The Nintendo Gameboy DS Lite with touchscreen is a revolutionary device
that has expanded well beyond the realm of video games.
One of the cartridges that is available for the DS is the 漢字そのまま DS楽引辞典 (Kanji Sonomama Rakubiki Jiten) Dictionary Cartridge, hereafter refered to as the KSRJ.
In the past, very few electronic japanese dictionaries (EJDs) had pen or handwriting input, and the handful that were out were unique, sold-in-Japan only devices such as the Sharp MI Zaurus PDA series, a few PocketPC PDAs, and a small number of EJDs from the major EJD makers such as Seiko.
This was due to the then costly requirement for a computer processor that could handle the complexities of pen and handwriting input, as well as the associated memory and other hardware necessary.
However, today, the Gameboy DS easily packs more processing power than computers from a decade ago, and can easily match the processing power of PDAs.
So today, we have
one of the few devices available to the majority of foreigners learning
Japanese that is competitively priced ($130 for the DS Lite, $50 for
the KSRJ cartridge), widely available, and has handwritten input that
The offical website
for the KSRJ has complete
specifications and an overview of its capabilities.
The cartridge goes into the DS Lite like any other DS cartridge, and appears in the startup menu as a selectable DS game you can launch. Once you've launched the KSRJ dictionary, the first thing you will see is a checkbox in the upper corner that will let you into the full program. Simply click on it and you're ready to lookup entries.