What type of user interface will you design for the sales clerks? Before you come to your solution, do a careful analysis in three paragraphs that compares and contrasts various user interfaces—natural language, question and answer, menus, input/output forms, command language, and Web-based form-fill documents—for their suitability at Bright’s. Then choose one interface and explain in a paragraph why you find this one the most appropriate based on what you know about Bright’s salesclerks and their current system. Draw a prototype of a display that will be part of your solution. Describe in a paragraph how you will test its usability with the sales clerks.

From your preliminary analysis, it appears that a substantial reduction in errors will be realized if salesclerks at Bright’s Electric (which sells electrical parts, bulbs, and fixtures to wholesale customers) adopt an online system. The new system would allow salesclerks to withdraw a part from inventory (and thereby update inventory), return a part to inventory, check on the inventory status, and check on whether a part is backordered. Currently, to update inventory, sales clerks fill out a three-part form by hand. The customer gets one, inventory keeps one, and at the end of the day the originals are deposited in the front office.