Embedded Files
KEY TAKE AWAY POINTS:
START A BIT > Knowledge Base > This page
Analog Signal, Digital Signal
Analog Signal, Digital Signal
Signals as in Life
Signals as in Life
Snapshot from Dictionary boxes on Google
Signals in Electronics
Signals in Electronics
In electronics, a signal is carried by electromagnetic or electrical current, often represented by a time-varying Voltage that is carrying information.
2 types of signals: Analog and Digital signals.
Analog Signal
Analog Signal
Represents continuous values. At any given time it represents a value within a continuous range. Produce a smooth and continuous curve, no discrete value changes.
Often used to represent changes in natural light, sound, temperature, position, pressure, or other physical phenomena.
Digital Signal
Digital Signal
Represents data as a sequence of discrete values. At any given time it can only take on at the most one of a finite number of values.
Used in all digital electronics, including computing equipment and data transmission devices. Typical case in computer is simply only 2 values.
Analog Signal Presentation
Analog Signal Presentation
Programming
A range of integer numbers
0, 1, 2, 3, ... 254, 255
0, 1, 2, 3, ... 1022, 1023
Physics
Voltage in any values
Analog-to-digital converter (ADC)
Analog-to-digital converter (ADC)
ADC converts analog voltage input to a limited range of numbers. Resolutions
8 bits: 0-255
10 bits: 0-1023
Analog Input & PWM Output with Micro:bit and Arduino
Analog Input & PWM Output with Micro:bit and Arduino
Analog input and output pins are predefined, no need to specify INPUT/OUTPUT by pinMode()
Picture from Physical Computing
Page updated
Google Sites
Report abuse