Recording and reproducing -- Sound -- 5 Equipment and supplies -- 3 Amateurs' manuals 1 Coding theory 1 Design and construction 1 Digital techniques 1 more ... Digital video 1 Electronic circuits -- 1 Equipment and supplies 1 High-fidelity sound systems -- 1 Home video systems -- 1 Integrated circuits -- 1 Power electronics -- 1 Remote control -- 1 Testing 1 Video compression 1 less ...