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I'm a retired teacher of electronics, and now thinking about whether I can use Computer Engineering for Big Babies with my grandchildren as I’d intended.
Only the DECODER represents input and output data as binary in a way that is consistent with Computer Engineering for Babies and how, without further circuitry, a digital circuit would receive a binary input or use a binary output to drive an LED.
The other five pages represent binary data using multiple colours. In some cases, the representations are time-dependent; pulsating or cycling through a spectrum.
There is a place for multi-colour, pulsating lights. I just don't think the representation of steady binary signals is it.
My 2 year old enjoyed pushing the buttons. Quality of book is good.
Very entertaining
At first, the lights would not turn on no matter how I toggled the two switches. I even replaced the batteries, but that did not help.
Later, I found that the lights would only come on if I pressed inward on the battery compartment, and sometimes I even had to tap or hit the book lightly to get them to work.
It seems there may be a loose connection or a contact issue in the battery compartment.
My baby girl, who is 7 months old, loves her books. Keeps her entertained while I'm cooking meals.