Raising the Level of Abstraction
This technical note discuss abstraction as a way of generalizing a process or component for wider application. By hiding complexity inside a module, abstraction enables system designers o think at a higher level. This lower entry barriers to using (and reusing) a complex technology.
- 2013 HBS
Choosing a Book Format
EPUB is the standard publishing format used by many e-book readers including iBooks, Easy Reader, VoiceDream Reader, etc. This is the most popular and widely used format.
DAISY format is used by GoRead, Read2Go and most Kurzweil devices.
Audio (MP3) format is used by audio only devices, such as iPod.
Braille format is used by Braille output devices.
DAISY Audio format works on DAISY compatible players such as Victor Reader Stream.
Accessible Word format can be unzipped and opened in any tool that supports .docx files.