Decoder is a logic circuit, which performs reverse operation of encoder. Which is a topic from Digital logic/ digital electronics.
Covers the syllabus of BCA/BSc computer science of University of Calicut.
A topic from Computer Organisation and Architecture and Computer fundamentals
Playlist of Computer Organization and Architecture
https://www.youtube.com/playlist?list=PLoqICi4_6-GofVBix3JAuCAAB9xloSd4a
Playlist of Computer Oriented Numerical methods and Statistics
https://www.youtube.com/playlist?list=PLoqICi4_6-GqEnvO-lANk4ZHB2m13lmba