Oregon State University



Event Details

PhD Final Examination – Islam Almusaly

Thursday, August 17, 2017 11:00 AM - 1:00 PM

Custom Keyboards for Inputting Programs on Touchscreen Devices
Block-based programming languages are used by millions of people around the world. Blockly is a popular JavaScript library for creating visual block programming editors. To input a block, users use a drag-and-drop input style. However, there are some limitations to this input style. We introduce a custom soft keyboard to input Blockly programs. This keyboard allows inputting, changing or editing blocks with a single touch. We evaluated the keyboard’s speed, the number of touches, and errors while inputting a Blockly program and compared it to the drag-and-drop method. Our keyboard reduces the input errors by 68.37% and the keystrokes by 47.97%. Moreover, it increases the input speed by 71.26% when compared to the drag-and-drop. The keyboard users perceived it to be physically less demanding with less effort than the drag-and-drop method. Moreover, participants rated the drag-and-drop method to have a higher frustration level. The Blockly keyboard was the preferred input method.

Major Advisor: Carlos Jensen
Committee: Ronald Metoyer
Committee: Eric Walkingshaw
Committee: Kenneth Funk
GCR: Len Coop

Kelley Engineering Center (campus map)
Calvin Hughes
1 541 737 3168
Calvin.Hughes at oregonstate.edu
Sch Elect Engr/Comp Sci
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