top down:
You formulate the problem and solve it inroducing simple operations, for instance, you need to add 2 numbers. This is your problem which you have to solve.
You devide it in simpler problems. Remember in computer memoty first additive, then second. And then add it to each other and show result or save in another variable and show the result.Top down approach is the most popular method in programming.
bottom up:
This method is more complicated because it's not easy to formulate simple problems and end up with a global problem. In most cases bottom up is reversed to top down approach.
Hi, Top-Down programming is quite literally written from the top of a page down to the bottom, in logical order. It is a sequence that starts from very simple things and as it goes down, it gets more and more complicated. Charateristically, the things further down in the program depend on those above them. Ie. If you say "x+y", then before that you must declare firstly what x and y are (integers(1,2,3,...), charaters(a,b,c,...), etc..) and then assign them values. Bottom-Up programming is the opposite of this. You start with a result and then declare what each part is. I hope this is clear and has helped you.
Problem solving (top down) and result oriented (bottom up)
Top down can be seen as a conventional management approach - senior managers frame strategy which is implemented by subordinates.
Bottom up works the other way -ideas are solicited from those at the coal face
and they also have a key role in implementing their own suggestions.
With the top-down approach we start with the "big picture" -- the thing we are trying to solve. We outline the solution in broad, abstract, high-level terms, dividing the problem into smaller and smaller problems. With the bottom-up approach, we implement the low-level solutions which can then be combined to implement the higher-level solutions.
Integration of main module with some of the stub modules is called as Top-down approach
Top down and bottom up programming are two approaches or methodologies employed for designing structured programs in C.TOP DOWN APPROACHIn a top down approach a program(structured) is designed by using the top down methodology as follows..First the overall structure of the program is designed and it is defined and then it is followed by the designing of individual functions..BOTTOM DOWN APPROACHThe bottom down approach is just the opposite of the top down approach..ie, the program is designed by first designing the individual functions followed designing of overall program structure
It is a programming language. s of course its a programming language with bottom up approach for programming. because it follows oops concepts
what is the difference between cut- in and cut -out
their difference is very simple. surface blowdown valve is for light impurities while bottom blowdown valve is for heavy impurities such as sludge, etc.
The project is initiated by upper-level managers who issue policy, procedures and processes, dictate the goals and expect outcomes, and determine accountability for each required action.
Top down and bottom up programming are two approaches or methodologies employed for designing structured programs in C.TOP DOWN APPROACHIn a top down approach a program(structured) is designed by using the top down methodology as follows..First the overall structure of the program is designed and it is defined and then it is followed by the designing of individual functions..BOTTOM DOWN APPROACHThe bottom down approach is just the opposite of the top down approach..ie, the program is designed by first designing the individual functions followed designing of overall program structure
When you write the routine for functions and sub programs and go for the main function, it is called the bottom up approach. If you do the process in reverse it is called the top down approach..
It is a programming language. s of course its a programming language with bottom up approach for programming. because it follows oops concepts
Top-down, Bottom up Approach
Top down approach is based on Chip level flow, If the design is small then we can opt for this approach . Bottom down approach is hierarchical based chip design flow, If our Design is big, then , the chip is divided in to small manageable modules, it is similar to "Divide and Conquer approach", Finish the small manageable modules , so that the run time will be controlled, and then finally integrate in to one-chip.
bottom-up approachtop down approachinteractive approachdual approach
Agglomerative Custering: is a type of bottom-up approach ,where it deals with each point as cluster of its own then start merging them. based on minimum distance between points until achieving number of clusters required Divisive Clustering: top-down approach , where it treat all points as one big cluster then start dividing it until achieving number of clusters required
Most programmers would agree that a bottom-up approach is best.
top-down and bottom-up processing
top down/bottom up approach, plan, prepare, execute, assess
TOP DOWN APPROQACH can b explained thrugh d exampl # include<stdio.h> double min(doublex,double y); main() { } 4m d abve v cn c dat d functn 2 b used is declared abve d main ...nd it vl b defined aftr the main ... where as in bottom up approach we cn declare ths minimum functn below the main .. ths is d main difference.....
DIT is decimation in time. The input signal must already be available in bit-reversed format. This is the top-down approach where the entire time signal is split into two halve, then each half into again two more halves, etc. DIF is decimation in frequency. Input is in normal order. The output is in bit-revered order. This is a bottom-up approach.