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Computer Programming
A category for questions about computer programming and programming languages.
10,506 Questions
Why contents of a program counter change?
The PC (program counter) is a CPU memory variable, commonly called a "register," that the CPU uses to track where the current executing instruction is located in memory, or on some CPUs, where the next instruction to execute is. Without a PC, the CPU would not know where the code it is currently executing is stored, and thus would not be able to run programs.
How do you find the largest and the smallest values among 4 numbers using conditional operators?
int a, b, c, d, max, min;
scanf("%d%d%d%d",&a, &b, &c, &d);
(a>b)?(max=a,min=b):(max=b,min=a);
(c>d)?(a=c,b=d):(a=d,b=c);
max=(a>max)?a:max;
min=(b<min)?b:min;
printf("%d %d\n", max, min);
What could not be found on a political listserv?
The political listerv is made of of things like "What issues are being considered in Washington D.C" or "How to contact a representative" but things ridiculous like "Where to buy bumper stickers" or
"Where can i find peanut butter"
well, your gonna have to find a different source.
What is the so-called founding technology of HTML?
hyper text markup language
tags are instruction that are embedded directly into the text of the document.An
HTML is the language interpreted by a browser.Web page are also called HTML document. HTML is a set of special codes that can be embedded in text to add formatting and linking information.HTML is specified as tags in a HTML document.
PDF files are a common method for sending documents and books. You would have to decide for yourself whether the tax form, ebook, manual, flier, etc... was needed or not.
The 1s and 0s that a computer works with are referred to as?
Computers don't actually work with 1s and 0s; they are simply human-readable notations for the binary representations that a computer actually works with. We refer to them as binary digits or simply bits.
Inside a computer, bits are represented in a variety of ways, including high or low voltage within a capacitor, positively or negatively charged particles upon a magnetic disk or tape, long and short scores burned into an optical disk. Anything that can switch between two possible states and maintain that state (temporarily or permanently) can be used to encode binary information. We use 1s and 0s because it is the most convenient notation for binary arithmetic and logic operations, precisely mimicking the operations within the machine. We also use other notations that are more concise, including hexadecimal notation (where each hex digit represents 4 binary digits) and octal (where each octal digit represents 3 binary digits). The computer doesn't understand these notations any more than it knows the difference between a 1 and 0, but we can program it to convert all of these human notations into binary data (machine code) that it can understand. We can also program it to convert decimal notation to binary, which is convenient when we're working with real numbers such as currency, length, temperature, speed, etc.
What is text oriented approach?
Are the approaches that focus mainly on the form, the structure and the language of the text without paying any attention to the historical or social context of the writer and the text itself.
Why do you need to use bootstrap What is the advantage and disadvantage of using bootstrap?
Without a bootstrap it would be impossible to boot a computer system but that's not really an advantage, it's a fundamental aspect of any computer system.
The term "bootstrap" derives from the phrase: "to lift oneself up by one's own bootstraps". This is clearly an impossibility, not unlike standing in a carrier bag and then trying to lift the bag with you still in it; it can't be done. However, as we'll see, it is an apt phrase when it comes to initialising a computer system and provides the origin of terminology such as "boot process" and "bootup".
On any computer system, most software is loaded and executed by other software that has previously been loaded and executed. For instance, the BIOS (Basic Input/Output System) performs some essential checks upon the system hardware before loading and executing the boot loader which loads and executes a chosen (or default) operating system, at which point the user can logon and subsequently load and execute their own choice of programs.
But given that we require a program or operating system in order to load and execute other programs, this presents us with a paradox during initial bootup. How does the very first program load and execute if there is no program present to load and execute it? The answer lies in the bootstrap. The bootstrap is a machine-code program that is permanently written to a read-only memory chip (ROM). Being read-only, the bootstrap cannot be changed other than by replacing the chip itself. Unlike programs stored in RAM (Random Access Memory), ROM programs do not require power to maintain state. Thus when power is restored to the system, the bootstrap is already in memory and can be executed automatically, at which point the bootstrap takes control of the system. Typically, a bootstrap will simply locate, load and execute the system's BIOS program which takes care of the POST (Power-On Self-Test) and prepares the system to load and execute the boot loader which takes care of the bulk of the boot process until the system is ready to load and execute an operating system, at which point the system has effectively lifted itself up by its own bootstraps.
What are the drawbacks in using artificial intelligence in chess?
You could get disqualified for cheating and you will play a very computer-like game.
What are the benefits of using a function or subroutine?
Functions and subroutines enhance code organization and readability by encapsulating specific tasks, making programs easier to understand and maintain. They promote code reusability, allowing developers to use the same code multiple times without duplication. Additionally, they facilitate debugging and testing by isolating functionalities, which simplifies the process of identifying and fixing errors. Overall, these practices lead to more efficient and manageable code development.
Difference between parts and components of computer?
Computer parts are like monitor, Cpu, speakers, mouse, keyboard. Etc.. Which has physical entity.
Computer components are like a function of that particular object. Computer components are hard disk which stores permanent data, Ram which maintenance temporary data, and we have fan in cpu etc..
How old is simultaneous multithreading?
Simultaneous multithreading was first researched in 1968 as part of IBM's ACS-360 project.
Did the US Department ofDefense develop the internet?
It was originally a project from DARPA called ARPANET
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How do you compile a PLSQL procedure?
You can do that with Sql*Plus:
SQL> CREATE OR REPLACE
PROCEDURE foo ... IS
...
END foo;
/
SHOW ERRORS
Why must numeric values be assigned to variables when comparing results?
In order to compare any two values, both values must be stored somewhere otherwise it would be impossible for the machine to refer to those values let alone operate upon them. Typically we store variables in main memory, however values can also be stored directly in the machine's registers. These are known as register variables and the only practical difference between a register variable and an ordinary variable is that we cannot take the memory address of a register variable (because it has no address to take).
If we can take the address of a variable then that variable is said to have identity because it exists in memory and we can identify it solely by its address. When comparing values that have identity, we can either compare the values themselves or we can compare their identities. The latter helps us determine whether two values are the same variable or not.
The address of a variable may or may not be known at compile time. If the address is known at compile time then we can name the variable and refer to it by either its name or its address. Variables generated at runtime are anonymous and can only be referred to by their address (which we must store in another variable known as a pointer variable). Conversely, register variables must always be named, but they have no identity.
Regardless of whether a variable has a name, an identity, or both, the machine simply cannot operate upon values without using variables.
When do you make revision to existing drawing?
Whenever there is a change in the electronic components, their value (ohms, capacitance, etc) changes, or the physical layout of the device changes.
What do you call a two sided triangle?
Triangles can't have two sides, but a triangle with three congruent sides is a equilateral or three congruent angles in a triangle is equilangular.
Why do people use portable storage devices?
•A portable device, is a device that is lightweight and small so you can use at home as well as outside; for example you can use it for business travels, like you can take a laptop, a tablet or your mobile phone with you on your work journeys.
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No, it is impossible. The operating system kernel must remain in memory at all times, including the virtual memory manager, thus no single process can physically occupy every address. Indeed, all unused physical memory is allocated to the virtual memory manager. Processes are allocated addresses within the virtual address space but some of those addresses are reserved for system use only. As such, no process can ever use the entire virtual address space let alone the entire physical address space.
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