Analogue computers, Basic Computer Science

ANALOGUE COMPUTERS

A computer is basically a problem-solving device. In aircraft radio systems the problem to be solved is concerned with navigation, in that given certain information, such as range and bearing to a fixed known point, steering commands need to be computed to fly the aircraft to the same, or some other fixed point.

Since the input and output information is continuously changing during flight, analogue computation provides an obvious means of solving the navigation problems.

A block schematic diagram of an analogue computer is shown in Figure.

13_analog computer structure.png

The input devices are radio sensors such as VOR, DME, Omega, ADF, Doppler, Loran, Decca, ILS, and non-radio sensors such as the Air Data Unit and Inertial Navigation System. The output of such sensors will be electrical analogues of the quantities being monitored. The electrical signals contain the necessary information needed to solve the navigation problem, the solution being achieved by the computer.

The computer consists of a variety of analogue circuits such as summing amplifiers, integrators, comparators, sine cosine resolvers, servo systems, etc. The patching network determines the way, in which the analogue circuits are interconnected, which will be such as to achieve the required outputs for given inputs.

There is a disadvantage of analogue computers in that different patching is needed for different applications. Thus aircraft analogue computers are purpose built to solve one particular problem and as such usually form an integral part of a particular equipment.

This lack of flexibility, together with limited accuracy and susceptibility to noise and drift, has led to the introduction of digital computers, made possible by integrated circuits. Even so, the analogue computer, or rather analogue computing circuits, are still extensively used because as stated above, the sensors produce analogue signals.

 

 

Posted Date: 9/13/2012 6:47:25 AM | Location : United States







Related Discussions:- Analogue computers, Assignment Help, Ask Question on Analogue computers, Get Answer, Expert's Help, Analogue computers Discussions

Write discussion on Analogue computers
Your posts are moderated
Related Questions
EXPLAIN CAI? AND ITS PITFALLS

ATM Theory - Unspecified Bit Rate Is intended for non-real time applications, that is, those not requiring tightly constrained delay and delay variation. Examples of applications

which one of the following is a valid identifier

Characteristics of Artificial Intelligence: Artificial Intelligence is not an easy science to describe, as it has fuzzy borders with simulation mathematics, computer science t

Question 1 Explain the concept of knowledge discovery in database Question 2 Discuss the following types of Multidimensional Data Models                    Stars, Snowflakes and

Give birth to new life forms A research of Artificial Life will definitely throw light on what it means for a complex application to be 'alive'. Moreover, ALife researchers th

Scores from a statistics exam are reported as deviation scores. Which of the following deviation scores indicates a higher position in the class distribution?

i am currently studying my computer science engineering 2nd yr. i am unable to select what specification should i take please help me

Question 1 Describe the following with respect to creating Web Forms in .Net environment- Web Form Life Cycle Creating a Web Form Write programs with corresponding

The threading module offered with Python includes a simple-to-implement locking mechanism that will permit you to synchronize threads. A new lock is formed by calling the Lock() me