Essay - Digital vs Analog Design the Trend Toward Digital Design When...

Digital vs Analog Design

The Trend toward Digital Design

***** one choose between analog and digital design approaches, the relative merits of low cost ***** versus digital signal processing (DSP) solutions need to be explored.

*****, or analog, circuits typically use only a few components, so are the simplest types ***** integrated circuits (IC). Usually, analog circuits are connected to devices that collect signals from ***** environment or send signals back ***** the environment, such as a microphone ***** converts fluctuating vocal *****unds into an electrical signal of varying voltage (Integrated 5).

Investigating a system through studying its analog h***** been fairly common in science. In acoustics, the elements of various systems have been explained by setting up and studying a similar or analogous ***** system. Physics students recall elementary explanations ***** electrical phenomena in terms of easily visualized but analogous hydraulic phenomena, such as dams and locks with currents of water (Bianchi 1).

So it may be understood that an analog computer operates ***** setting ***** a (*****ous) system ***** solves problems more ***** ***** is so ***** to ***** real ***** that the solution is valid for both. One of the oldest and most common analog computers is the slide rule. Marked along the sides in linear distance is a scale on ***** rule analogous or proportional ***** the logarithm of the num*****rs engraved. So ***** ***** ********** for multiplication of two numbers is equivalent to summing the *****s of ***** ***** numbers.

People use analogous computing elements every day, ***** as the watthour meter which continuously determines the product ***** electrical voltage and current ***** arrive at power in watts and then integrates th***** with respect to time to obtain the energy used in watt hours.

***** contr*****t, digital computers use numbers as discrete digital numbers, whole numbers or decimal fractions, while ***** analog computer represents mathematical quantities ***** an analogous continuous range of voltages.

Digital computers perform with numbers, working ***** ***** one arithmetic operation at a time, s*****ring the result in memory ***** then proceeding to the next oper*****ion in ***** program. A digital computer is programmed by writing a set of instructions which will properly direct the ***** at each step of the computation. Digital computing *****s binary (only two numbers, zero and one) numbers to calculate complex *****s of equations in simple sequences using these two numbers. Programing this sequence might be likened ***** reading a book. While a person will normally read ***** word and line one at a time, they may at ********** jump back to an earlier place in the text to confirm a f*****ct, or skip sections not of interest. In a computer program, it ***** sometimes go ***** *****d repeat ***** ***** in some section of the program over and over again until some internal cond*****ion is met. This is called the flow of control within the program ***** it is what allows the computer ***** perform tasks repeatedly without human intervention.

These instructions, telling ***** computer to