Question

Difference between 2 key lockout and n key rollover

Answer 1

Key lockout and key rollover are two different operation modes of keyboards. In the 2 key lockout mode whenever keys are pressed on a keyboard only one key is recognised and recorded being a debounce feature. Thus, even if multiple keys are pressed simultaneously only one operation will be recorded.
However, for the n key rollover, simultaneous keys can also be recorded at once and their codes are stored in the first in first out RAM. Thus, not need to wait for a single key at a time process.  

Answer 2

Answer:

2 key lockout refers to a feature in which the keyboard will not register any additional key presses if two keys are pressed simultaneously.

N-key rollover, on the other hand, refers to a feature in which the keyboard can register and correctly interpret multiple key presses at the same time.

Explanation:

2 key lockout refers to a feature in which the keyboard will not register any additional key presses if two keys are pressed simultaneously. This is a measure to prevent accidental keystrokes or typos.

N-key rollover, on the other hand, refers to a feature in which the keyboard can register and correctly interpret multiple key presses at the same time, regardless of how many keys are pressed simultaneously. This is useful for gaming or other situations where multiple key presses are needed at the same time.

In summary, 2 key lockout is a restriction on the number of keys that can be pressed simultaneously, while N-key rollover is a capability to register and interpret multiple key presses simultaneously.

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