Instructions

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Game and Knowledge in Electronics-Lab
Using the programme A-H, you can play
the same sounds, but this time you use a
cable connected to MI2 to MI6 to select
them. The push-button is always connect-
ed to MI1 and is used as start button.
First, use the connection M+ to MI2.
When pressing the button, you will hear
a sound you already know. Then plug the
cable into MI3 for the next sound. Try all
possibilities and decide which sound your
sound box should play.
Firmly wired sound box
Each computer, including your micro-controller,
has two types of memory. One works like short-
term memory, which forgets everything once
you switch it off. Intermediate results are saved
there. For example, if the micro-controller just
detected that your button at input M I2 was
pressed, it must memorise this event so that it
can decide which sound to play.
The second type of memory is like long-term
memory and was filled with all the information
that is often needed already when it was made.
This includes the various programmes for the
individual experiments and also the sounds
that can be played in this project. Each sound
is saved as a long row of numbers, and each
number consists of several bits. The programmes
consist of numbers in the same way, and certain
numbers are understood by the computer to be
commands. There is a command for switching
on output connections, another one for querying
inputs and other commands to measure voltage,
play sounds, and so on. If you become a
programmer in the future, you can develop
these programmes yourself.
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