Their input capabilities are limited to a few buttons or numbers, or entering data takes extra time, as happens with a personal digital assistant's (PDA) handwriting-recognition capabilities.

它们的输入功能局限于几个按键或数字键，或者像个人数字助理（PDA）手写体识别功能那样，输入数据要花很长时间，它们所拥有的工作处理能力和内存都较小。

youdao

During recent years, the application of online handwriting recognition is more and more widespread, mainly due to the increasing popularity of the personal digital assistant (PDA).

近年来，随着个人数字助理(PDA)等便携式移动计算设备的普及，手写输入的应用越来越广泛。

youdao

It not only created the hand-held computer category and the first workable handwriting-recognition system, it also pioneered the whole idea of doing digital tasks -- including e-mail and Internet browsing -- on a device other than the PC.

WSJ: Technology Makes Advances in Decade

But despite my innate aptitude for illegibility, the four handwriting recognition programs we tested had little difficulty translating my jagged scratches into neat, clean, digital type.

FORBES: Scratch pads