# Input capture
**Wikidata**: [Q17044509](https://www.wikidata.org/wiki/Q17044509)  
**Source**: https://4ort.xyz/entity/input-capture

## Summary
Input capture is a function of a microcontroller that records the timing and state of digital input signals, typically used for measuring pulse widths, frequency, or event timing. It is essential for applications requiring precise signal analysis, such as motor control, sensor interfacing, and communication protocols.

## Key Facts
- **Instance of**: Microcontroller function
- **Related to**: Microcontrollers (small computers on a single integrated circuit)
- **Freebase ID**: /m/0861bv
- **Microsoft Academic ID (discontinued)**: 56311306
- **Primary use**: Measuring pulse widths, frequency, or event timing in digital systems
- **Applications**: Motor control, sensor interfacing, and communication protocols

## FAQs
### Q: What is input capture used for?
A: Input capture is used to record the timing and state of digital input signals, enabling precise measurement of pulse widths, frequency, or event timing in microcontroller-based systems.

### Q: How does input capture differ from other microcontroller functions?
A: Unlike general-purpose I/O, input capture is specialized for timing measurements, while analog-to-digital conversion (ADC) handles continuous signals. Both are essential for different types of signal processing.

### Q: Can input capture be used in real-time systems?
A: Yes, input capture is commonly used in real-time systems where accurate timing is critical, such as motor control and sensor data acquisition.

## Why It Matters
Input capture is a fundamental feature in microcontrollers, enabling precise timing measurements for applications like motor control, sensor interfacing, and communication protocols. By accurately recording the timing and state of digital signals, it supports real-time data processing and enhances the functionality of embedded systems. This capability is crucial for industries relying on embedded systems, ensuring reliable and efficient operation in various applications.

## Notable For
- **Precision timing**: Enables accurate measurement of pulse widths and frequency in digital systems.
- **Real-time applications**: Essential for motor control, sensor interfacing, and communication protocols.
- **Microcontroller integration**: A core function in small, integrated computing devices.

## Body
### Functionality
Input capture records the timing and state of digital input signals, allowing microcontrollers to measure pulse widths, frequency, or event timing. This function is critical for applications requiring precise signal analysis.

### Applications
Input capture is used in motor control systems to measure encoder signals, in sensor interfacing to detect events, and in communication protocols to synchronize data transmission. Its ability to provide accurate timing data makes it indispensable in embedded systems.

### Technical Integration
As a microcontroller function, input capture operates alongside other features like general-purpose I/O and analog-to-digital conversion (ADC). While ADC handles continuous signals, input capture specializes in discrete timing measurements, supporting a wide range of embedded applications.