Activity 2.1 Need Input

Buttons A and B on your micro:bit are a form of ______.

• Input

• Output

• Processors

• Microchips

When a user presses either or both buttons, it completes an electrical circuit, which sends a signal to the microcontroller, and if programmed to do so, the microcontroller will send information to another device called the ______ device.

• input

• output

• electrical

• remote

Which one is the photocell resistor?

• a

• b

• c

Which one is the flex sensor?

• a

• b

• c

Which one is the pressure sensor?

• a

• b

• c

You can connect additional inputs to the bottom edge of the micro:bit with _______ _______.

• crocodile clips

• alligator clips

• jaw clips

• wire clips

The _____ labeled 0, 1, and 2 on the bottom edge of the micro:bit are for attaching external input devices, including a photocell resistor, a pressure switch, and a flex sensor.

• pins

• clips

• holes

• squares

These three pins are also used to attach external output devices like a _____ or _____.

• motor

• buzzer

• wire

• circuit

The pins labeled “_____” and “_____” relate to the power supply of the board, and they should NEVER be connected together, because this could cause a short circuit and fry the processor or components that are on or attached to the micro:bit.

• 3V

• GND

• GRD

• 2V

Attaching input devices to your micro:bit requires the 3V pin to supply _____.

• power

• water

• wind

• energy