37
COMBINING SYSTEMS
Now you have seen how each of the different input blocks work, you can
combine them to make more complex systems.
In real life, messages are often combined to make sure systems work
properly. For instance, a train may not start until all the doors have closed
properly and the driver has pressed the start button. An elevator will not let
the doors open until it has reached the correct floor.
Elevators may also work out what is the most efficient way to stop at several
floors where the call button has been pressed.
The logical Logiblocs AND, OR, NOT, DELAY and the FLIP/FLOP (the
orange ones) can all be used to combine messages in different ways. But
you have to think?
❶
LIGHT AND SOUND TOGETHER
Putting the Logiblocs together as shown will make a
system that will react to light or sound.
We are using the OR block to take a
signal from either the SOUND
SENSOR or the LIGHT SWITCH to
make the alarm go off.
This makes a more reliable alarm
system which will detect anyone trying to
pass, whether they make a sound
or cast a shadow.
Содержание Super Inventor's
Страница 1: ...I N V E N T O R S M A N U A L ...
Страница 2: ......
Страница 24: ... y y 24 ...
Страница 25: ...25 MOTHER SHIP Support the Mother Ship in three places using the BATTERY BOX and the two CORNER blocs ...
Страница 27: ... yy yy yy yy 27 CONTROL SHIP Now use your Logimagination to design and build your own spacecraft ...