect, italic uses different glyph
shapes
with a slant
•Weight: bold/normal/light
Classification of Fonts
327–330
13. FD xhpDescender
Cap height
Point size
Ascender
Serif
X-height
This example shows the Times New Roman fontThis example shows the Times New Roman font
Baseline
18. Serif and sans serif fonts
Fonts can broadly be said to be of one of two types: serif or sans serif
A serif is the decorative ‘bit’ at the end of a letter stroke
Serif fonts have them and sans serif fonts don’t (‘sans’ being French
for ‘without’)
Serif fonts are usually used for printed media or documents that have
large quantities of text.
This is because the serif helps guide the reader’s eye along the line
Sans Serif fonts are considered better for computer displays because of
the sharper contrast.
19. Times New Roman
Bookman Old Style
Monotype Corsiva
Courier New
Times New Roman
Bookman Old Style
Monotype Corsiva
Courier New
Serif fontsSerif fonts
Arial
Tahoma
Impact
Verdana
Arial
Tahoma
Impact
Verdana
Sans serif fontsSans serif fonts
20. Font Styles
Bold, Italic, Underline, Strikethrough, superscript
or subscript,
embossedembossed or shadowshadow
CCoolloouurrss
Some common fonts used today include:
Arial (or Helvetica)
A sans serif font
Times New Roman (or Times Roman)
A serif font
Courier New (or Courier)
A monospaced font (all characters have the
same width)
Refer to microsoft word.
21. Font mapping
• Some fonts installed in your machine may
not be available in other user’s machine.
• If the fonts that you used is not available in
other people’s computer, a default font will
be used for substitution.
• Specifying which font to be substitution is
called font mapping.
22. CAN YOU READ THIS? IF NOT IT IS BECAUSE EVERYTHING IS
WRITTEN IN CAPITAL LETTERS. THEREFORE THIS SHOULD ALWAYS
BE AVOIDED.
Can you read this? It is easier because people will recognize shape of
characters easier this way.
Can you read this? It is easier because people will recognize shape of characters
easier this way.
23. Meaningful words
• Text is use for titles and headlines, menus,
navigation, and content.
• Too much text – crowded or ‘busy’ screen
• Too little text – too many page
• Words must be chosen carefully
24. Guideline of choosing fonts
• For small type, do not use decorative fonts because in small
size they are unreadable.
• Use as few typefaces as possible but you can vary the size
and style using italic or bold.
• Adjust the leading or line spacing where you have a lot of
text for easier reading.
• Vary the size of a font according to the importance of the
message you are delivering.
• Use bold or emphasize text to highlight ideas or concept.
25. Guideline of choosing fonts
• In large headlines, adjust the spacing between letters
(kerning) so that the spacing feels right.
• Use anti-aliasing for big fonts but turn off anti-aliasing for
small fonts.
• Surround headlines with white space
• Distinguish text links with colors and underlining
• Use drop caps and initial caps
26. Efficient use of text
• Positive ways to communicate message by
less text and other ways are
1. Hypertext
2. Pop-up Messages
3. Drop-down Boxes
4. Scroll Bars
5. Buttons for interaction
6. Symbols & Icons
27. Types of Text
Hypertext
• It enables the integrated set of documents
(each comprising formatted text) to be
created which have defined linkages
between them.
28. Hypertext
Figure 2.3. Example of an electronic
Document written in hypertext
Hypertext is a type of
formatted text that enables
a related set of documents,
normally referred to as
pages, to be created which
have defined linkage
points, referred to as
hyperlinks, between each
other.
29. Hypertext
• Linking a hypertext or hot word / hotspot to
another part of the title that displays more text
• Very effectively used to retrieve info from
databases
• Helps user in decision making
• User can process information faster and
strategically
30. Pop-up messages
• Another type of Hot word used to save
space
• Click on a hot word or a text, a small
message pops up explaining in brief about
the hot word
• Remains for some time and vanishes after
programmed duration or by a mouse click
31. Drop-down boxes
• Gives the user a set of choices and reduces
his strain of decision making
• That is making choice in a easier way and
limited according to the system’s capabilities
• Choosing may lead to another page with text
or may retrieve info from database
32. Scroll Bars
• Usually not a good practice to use scroll
bars
• Mostly irritates the user
• Important messages should not be posted
using scrollbars, since the user may not
notice it
33. Buttons
• The concept of hyper linking remains the
same
• Change in appearance by using a button
with text to glow on it rather than using a
hyper text
34. Symbols and Icons
symbols
• Concentrated text in the form of stand alone
graphic constructs.
• Convey meaningful messages.
• Need to be learn and advice to use a
standard symbols.
36. Basic ASCII character set
This is a set of characters
that are available in the
ASCII (American
Standard Code for
Information Interchange)
character set. This is one
of the most widely used
character sets and the
table includes the binary
codeword used to
represent each
character.
Computer and Text
37. ASCII Code
ASCII Code
• Each character is represented by a unique 7-bit binary codeword,
meaning that there are 128 (27
) alternative characters.
• In addition to all normal alphabetic, numeric and punctuation
characters, the total ASCII character set also includes control
characters such as BS (backspace), DEL (delete), etc.
38. …continued
Extended Character Set (ISO Latin-
1)
– Extra 1 bit in ASCII is filled with ANSI
(American National Standards Institution)
characters (256 characters)
Unicode
– Unicode is the universal standard for multi
language characters published by Unicode
Consortium.
– Unicode 4.0 standard covers 96,382
characters using 16 bits uniform encoding.
– Unicode can support a wide variety of non-
Roman alphabets including Han Chinese,
Japanese, Arabic, Korean, Bengali, and so on.
ﺍﺏﺙﺚﺝﺡﺥ
αβγδεζ
Unicode
Characters
¢ ∞ ä ü
Extended
Characters
39. Summary
• Text is the simplest of data types and requires the least amount of
storage
• 3 categories of text elements:
Alphabet characters, Numbers, Special characters
• 3 types of text:
Unformatted text, Formatted text, Hypertext
• Font is the collection of characters of different sizes and styles of a
typeface.
• Typeface is the graphic representation or the shape of characters.
• Font Terminology:
Baseline, Leading, x-height, Ascenders/Descenders, Kerning, Tracking,
Serif
• Classification of fonts:
Spacing, Serifs, Shape, Weight
40. Summary
• Font types:
PostScript, TrueType, Bitmap
• Bitmaps require one bitmap for each size.
File size increases as more sizes are added.
Require a lot of memory.
• Vector fonts can draw any size by scaling the vector drawing
primitives mathematically.
File size is much smaller than bitmaps.
• Rasterization refers that font is drawn on the screen one pixel at a time.
• Anti-aliasing blends the font into the background colour to minimize the jagged
edges
making for smoother overall appearance.
41. Summary
• Font mapping specifies which font to be substitution if the
fonts that you used is not available in other people’s computer.
• Positive ways to communicate message by less text:
Hypertext, Pop-up Messages, Drop-down Boxes,
Scroll Bars, Buttons, Symbols & Icons.