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.
Whether you have a stack of VHS tapes that youâve wanted to digitize, or you found a box of VHS tapes in your parentâs house, you can easily convert those VHS tapes to DVDs. The first VHS tape and recording system was introduced to the world in 1956. The player cost $50,000 and a 90-minute reel of tape cost $300. Before the sticker shock floors you, these were created for professional use. The players and tapes didnât become readily available for consumers until the late 1970s.