Question 2a)
reads labels containing parallel dark and light lines using laser light or LEDs. the width of each
line represents a binary code
2b)
It automatically updates and changes the stock number accordingly when the code is scanned.
3a)
Via digitisation/ analog to digital converter.
Question 5a)
Sensor 1: Temperature sensor
Use: Measures the temperature of chemicals in a tank to make sure they don’t overheat and
cause dangerous reactions.
Sensor 2: Pressure sensor
Use: Monitors the pressure inside pipes or containers to prevent explosions if pressure
becomes too high.
6b) The sensors collect data from the environment, such as temperature or
pressure. This data is sent as signals to the microprocessor. The microprocessor
compares the data with pre-set safe values. If the values are too high or too low,
the microprocessor can trigger an alert, turn on cooling systems, or shut down
machinery to keep the process safe and under control.
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