A hazard is created whenever there is a dependence between instructions, and they are close enough that the overlap caused by pipelining would change the order of access to an operand. Our example hazards have all been with register operands, but it is also possible to create a dependence by writing and reading the same memory location. In DLX pipeline, however, memory references are always kept in order, preventing this type of hazard from arising.
It was actually a few years later, in the year 1898 to be exact, when this idea had taken its existence. Vlademar Poulsen was the person who had invented the earlier concept of Oberlin. In 1928, Fritz Pfleumer developed the magnetic tape. But it was not that compact as how the modern cassette player was.
Vote for this answer. The first pre-recorded video tapes for home use were feature films offered for hire in the USA at $3 to $6 each by Sears Roebuck in the spring of 1972. They were for showing on the Avco Cartavision video player which retailed at $1600. This was an idea ahead of its time, and video rental did not catch on until the introduction of the VHS format in 1976. The following year AndrÃ© Blay, of the small Michigan-based company Magnetic Video, acquired the video rights to fifty movies owned by Fox and retailed them by mail order for $50 each.