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Computer Programming
A category for questions about computer programming and programming languages.
10,506 Questions
Explain process control block?
The Process Control Block acts as a library of information about the processes in a system. Specific information is stored in the process control block highlighting important information about each process.
Importance of system analysis and design?
The purpose of systems analysis and design is for a business to increase their efficiency, because when you look at a current system you will see flaws that need fixed ans within the new system that you design you will take these into consideration. A new system will make the the business more profitable.
Is a website a computer program?
Software is a program, or executable file. A website on the other hand is a place were people can express their feelings (blogging), post videos, upload files, buy from stores, and much more. Software will just preform tasks like, look at your banking, keep track of taxes, play music, play videos, convert videos and audio, edit other programs, play more complex games, and much more.
How is true multi tasking achieved?
True multi-tasking is achieved through parallel processors. If you only have one processor, only one task can execute at a time. You can still multi-task by rapidly switching between all the running processes, but you cannot have two processes running simultaneously. With two or more processors running in parallel, you can.
Disadvantages of object oriented approach?
These are some of the major advantages of OOP. Simplicity: software objects model real world objects, so the complexity is reduced and the program structure is very clear. Modularity: each object forms a separate entity whose internal workings are decoupled from other parts of the system. Modifiability: it is easy to make minor changes in the data representation or the procedures in an OO program. Changes inside a class do not affect any other part of a program, since the only public interface that the external world has to a class is through the use of methods. Extensibility: adding new features or responding to changing operating environments can be solved by introducing a few new objects and modifying some existing ones. Maintainability: objects can be maintained separately, making locating and fixing problems easier. Re-usability:objects can be reused in different programs.
What is the difference multimedia and interactive multimedia?
Interactive multimedia is where you can interact with it for example a DVD menu, And the most interactive of all a game. Websites are also interactive multimedia.
Interactive multimedia is the uses of content forms that includes a combination of text, audio, still images, animation, video, and interactivity content forms sometimes called "rich media" or interactive multimedia that describes as electronic media devices used to store and experience multimedia content.
You could take that answer, or the ungeeky version... its something that's on a screen that you can control using a remote... :)
What do you need to learn about to become a computer programmer?
Lots of Math and Computer Classes.
suggested time in college: four years
Difference between computer science and information communication technology?
Both are BS degrees. In general, an computer engineering?s is a science based, very technical education path. Information technology is more management/business oriented but for jobs IT is more reffered
How do you read the dwg files?
DWG is file format for 2D and 3D design data, DWG in letters stands for "drawing". To open a DWG and view it, you need a DWG viewer. There are many DWG viewers online.
The file format is designed by Autodesk. You can download free DWG viewer from Autodesk website. Or you can check with AIGraph CAD Viewer, a lightweight but powerful viewer
Microprocessor 8085 program code for palindrome?
f 3+5+7+.........+n terms/ 5+8+11+............+10 terms =7
the value of n is
a) 35 b) 36 c) 37 d) 40
2. if A,B,C are the points z1,z2,z3 ant the angles B and C are each pie- alpha/2
then
(z2-z3)^2 = 4(z3-z1)(z1-z2) sin^2 alpha/2
He added the download to the queue.
(Line)
(waiting line)
A batch is either a sandbank or a field or patch of ground near to a stream.
A batch can also refer to a quantity of bread baked at one time, or a quantity of anything in one single operation.
There are 2 answers to this.
Hard-disk manufacturers say 1 Megabyte is 1.000.000 bytes sharp.
Memory-manufacturers calculate this different as all memorychips are multiples of 8 bits.
The Binary numbersystem is used and the closest binary number that fills all bits is:
11111111111111111111
The decimal representation of this is 1.048.575 bytes. IE One megabyte.
When counting data we use decimal numbersystem.
When counting memory we use Binary numbersystem.
This is not likely to ever change because of the way computers and memorychips work.
Regards.
A batch file is the text file that contains a series of commands that MS-DOS carries out. A batch file is created by COPY CON command after specifying a file name by using extension as .BAT in DOS mode.
What is meant by low level formatting?
Low-level formatting is the process of outlining the positions of the tracks and sectors on the hard disk, and writing the control structures that define where the tracks and sectors are. This is often called a "true" formatting operation, because it really creates the physical format that defines where the data is stored on the disk. The first time that a low-level format ("LLF") is performed on a hard disk, the disk's platters start out empty. That's the last time the platters will be empty for the life of the drive. If an LLF is done on a disk with data on it already, the data is permanently erased (save heroic data recovery measures which are sometimes possible).
