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Computer Programming
A category for questions about computer programming and programming languages.
10,506 Questions
What is a raster scan display device with example?
The Raster scan system is a scanning technique in which the electrons sweep from top to bottom and
from left to right. The intensity is turned on or off to light and unlight the pixel.
The beam is swept back and forth from the left to the right across the
screen. When the beam is moved from the left to the right, it is ON. The beam is OFF,
when it is moved from the right to the left.
When the beam reaches the bottom of the screen, it is made OFF and rapidly
retraced back to the top left to start again. A display produced in this way is called raster
scan display.
If you try the command 'man sed' you see it is listed as one of the examples of what sed can do.
What is the difference between utility programs and application programs?
I guess you could say that application programs help you do something in the real world: Writing a letter to your mother, watching a video, making a presentation for work.
Utility programs are generally all about computer administration: They let you defragment the hard drive, move files between computers and similar small and limited computer-related tasks.
Is programming an art or an engineering discipline?
Highly likely an art than a science, most people get the misconception that you have to be good at math to be a good programmer, but it's not necessary. In fact, creativity will serve a programmer very well meaning that if you're great with languages and essays, then programming and coding should be easy for you. I did computer science once, and I highly regretted it because it was too much programming which required creativity which is something that I don't possess.
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May I suggest that engineering is creatively applied science? Computer programming requires both creativity and an ability to think very logically and follow set rules. Because following those rules leans more towards engineering than art, I'd lean towards programming being more engineering than art.
What are the Factors affecting television programming?
1Equipment 2personnel 3Training 4problem of funding 5outdated library 6poor staff remuneration 7inadequate research
Define a multiple stack. write algorithm for its implementation?
A multiple stack program is a program with more than one stack. We are talking about program defined stacks, not the implicit stack that runs behind the scenes. One algorithm would be to create a linked list. The push operation, given the address of the pointer to the head of the stack, would allocate and insert an element in front of the head. Pop would retrieve the head and deallocate it. An incomplete example, using integers as the elements... (For readability, ... indicates tabs.) typedef struct stack_element_s {
... struct stack_element_s *next;
... int element;
} stack_element; int push (stack_element **stack_head, int *value) {
... stack_element *temp;
... stack_element *new_element;
... new_element = malloc (sizeof (stack_element));
... if (new_element == null) return 0; /* allocation failure !!! -- FATAL */
... temp = *stack_head;
... new_element->next = temp;
... new_element->element = *value;
... **stack_head = new_element;
... return 1;
} int pop (stack_element **stack_head, int *value) {
... stack_element *temp;
... temp = *stack_head;
... if (temp == null) return 0; /* stack empty */
... *value = temp->element;
... **stack_head = temp->next;
... free temp;
... return 1;
} stack_element *stack1 = null;
stack_element *stack2 = null; /* showing stack1, stack2 is similar. you can have as many stacks as you want */
int value;
if (!push (&stack1, &value)) exception_handler(); /* exception handler */
if (!pop (&stack1, &value)) stack_empty(); /* stack empty */
Huffman Code is greedy when it locally (remember Greedy algorithms chooses the best solution at that time) chooses and merges two of the smallest nodes (nodes are weighted after occurrence/frequency. Those which occur most frequent has the largest values, and those with that occur least has the lowest values) at a time, until there is no more nodes left over and a binary tree is built, with left edges marked as 0's, and the right edges marked as 1's.
DBMS used in web-based application?
MYSQL - a freely distributed DBMS
Microsoft SQL Server - the product of old-brand Microsoft
Oracle - a strong and powerful DBMS, which is normally used by larger enterprises nowadays.
Which two statements describe classful IP addresses?
The number of bits used to identify the hosts is fixed by the class of the network.
Up to 24 bits can make up the host portion of a Class C address.
What are the different cryptography algorithms?
There are many different algorithms used in cryptography - RSA, DES and Rabine ciphers are a few that can be used - as well as others that are used to help determine the constants in a system like Euclid's algorithm.
Is pendrive also called a USB flash drive?
NO, becasue it's original name is flash drive or USB flash drive. As we connect flash drive to the USB port of a PC or laptop, it flash its content (files and folders) instantly. That is the reason it is called USB FLASH DRIVE.
As far as name PEN DRIVE is concern, USB Flash drive came in different shapes and one of the shape is PEN. That's why some people specially people coming from Indian region call it PEN drive. Same like they call Photocopier as Xerox machine (as well know that XEROX is the name of the company only)..
