Qisda ES900 is a discontinued electronic-book reader developed by Qisda Corporation and based on a

Linux Linux ( or ) is a family of open-source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typically packaged as a Linux distribution, which ...

platform. The device is sold under various brand names worldwide.

Features

Qisda ES900 provides a 16 levels of grayscale SiPix

touchscreen A touchscreen or touch screen is the assembly of both an input ('touch panel') and output ('display') device. The touch panel is normally layered on the top of an electronic visual display of an information processing system. The display is often ...

display for viewing digital content. Pages are turned using the buttons on the device or touchscreen. The ES900 connects to the internet through available

Wi-Fi Wi-Fi () is a family of wireless network protocols, based on the IEEE 802.11 family of standards, which are commonly used for local area networking of devices and Internet access, allowing nearby digital devices to exchange data by radio wave ...

connections. Users can read books without a wireless connection. Disconnecting the wireless connection can prolong the battery life.

Specifications

; CPU *

Samsung The Samsung Group (or simply Samsung) ( ko, 삼성 ) is a South Korean multinational manufacturing conglomerate headquartered in Samsung Town, Seoul, South Korea. It comprises numerous affiliated businesses, most of them united under the ...

2416

ARM9 ARM9 is a group of 32-bit RISC ARM processor cores licensed by ARM Holdings for microcontroller use. The ARM9 core family consists of ARM9TDMI, ARM940T, ARM9E-S, ARM966E-S, ARM920T, ARM922T, ARM946E-S, ARM9EJ-S, ARM926EJ-S, ARM968E-S, ARM996 ...

@ 400 MHz ; OS *

2.6.21 ; Memory * 128 MB ( MDDR) * 2 GB ( NAND) * External

microSD Secure Digital, officially abbreviated as SD, is a proprietary non-volatile flash memory card format developed by the SD Association (SDA) for use in portable devices. The standard was introduced in August 1999 by joint efforts between SanDis ...

/microSDHC (up to 16 GB) ; Connectivity * Wi-Fi b/g
Optional: 3.5G HSDPA * micro

USB Universal Serial Bus (USB) is an industry standard that establishes specifications for cables, connectors and protocols for connection, communication and power supply (interfacing) between computers, peripherals and other computers. A broad v ...

high speed * audio jack ; Miscellaneous * 1530

mAh ''Mångha'' (') is the Avestan for "Moon, month", equivalent to Persian ''Māh'' (; Old Persian ). It is the name of the lunar deity in Zoroastrianism. The Iranian word is masculine. Although Mah is not a prominent deity in the Avestan script ...

, 3.7 V * 487 gram (without Wi-Fi) * Reading mode :* > 10.000 pages (Wi-Fi off)

Formats supported

; Text *

ePUB EPUB is an e-book file format that uses the ".epub" file extension. The term is short for ''electronic publication'' and is sometimes styled ''ePub''. EPUB is supported by many e-readers, and compatible software is available for most smartphones ...

HTML The HyperText Markup Language or HTML is the standard markup language for documents designed to be displayed in a web browser. It can be assisted by technologies such as Cascading Style Sheets (CSS) and scripting languages such as JavaScri ...

PDF Portable Document Format (PDF), standardized as ISO 32000, is a file format developed by Adobe in 1992 to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems. ...

RTF RTF may refer to: Organisations * African Union Regional Task Force, the military operation of the RCI-LRA, 2011–2018. * Radiodiffusion-Télévision Française, a broadcaster in France, 1949–1964 * Russian Tennis Federation, the national gover ...

* TXT ; Picture * BMP *

JPEG JPEG ( ) is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography. The degree of compression can be adjusted, allowing a selectable tradeoff between storage size and imag ...

* PNG ; Audio * MP3

Sold as

The device is sold worldwide under various brand names. ; Asia * Taiwan: Asus Eee Reader DR900 / TZ900 ; Europe * Asus Eee Reader DR900 / DR950 * bq Avant XL

Modification

Being that the hardware utilizes Linux-based software it can be changed or improved to the owners content. The firmware is labeled as “QT Software” and varies from vendor to vendor. The upgrade contains multiple image files with the .img extension, along with other system files. Flashing to upgrade the firmware can be taken advantage of as it does not seem to check if the version that is being installed is older. Due to this, using firmware made by the other vendors on the model each sold in particular is possible.

Dual-boot

The devices seem to contain a native dual-boot capability. When a device specific key combination is pressed during power-on any linux-kernel + ramdisk combination is booted from the sd-card.

References

External links

Asus Eee Reader DR900
{{DEFAULTSORT:Qisda ES900 Electronic paper technology Dedicated ebook devices Linux-based devices