2. Digital Systems

Welcome to your second lesson in the computer science series. I encourage you to start from the beginning with the playlist.

The foundation of it all is binary. Ones and zeros.

For example:

11011011

This is an 8 bit value.

All digital systems are built as binary systems.

You can think of a bit as one of two states. We represent it with 0 or 1. But you can also think of it as false or true. Off or on. At the fundamental level in a circuit board of a computer we either have power or not (transistors and logic gates giving us either on or off), so everything with computers is built off of binary.

With a CD we have either lasered pit or not, allowing us to read the the data on the CD as binary.

We will use binary for audio, video, code, transferring data, cryptography, literally EVERYTHING.

It all comes down to understanding the dif between analog and digital.