Digital System Applications Essay Example | Topics and Well Written Essays - 2000 words

Digital System Applications - Essay Example Though, they can also be mechanical, pneumatic or even magnetic. Digital computers along with calculators, digital video and audio equipment as well as the telephone system which is the globe’s leading digital system are a few examples of the most familiar digital systems around the globe1. There are however various benefits that are obtained from digital systems. They have been mentioned as follows: The digital systems are mostly very convenient to design. The main reason is that in digital system only switching circuits are used which use the array that is high or low in which they lie and it does not take into account the exact value of voltage or the current. Moreover, it is very easy to store information in a digital system. It is carried on by certain special devices or circuits which can grab digital information and retain it for as long as necessary. In addition, the mass storage of the techniques can store billions of bits of information in a relatively small physical space1. It is easy to maintain accuracy and precision throughout the system because once a signal has been digitized the information contained by it does not deteriorate as it progresses. The operations in a digital system can also be programmed. It is easy to design the digital system whose operations are managed by programs (a set of stored instructions). Digital systems are also less affected by noise. Spurious fluctuations in the noise are not as critical in a digital system as the exact volume of the voltage is not that important as long as the noise does not stop individuals from distinguishing a high from a low. More digital circuitry can be fabricated on an Integrated Circuit (IC) chip. Even though analog system has also been benefited from the massive development of IC technology, its relative complexity and also the usage of the devices cannot be economically integrated. This limitation has prevented the analog system from obtaining the same degree of integration as that of the digital system1. There are very few limitations which are inherent in the digital system. The two biggest among them are as follows: Firstly, most of the physical quantities are analog in nature and therefore these quantities are mostly the input and the output that have been monitored, operated on and controlled by a system like temperature, pressure, flow rate, liquidity level, and velocity among others. These quantities can be expressed in the digital way when there is a need to make it more precise and specific. However, a digital approximation is generally made in the analog quantity. Secondly, the other limitation is that the whole world is analog and as a true fact processing digitalized signals indeed takes a very long time1. In order to take advantages of the digital techniques when dealing with the analog inputs and outputs the four steps which must be followed are as follows: 1. The first step includes converting the physical variable to an electrical signal (analo g). 2. The second step is transforming the electrical (analog) signal into the digital signal. 3. The next step that follows is processing or operating on the digital information. 4. The last step is converting the digital outputs back to the real world analog form1 With