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When a key is pressed, a debounce logic comes into operation in
- a)scanned keyboard special error mode
- b)scanned keyboard with N-key rollover
- c)scanned keyboard mode with 2 key lockout
- d)sensor matrix mode
Correct answer is option 'C'. Can you explain this answer?
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When a key is pressed, a debounce logic comes into operation ina)scann...
In scanned keyboard mode with 2 key lockout mode of operation, when a key is pressed, a debounce logic comes into operation. During the next two scans, other keys are checked for closure and if no other key is pressed then the first pressed key is identified.
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When a key is pressed, a debounce logic comes into operation ina)scann...
Debounce Logic in Scanned Keyboard Mode with 2 Key Lockout
Introduction:
A keyboard is an input device that sends signals to a computer when a user presses a key. In scanned keyboard mode with 2 key lockout, the keyboard sends signals to the computer in a specific way.
Debounce Logic:
When a key is pressed, the keyboard sends a signal to the computer. The debounce logic is an algorithm that prevents multiple signals from being sent when a key is pressed. It does this by adding a delay between the initial signal and the subsequent signals. This ensures that only one signal is sent to the computer when a key is pressed.
Scanned Keyboard Mode with 2 Key Lockout:
In scanned keyboard mode with 2 key lockout, the keyboard sends signals to the computer in a specific way. The keyboard is divided into rows and columns, and each key is assigned a specific row and column. When a key is pressed, the keyboard sends a signal to the computer that includes the row and column of the key.
The computer then uses this information to determine which key was pressed. In this mode, the keyboard can only send signals for two keys at a time. This is known as 2 key lockout.
Conclusion:
In conclusion, a debounce logic comes into operation in scanned keyboard mode with 2 key lockout to prevent multiple signals from being sent when a key is pressed. This mode of operation is useful in reducing errors and ensuring accurate input.
Introduction:
A keyboard is an input device that sends signals to a computer when a user presses a key. In scanned keyboard mode with 2 key lockout, the keyboard sends signals to the computer in a specific way.
Debounce Logic:
When a key is pressed, the keyboard sends a signal to the computer. The debounce logic is an algorithm that prevents multiple signals from being sent when a key is pressed. It does this by adding a delay between the initial signal and the subsequent signals. This ensures that only one signal is sent to the computer when a key is pressed.
Scanned Keyboard Mode with 2 Key Lockout:
In scanned keyboard mode with 2 key lockout, the keyboard sends signals to the computer in a specific way. The keyboard is divided into rows and columns, and each key is assigned a specific row and column. When a key is pressed, the keyboard sends a signal to the computer that includes the row and column of the key.
The computer then uses this information to determine which key was pressed. In this mode, the keyboard can only send signals for two keys at a time. This is known as 2 key lockout.
Conclusion:
In conclusion, a debounce logic comes into operation in scanned keyboard mode with 2 key lockout to prevent multiple signals from being sent when a key is pressed. This mode of operation is useful in reducing errors and ensuring accurate input.
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When a key is pressed, a debounce logic comes into operation ina)scanned keyboard special error modeb)scanned keyboard with N-key rolloverc)scanned keyboard mode with 2 key lockoutd)sensor matrix modeCorrect answer is option 'C'. Can you explain this answer?
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