1 .. include:: <isonum.txt>
2
3 ============
4 Introduction
5 ============
6
7 The main purpose of the Industrial I/O subsyst
8 for devices that in some sense perform either
9 analog-to-digital conversion (ADC) or digital-
10 or both. The aim is to fill the gap between th
11 :doc:`input <../input>` subsystems. Hwmon is d
12 sensors used to monitor and control the system
13 or temperature measurement. :doc:`Input <../in
14 focused on human interaction input devices (ke
15 In some cases there is considerable overlap be
16
17 Devices that fall into this category include:
18
19 * analog to digital converters (ADCs)
20 * accelerometers
21 * capacitance to digital converters (CDCs)
22 * digital to analog converters (DACs)
23 * gyroscopes
24 * inertial measurement units (IMUs)
25 * color and light sensors
26 * magnetometers
27 * pressure sensors
28 * proximity sensors
29 * temperature sensors
30
31 Usually these sensors are connected via :doc:`
32 :doc:`I2C <../i2c>`. A common use case of the
33 combined functionality (e.g. light plus proxim
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