Exam 16: Input Design and Prototyping

Because inputs originate with system users, human factors play a significant role in input design.

Optical mark recognition is:

Radio buttons should present the alternatives horizontally aligned and right-justified to aid the user in browsing.

Describe three characteristics of radio buttons.

A mouse is a pointing device used in conjunction with graphical user interfaces. It has made it easy to navigate on-line forms and click on commands and input options.

Self-checking digits:

Smart cards are slightly thicker than credit cards and contain a microprocessor, memory circuits and a battery. They represent a portable storage medium from which input data can be obtained.

A suggestion to help with the use of source documents is that data should be sequenced on paper so that it can be read much like a book, from top to bottom, left to right. The system user should not have to move from right-to-left or jump around on the form.

Data capture is the identification and acquisition of new data.

Radio buttons should be used when you want to select a value that is simply a Yes/No.

Format checks determine data entry errors on primary keys. A format check digit is a number or character that is appended to a primary key field.

Optical character recognition (OCR) is less prevalent despite its maturity.

Electromagnetic ADC technology is based on the use of radio frequency to identify physical objects. It involves attaching a tag and antenna to the physical object that is to be tracked. The tag contains memory that is used to identify the object being tracked.

An emerging technology that will greatly impact input design is the_____________________ display. Such displays are common in handheld and palm-top computers that are finding their way into countless information system applications.

A text box requires the user to type the data inside the box. It can allow for single or multiple lines of data characters to be entered.

If source documents are used to capture data, they should be easy for system users to complete and subsequently enter into the system.

An emerging technology that will greatly impact input design is the touch screen display. Such displays are common in handheld and palm-top computers that are finding their way into countless information system applications.

If you needed a user to select from a list of 100 part numbers, your best choice for a GUI control would be:

Existence checks determine whether the input data for each field falls within the legitimate set or range of values defined for that field.

A list box is a control that requires the user to select a data item's value from a list of possible choices. A list box is rectangular and contains one or more rows of possible data values. The values may appear as either a textual description or graphical description.