## Is Differential Analyzer a digital computer?

differential analyzer, electromechanical analog computing device used in the early and mid-20th century for solving differential equations.

## Why is it called DDA?

DDA stands for Digital Differential Analyzer. It is an incremental method of scan conversion of line.

**What are the advantages of DDA algorithm?**

Advantages : It is simple and easy to implement algorithm. It avoid using multiple operations which have high time complexities. It is faster than the direct use of the line equation because it does not use any floating point multiplication and it calculates points on the line.

**What is DDA algorithm with example?**

DDA Algorithm is the simplest line drawing algorithm. Given the starting and ending coordinates of a line, DDA Algorithm attempts to generate the points between the starting and ending coordinates.

### What does the differential analyzer do?

The differential analyser is a mechanical analogue computer designed to solve differential equations by integration, using wheel-and-disc mechanisms to perform the integration. Multiplication is just a special case of integration, namely integrating a constant function.

### Who created difference analyzer?

Vannevar Bush

Harold Locke Hazen

Differential analyser/Inventors

**What is circle computer graphics?**

Circle is an eight-way symmetric figure. The shape of circle is the same in all quadrants. In each quadrant, there are two octants. If the calculation of the point of one octant is done, then the other seven points can be calculated easily by using the concept of eight-way symmetry.

**Why DDA is called digital differential?**

A digital differential analyzer (DDA), also sometimes called a digital integrating computer, is a digital implementation of a differential analyzer. The integrators in a DDA are implemented as accumulators, with the numeric result converted back to a pulse rate by the overflow of the accumulator.

#### Which is better DDA vs Bresenham?

Bresenhamâ€™s algorithm is more efficient and accurate than DDA algorithm. The DDA algorithm involves floating point values while in bresenham algorithm only integer values is included. As against, bresenham involves addition and subtraction causing less consumption of time. Therefore, DDA is slower than bresenham.

#### What is the main limitation of DDA algorithm?

Disadvantages of DDA Algorithm- There is an extra overhead of using round off( ) function. Using round off( ) function increases time complexity of the algorithm. Resulted lines are not smooth because of round off( ) function. The points generated by this algorithm are not accurate.

**When PK 0 then the line is?**

Explanation: When pk < 0 line starts exceeding the boundary while if pk > 0 line is bounded inside the boundary. When the line is parallel then pk = 0.

**What is a pixel mask?**

A pixel mask is a 2D image whose pixel values are used to filter a dataset (both images and tables). Masks can be used as an alternative to classic regions shapes (circle, box, polygon, etc) or can be used in conjunction with them to create complex filters.