Computer Interfacing
Input/Output Devices
,Introduction
• This session focuses on how to interface with input devices
• Input devices are those generating data to the processor
• Many input devices have analog nature, that’s why an ADC is used,
and is an important part of any microcontroller system
,Introduction
• In this session we focus on:
• Input switches
• Multiplexed keypads
• Analog to Digital Converters (ADC)
• Analog signals sources and sensing
• Shaft encoders
, Input Switches
• For simple 1/0 information, simple mechanical switches can be use
• An I/O pin is needed for each switch in order to read the informatio
given by each switch
• Switches can be either push-buttons or On/Off switches
Input/Output Devices
,Introduction
• This session focuses on how to interface with input devices
• Input devices are those generating data to the processor
• Many input devices have analog nature, that’s why an ADC is used,
and is an important part of any microcontroller system
,Introduction
• In this session we focus on:
• Input switches
• Multiplexed keypads
• Analog to Digital Converters (ADC)
• Analog signals sources and sensing
• Shaft encoders
, Input Switches
• For simple 1/0 information, simple mechanical switches can be use
• An I/O pin is needed for each switch in order to read the informatio
given by each switch
• Switches can be either push-buttons or On/Off switches
