Introduction to digital technology

What is the difference between these 2 watches? The Rolex is analog and the Apple is digital.

Analog and digital signals are used to transmit information, usually through electric signals. In both these technologies, the information, such as any audio or video, is transformed into electric signals.

The difference between analog and digital technologies is that in analog technology, information is translated into electric pulses of varying amplitude.

In digital technology, translation of information is into binary format (zero or one) where each bit is representative of two distinct amplitudes.

Analog waves are smooth and continuous.
Digital waves are stepping, square, and discrete.

Important vocabulary to know

What is the difference in between Analog & Digital technology?

Digital data is a coded sequence of square waves based on 0 and 1.

Difference between image sampling and quantization?

What is the difference between Lossy vs. Lossless compression?

Image file formats: when to use each type of file

Image file formats: when to use each type of file