A computer-controlled greenhouse
To get the best plant growing conditions, the temperature and humidity (moisture in the air) have to be controlled.
The greenhouse therefore has temperature and humidity A device that measures a physical quantity and converts it into a signal to be read and interpreted. linked to a computer, and the computer has a control Sequences of instructions for a computer. storing details of the correct temperature and humidity settings. The greenhouse is fitted with a heater, sprinkler and window motor which are also linked to the computer.
If the humidity falls below the values stored in the program, the computer activates the sprinklers and closes the windows. If the temperature falls outside the values stored in the program, the heater is activated by the computer.
The system monitors the conditions all day and night and responds immediately to any changes. To alter the growing conditions the values in the computer program can of course be changed.