WorksheetsA Level Computer Science Input Devices Quiz
Total questions: 10
Worksheet time: 5mins
Which specific reliability metric is explicitly listed in the device selection framework that must be used to justify the choice of input devices?
MTTR (Mean Time To Repair)
MTBF (Mean Time Between Failures)
MTTF (Mean Time To Failure)
Failure Rate (FR)
What is the primary function and key consideration of N-Key Rollover (NKRO) in a high-specification keyboard?
To provide reduced key press latency
To allow multiple simultaneous key presses to be registered correctly
To enhance the keyboard's environmental durability
To support specialized Dvorak keyboard layouts
When comparing switch mechanisms, what is the core advantage of mechanical switches over membrane switches, as identified in the sources?
They are typically quieter during operation
They consume significantly less power
They offer better tactile feedback
They are inherently wireless and require no cable
A professional-grade mouse is marketed with a polling rate of 1000 Hz. Based on the technical specifications provided, what is the corresponding responsiveness time in milliseconds (ms)?
10 ms
1 ms
0.1 ms
100 ms
What is the specific technical advantage of a laser mouse (using a laser diode) over a traditional optical mouse (using an LED) that allows it to maintain precision control across varied environments?
It achieves a higher default DPI setting
It significantly reduces wireless latency
It can work reliably on surfaces that are glossy, transparent, or non-reflective
It requires calibration less frequently
DPI (Dots Per Inch) is a key consideration for mouse selection. What does a higher DPI measurement directly correlate to?
A reduction in initial cost
A lower probability of failure (higher MTBF)
A smaller design for portability
Increased sensitivity and more precise control
In the context of device selection, Ergonomics refers to:
The speed at which data can be transferred
The protocols used for device connectivity
Detailed consideration for human factors, comfort, and suitability for extended use
The ability of the device to withstand its operating environment
Which technical specification dictates how precise the data captured by a scanner is, and is measured using DPI?
Speed/Data transfer rate
Cost
Accuracy/Resolution
Compatibility protocols
For voice recognition systems, the sources state a specific minimum bit depth is required for quality audio capture. What is this minimum bit depth?
8-bit
12-bit
16-bit
32-bit
If a microphone has a sample rate of 44.1 kHz, how many discrete samples of sound are captured and converted per second?
4,410 samples per second
441,000 samples per second
44,100 samples per second
4.41 samples per second
