All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Logic
Switched On (Posted on 2009-04-21) Difficulty: 3 of 5
This is a simple combination lock keypad to provide certain employees differing vault access.

Mouse 'pressing' the buttons turns on the lights in the display.
"R" initialises the display to the download position.

Each button (1-12) will activate at least one light cell but it may illuminate more. Note also that, while two switches may engage an individual bulb and so light it, any more will extinguish it.

A switch is 'ON' when its indicator changes from [O] to [ I ].

Determine the number of levels of security, the button combinations and provide a rationale for all solutions when the display is fully lit with no bulb activated by multiple buttons, otherwise a combination is void.

[Consider each button and its light(s) as a unique event which are not shared by another event in the solutions].

Incidentally, every button will feature at least once in the solutions, and if all buttons are on then no bulbs are lit!

See The Solution Submitted by brianjn    
No Rating

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionsolutionDej Mar2009-04-22 02:34:55
Solutioncomputer solutionCharlie2009-04-21 17:42:53
Please log in:
Remember me:
Sign up! | Forgot password

Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (2)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Copyright © 2002 - 2020 by Animus Pactum Consulting. All rights reserved. Privacy Information