If you've explored other areas of this material describing hard disks, you have learned that modern hard disks are much more precisely designed and built, and much more complicated than older disks. Older disks had the same number of sectors per track, and did not use dedicated controllers. It was necessary for the external controller to do the low-level format, and quite easy to describe the geometry of the drive to the controller so it could do the LLF. Newer disks use many complex internal structures, including zoned bit recording to put more sectors on the outer tracks than the inner ones, and embedded servo data to control the head actuator. They also transparently map out bad sectors. Due to this complexity, all modern hard disks are low-level formatted at the factory for the life of the drive. There's no way for the PC to do an LLF on a modern IDE/ATA or SCSI hard disk, and there's no reason to try to do so.
Older drives needed to be re-low-level-formatted occasionally because of the thermal expansion problems associated with using stepper motor actuators. Over time, the tracks on the platters would move relative to where the heads expected them to be, and errors would result. These could be corrected by doing a low-level format, rewriting the tracks in the new positions that the stepper motor moved the heads to. This is totally unnecessary with modern voice-coil-actuated hard disks.
More input from FAQ Farmers:
- The only time you could low level format a new voice coil hard drive if it you would have bad sector that are not being taken care by the hard disk logic. Most of the time you will have a utility to do this task that comes from the manufacturer of the drive and it will not work with any other brand. Maxtor and late quantum has a utility called Max blast plus and power max and others. They are used to diagnostic but also to fix at the low level.
- Those utilities can many times restore an unstable drive by reformatting at the low level and blocking out bad sector. Of course if the RLL (magnetic data) is low because the read write hardware is defective it will do no good. If the surface was damaged it could give the drive a new life.
- There is also an application called Spinrite (by Steve Gibson) It's not a low level format in itself but it reads and rewrites the data (at the low level) while analyzing the disk. Spinrite is over 17 years old and has been updated to the new technology ever since version 1 (current version is 6). I's a very respected software by all the hard disk service technician around the world. Steeve Gibson is one (if not the best) of the best hard disk low level white hat hacker in the world.
- No software of any sort can truly low-level format today's modern drives. The ability to low-level format hard drives was lost back in the early 1990's when disc surfaces began incorporating factory written "embedded servo data". If you have a very old drive that can truly be low-level reformatted, SpinRite v5.0 will do that for you ( But this is only possible on very old non-servo based MFM and RLL drives with capacities up to a few hundred megabytes. You can still read and write from that "so called" low level but not in the same way it was original;y possible then with old drives.
A multi-threaded application is an aplication that runs better on a dual core or quad core processor. The application splits up the tasks for example in a game it might use one core for rendering terrain, and another for sounds or 3d rendering.
How do you remove compressed old files?
Run the disk cleanup wizard. The wizard can be found from start menu Start>Programs>Accessories>System Tools>Disk Cleanup Run the wizard and select the drive u want to cleanup If there are compressed old files in ur system, they can be removed at the end of the wizard.
A pointer is a programming language data type whose value refers directly to (or "points to") another value stored elsewhere in the computer memory using its address.
Difference between pure aloha slotted aloha in networking?
1) Pure Aloha is a Continuous time system whereas Slotted Aloha is discrete time system.
2) Pure ALOHA doesn't check whether the channel is busy before transmission.
Slotted ALOHA send the data at the beginning of timeslot.
3) Pure aloha not divided in to time .Slotted aloha divided in to time
List the four steps that are necessary to run a program on a completely dedicated machine?
The first two important steps in running program on a completely dedicated machine include reserving machine time and manually loading the program into memory. The last two steps involve load starting address and beginning execution and monitoring and controlling execution of program from console.
if you are unable to search the .dll file. It may be they are in hidden file.first un-hide the all file.
open my computer > tools>folder option>view> show hidden file and folder>apply>ok
Now try to search the dll file by the search option
start>search>the the name of file. and press enter
why do you need to know what it is 1. its a dynamic loaded library all applications use this as a library of data to find information basically dll files store a bunch of info for a certain application
Where can you find .dll files on the internet to replace missing ones on your computer?Whilst some software applications strictly forbid the distribution of .dll files, some software applications (most commonly open source software) do not disallow .dll files to be distributed.
If you're looking for .dll files on the Internet to replace missing or corrupted windows .dll files, that would be against the software licensing terms Microsoft have in place. This would also go for other companies as well.
Normally, you can just search the name of the dll. So Google
