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Understanding General Purpose Input Output (GPIO)

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Understanding General Purpose Input Output (GPIO)

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Questions and Answers

What are GPIO pins used for?

Providing power to the processor

Interfacing the processor with external devices (correct)

Acting as memory storage for the processor

Connecting multiple processors together

How many GPIO pins are supported by Raspberry Pi 3?

40 (correct)

What is the bidirectionality of GPIO pins?

Bidirectional - can send and receive data simultaneously

Unidirectional - can only receive data

Unidirectional - can only send data

Bidirectional - single pin alone may be used for sending or receiving data, but half duplex (correct)

If a GPIO pin is configured as input, what can it be used for?

Receiving data Signup and view all the answers

What type of devices can be interfaced with the processor using GPIO pins?

Buttons, LEDs, Switches, LCDs Signup and view all the answers

What is the bidirectional nature of GPIO pins?

They can be used for both sending and receiving data Signup and view all the answers

If a GPIO pin is configured as input, what is it used for?

Receiving data only Signup and view all the answers

What happens if a GPIO pin is configured as output?

It can only send data Signup and view all the answers

How many GPIO pins are supported by Raspberry Pi 3?

40 Signup and view all the answers

What type of devices can be interfaced with the processor using GPIO pins?

Buttons, LEDs, Switches, LCDs, etc. Signup and view all the answers

Study Notes

GPIO Pins and Their Functions

GPIO (General Purpose Input/Output) pins are used for various purposes such as connecting sensors, actuators, and other devices to the processor.
The Raspberry Pi 3 has 40 GPIO pins.

Bidirectional Nature of GPIO Pins

GPIO pins are bidirectional, meaning they can be configured as either input or output.

GPIO Pins as Input

When configured as input, a GPIO pin can be used to read the state of a sensor, detect the presence of an object, or receive data from a device.

GPIO Pins as Output

When configured as output, a GPIO pin can be used to control the state of an actuator, send data to a device, or drive an LED.

Interfacing Devices with GPIO Pins

GPIO pins can be used to interface with a wide range of devices, including sensors, LEDs, motors, displays, and keyboards.

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Description

Test your knowledge about GPIO, which allows a processor to interact with the outside world through physical pins. Learn about how GPIOs are used to interface with external devices, such as Buttons, LEDs, Switches, and LCDs.