E-book reader (e-book device) is a tool for browsing e-books. The size of the screen determines the number of words that can be displayed on a single screen. The technologies applied to the screen of e-book readers include electronic paper technology, LCD and other display technologies. At present, most e-book reader manufacturers have given up the manufacture of LCD screens and turned to study electronic paper screens.
[Edit this paragraph] Reader based on electronic paper technology
The e-book reader based on e-paper technology (as shown in the upper right) is a very portable flat reader, which is equivalent to a thin paperback book and can store about 200 e-books. With the characteristics of light weight, large capacity, long battery life and large screen, it is a new choice for paperless office. Some e-book readers have the function of adjusting font size, and can display black and white pictures, Word files and RSS news subscriptions in JPEG and GIF formats.
E-paper display screen achieves visual effect by reflecting ambient light, so it looks more like ordinary paper. This kind of display screen is very energy-saving, because once it is turned on, it no longer needs current to maintain the display of words, and only consumes energy when turning pages.
This kind of readers are:
* wefound study room (Peking University Founder Group) (2009)
* foxit e slip Fuxin e-book (Fuzhou Fuxin Software) (2009)
* Readius (Polymer Vision) (2008)
:: Astak Mentor (Astak Company) (2008)
* BeBook Reader (Endless Ideas) (2008)
* Hanwang Electronic Paper Book (Hanwang Technology Co., Ltd.) (2007)
* E-book of Dr. Yi (Guangzhou Bolang) (2007)
* STAReBOOK (Yi Rui Technology Company) (2007)
Ger2 (Ganascia) (2007)
* Kindle (Amazon) (2007)
:: Third Generation Online Books (Booken Company) (2007)
* Fuji (2007)
* Hanlin Reading (Jinke Company) (L Book Reading, issued in Ukraine) (2007)
* Sony Reader (Sony Corporation) (2006)
* Iliad (iRex) (2006)
:: Sony Corporation (2004)
See /wiki/E-book_Reader_Matrix for technical comparison of this kind of readers.
[Edit this paragraph] Readers based on technologies such as LCD.
superiority
1, easy to carry, generally smaller than a book, and much lighter, very easy to carry.
2. Large capacity. Early e-book readers only had about 8M and 32M of memory, and the books they could hold were limited. At present, most e-book readers can be externally connected with expansion cards, such as SD cards, CF cards, MMC cards, and some can also be externally connected with USB flash drives. Depending on the support capacity, you can store 100 to tens of thousands of e-books. It can be said that e-book reader is a small mobile library! !
3, professional, e-book readers are different from mobile phones, PSP and other products, e-book readers are more professional, in addition to simple reading, but also support font enlargement and reduction, marking like paper books, bookmarks, handwritten notes, long standby and other more professional functions. Generally, you can read about 7000 pages with an electronic ink screen, and you can read 3-4 books with 2000 pages charged.
4. There are many supported formats. E-book readers support most book formats, such as TXT, JPG, BMP, HTML, PDF, DOC, EPUB, DJVU, CHM, etc. Even some e-book readers can support RAR, ZIP, PPT and other formats.
disadvantaged
1, the function is still a little single, lacking the function of writing class schedule.
2, the price is expensive, this is because the electronic user base is not as common as mobile phones and digital cameras.
3. Some functions can't meet the memory requirements, such as speed and waiting time.
4. Because the LCD screen is constantly refreshed, it is easy to cause myopia.
This kind of readers are:
* eREAD PC MOBILE PSP NDS (Yi Rui Technology)
* cybergen1(2004), 10 inch color LCD screen (Booken company)
* E-book wise 1 150 (2004), 5.5-inch LCD screen.
* Hiebook (200 1), 5.6-inch LCD, weighing 250g.
* Franklin E-book Man-1999-2002
* SmartQ T5 II 2008-