Podcast
Questions and Answers
Which of the following is the most common problem with keyboards?
Which of the following is the most common problem with keyboards?
- Hardware failure
- Software malfunction
- Power supply issues
- Contact bounce (correct)
What is keybounce?
What is keybounce?
- When a key is pressed too softly
- When a key is pressed too hard
- When the contacts of a mechanical switch bounce for a short time before staying together (correct)
- When a key is stuck and won't release
How long does keybounce usually last?
How long does keybounce usually last?
- 10 to 20 milliseconds (correct)
- 1 to 2 seconds
- 1 to 2 milliseconds
- 10 to 20 seconds
What is the solution to address keybounce?
What is the solution to address keybounce?
What are the two main techniques used to resolve the problem of multiple key presses?
What are the two main techniques used to resolve the problem of multiple key presses?
What is n-key rollover?
What is n-key rollover?
What is n-key lock-out?
What is n-key lock-out?
What is the significant cost of n-key rollover protection?
What is the significant cost of n-key rollover protection?
What is the 'phantom key' problem?
What is the 'phantom key' problem?
What is the simplest and most often used method for n-key lock-out?
What is the simplest and most often used method for n-key lock-out?
What is the effect of implementing n-key rollover protection without a diode in series with every key?
What is the effect of implementing n-key rollover protection without a diode in series with every key?
What is the solution to the 'phantom key' problem?
What is the solution to the 'phantom key' problem?
Which of the following is the most common problem with keyboards?
Which of the following is the most common problem with keyboards?
What is keybounce?
What is keybounce?
How long does keybounce usually last?
How long does keybounce usually last?
What is the solution to address keybounce?
What is the solution to address keybounce?
What are the two main techniques used to resolve the problem of multiple key presses?
What are the two main techniques used to resolve the problem of multiple key presses?
What is n-key rollover?
What is n-key rollover?
What is n-key lock-out?
What is n-key lock-out?
What is the significant cost of n-key rollover protection?
What is the significant cost of n-key rollover protection?
What is the 'phantom key' problem?
What is the 'phantom key' problem?
What is the simplest and most often used method for n-key lock-out?
What is the simplest and most often used method for n-key lock-out?
What is the effect of implementing n-key rollover protection without a diode in series with every key?
What is the effect of implementing n-key rollover protection without a diode in series with every key?
What is the solution to the 'phantom key' problem?
What is the solution to the 'phantom key' problem?
Which type of key press detection technique ignores all key closures until only one key closure is detected?
Which type of key press detection technique ignores all key closures until only one key closure is detected?
What is keybounce?
What is keybounce?
What is the duration of keybounce?
What is the duration of keybounce?
What is the solution to keybounce?
What is the solution to keybounce?
What is the purpose of the n-key lockout technique?
What is the purpose of the n-key lockout technique?
What is the phantom key problem?
What is the phantom key problem?
What is the duration of the delay mechanism used in the second method of n-key rollover?
What is the duration of the delay mechanism used in the second method of n-key rollover?
What is the purpose of the R-C filter used in hardware filtering?
What is the purpose of the R-C filter used in hardware filtering?
What is the main difference between the two techniques used to resolve the multiple key press problem?
What is the main difference between the two techniques used to resolve the multiple key press problem?
What is the effect of pressing three adjacent keys at a right angle?
What is the effect of pressing three adjacent keys at a right angle?
What is the most common problem in keyboard interfacing?
What is the most common problem in keyboard interfacing?