What does this character mean?

He sent a message using Morse code.

This data is encoded, so special software is needed to decode it.

He created a program to encode the message.

He is writing a paper on coding theory.

I am interested in Japanese language education.

His paintings are strongly influenced by expressionism.

Using regular expressions, we search for patterns in strings.

Freedom of expression is one of the fundamental rights of democracy.

In genetics, we study how genes determine the phenotype.