Ans:
A USB flash drive or simply flash drive is a type of removable storage medium.The flash drive comes in various shapes and sizes (both bulkyandsmall) like watches,wrist bands, ikura sushi,swiss knives etc.Some USB flash drives had shapes like pen which were very popular and thus people remember these drives as pen drives rather than USB flash drives.A pen drive is a popular name not the official name of this storage medium.
Where can you find a programming manual for a Sanyo ECR 340?
I need to find a programming manual for a Sanyo ERC 340 cash register.
How do you set up a program to start up with computer start up?
It depends on the operating system: In Windows XP, you can put it in your Documents and Settings\username\Start Menu\Programs\Startup folder In Linux, you can append it to your /etc/rc.local file
Identify connectors and components of router?
Assuming a typical, home type router.
Usually a RJ11 (phone) connector - where the phone line connects
1+ RJ45 (LAN) connector(s) - for connecting computers and other network hardware
Power connector - for the power brick
Wireless antenna(e)/antenna connector - for providing a wireless signal
some may have a USB port
most have some form of physical reset button somewhere
CPU
Memory
Flash ROM
Various ICs that perform specific functions (e.g. handling the phone line, ADCs/DACs)
Advantage of linked list over array?
The only real advantage a linked list has over an array is that it can grow much more efficiently, however this is only guaranteed when new elements are inserted at the head or the tail of the list where you have constant time access. Constant time random access is not possible, thus insertions within the body of the list may be slower than for an array because of the need to traverse to the insertion point. However an array must reallocate in order to make room for new elements which may result in the entire array being moved to new memory. This can be minimised by reserving memory in advance. But, more importantly, all elements from the insertion point must be moved forward in the array in order to make a gap for new elements. Thus inserting into an array can often be slower than for a list, particularly if the elements do not support move semantics (they must be copied instead). If you plan on performing many such insertions, then a list will probably be quicker overall because there is no need to move elements around in memory. However, if you require random access and compact storage, use an array instead and reserve as many elements as you require for your insertions.
Which algorithm is more efficient- insertion sort algorithm or merge sort algorithm?
On average merge sort is more efficient however insertion sort could potentially be faster. As a result it depends how close to reverse order the data is. If it is likely to be mostly sorted, insertion sort is faster, if not, merge sort is faster.
How can a computer execute 150 billion operations in 15 seconds?
It must be executing 10 billion operations per second, which means that its processor is running at 10 GHz, or it has multiple processors splitting the load between them.
What is the difference between line and stream editors?
A line oriented editor uses navigation and other means by line numbers. When you print a line, move to a line, or change something in a line all that is shown is the line itself, and not with the context of what is being changed.
Line oriented editors were common when screen or page based editing was not available. These days most text editors will show at least a half to full page of where you are editing so you see the change in context.
What activities can be conducted in school to incalcate moral values in children?
The real education is to create a citizen with moral values, who should always be honest, just, sacrificing, compassionate and merciful to fellow human beings and creatures. The inspiration should be Faith in a God Who is very watchful and is always beside us, who created us from single parents and we will be accountable to Him on judgment day. This answer may appear directly religious, but no education without instilling faith in God and a day when we will be accountable to God for our deeds will create a good citizen. If they can evade the law in the land, or are powerful to evade the law and want to do things whatever they like for their pleasure, nothing can stop them. We can create scientists, engineers, doctors but nothing can stop them from using their knowledge for death and destruction, exploiting others, or being unjust. We today are in such an unfortunate world twhere people who care for others are ver rare. Many innocent souls are perished at the hands of highly qualified and technically skilled man who has access to deadly devices that can destroy the whole world. http://groups.yahoo.com/group/InterfaithDialogueCenter/
Advantages of the backtracking algorithm?
Backtracking algorithmn finds minimal path among the all.The main advantage of back tracking algorithmn as compare with greedy is to find minimal distance.In greedy ,it does.t know the optimal solution.It is used in Google earth.
Why you require different operating system for different compiler?
Actually it's the other way around. You require different compilers for different operating systems. The reason for this is that an operating system is basically an intermediate step for a person to be able to interact with the hardware on their system. Each OS has a different way to do this, and so compilers must be different for each one, even for the same language.
List of people who use angles in their job?
Carpenters, Builders, Engineers, Surveyors, Architects, Mathematicians, Astronomers and in general many other people from all walks of life use angles to carry out their jobs.
Analysis of algorithm question bank?
An algorithm is a set of instructions that performs a particular task making sure that those instructions are followed. Analysis of algorithm question bank is needed when any of the following occurs: when a working program is not good enough, when program may be inefficient or when a running time of a program becomes an issue.
