PDA Baseball Scoring

1
PDA Baseball Scoring

• Easy Baseball Scoring
• for the
• 3Com PalmPilot

2
The Traditional Approach
3
Why use a PDA?

• Traditional scoring requires memorizing codes
• Scorecards are small and too difficult to write
  in
• A PDA can automatically tabulate statistics

4
The Interface

• Allows users with little knowledge of baseball to
  score a game
• Always has a message bar to guide the user
• The scorekeeper will allow undo up to the play of
  the previous batter.

5
The Old Interface
6
The New Interface
7
Proposed Tasks for test

• Easy task
• A play by play recording of a simple at bat.

8
Proposed Tasks for Test

• Medium task
• Scoring the triple.
• The extra information of the batter making a hit
  (and running to the third base) makes this task
  more difficult.

9
Proposed Tasks for Test

• Hard task
• Pick-off a runner.
• A runner tries to steal second base, but is
  tagged out by the second baseman who gets the
  baseball from the pitcher through the first
  baseman.

10
Major Amendments

• Changing the background color.
• The current inning is displayed.
• The number of pitches has been added to fix the
  feedback on foul balls.
• Players number is added to the batter and the
  runner.
• Status bar now displays the name of the batter.

11
Major Amendments

• The bases have now been grayed out to prevent
  confusion.
• All dragging has been replaced with clicking.
• Automatically ending a play when there are no
  runners left on the field.

12
Pilot Testing Procedure

• Introduction to Baseball scoring
• Instructions on using our UI
• Free play time with UI
• Forced the subject to score an actual Baseball
  game caught on tape
• Feedback and comments

13
Results

• Some action functions unclear (Hit, Throw)
• Trouble with free-form ordering of ball and
  runner movement
• VB annoyances (Buttons, No Feedback)
• Missing functionality(Line-out, Balk)

14
Conclusion

• Have fixed most of the problems.
• Our prototype is still a VB application.
• Different from Palm OS based implementation.
• Replicate the Palm Pilot environment by
• Limiting screen capabilities.
• Simulating physical features of the Pilot.