Sony introduces the Betamax VCR, the world’s first home-use videocassette recorder using 1/2-inch tape. Demonstrates the world’s first four-channel cassette tape recorder. The BM-144 allows the user to switch back and forth on single standard cassette from four different recordings. Priced at $1,295, it records for a maximum of 1 hour. “Make your own TV schedule” – early ads proclaim.