Research and discuss the various ways that a bit is physical

Solution

A bit is the basic unit of information in computing and digital communications.In the begining of time,a bit was often stored as the position of a mechanical lever or gear, or the presence or absence of a hole at a specific point of a paper card or tape.Then later on it began to develop.In the 1950s and 1960s, magnetic storage devices were used .Examples are magnetic core memory, magnetic tapes, drums, and disks. Here, a bit was represented by the polarity of magnetization of a certain area of a ferromagnetic film, or by a change in polarity from one direction to the other. In the 1980s,magneic bubble memory was developed which used the same principle. Today,in modern semiconductor memory where there is dynamic random-access memory, the two values of a bit may are represented by two levels of electric charge stored in a capacitor.

Cache level1, cache level 2, cache level 3 are called as L1,L2,L3 respectively.The L1 and L2 caches are dedicated per core.They are also somewhat closed off in nature. The L3 cache is the general pool of memory that all cores share. All the core that is inside the modern multi-core processor has its own L1 and L2 cache but there is limited L3 , perhaps only one L3 per (entire) die.L1 is the fastest ,L2 comes next and it goes down so on. However, in recent times, the sped difference between the levels has closed, as the Industry shifts to a more unified-style architecture. The L3 cache can even be utilized by an integrated GPU.In modern processors a very small but very fast L1 cache, a slightly bigger but slower L2 cache and a big but slow L3 cache is implemented for the betterment of the processor.L3 cache can have a substantial impact on certain types of games.L3 can be looked at as simply additional cache memory regardless of it\'s architecture. AMD had just released the K6-III 450 wiht the innovative Tri-Level Cache.