What is parity flag used for?
In computer processors the parity flag indicates if the numbers of set bits is odd or even in the binary representation of the result of the last operation. It is normally a single bit in a processor status register.
What does 8086 parity flag mean?
Parity Flag (PF) – this flag is set to 1 when there is even number of one bits in result, and to 0 when there is odd number of one bits. Even if result is a word only 8 low bits are analyzed! Auxiliary Flag (AF) – set to 1 when there is an unsigned overflow for low nibble (4 bits).
What is PSW in microcontroller?
The Program Status Word (PSW) contains status bits that reflect the current CPU state. The 8051 variants provide one special function register called PSW with this status information.
What is PF in assembly language?
PF – Parity Flag – set if low-order eight bits of result contain an even number of “1” bits; cleared.
What is difference between Boolean and flag?
Who knows what the requirements will be in the future. Returning a bool locks you in now, whereas using flags allows you greater flexibility in the future. So what if you never need more than two values in the future.
What is if flag in Java?
The if operator performs the statements inside, if and only if the condition is evaluated as true . Now, flag is equal to false . This means that negation of flag will be true ( ! false = true ).
Why flag is used in Python?
A flag in Python acts as a signal to the program to determine whether or not the program as a whole or a specific section of the program should run. In other words, you can set the flag to True and the program will run continuously until any type of event makes it False.
What is Python M for?
Python 2.4 adds the command line switch -m to allow modules to be located using the Python module namespace for execution as scripts. The motivating examples were standard library modules such as pdb and profile, and the Python 2.4 implementation is fine for this limited purpose.
What is the U in Python?
Python supports characters in different languages using the Unicode standard. The prefix ‘u’ in front of the quote indicates that a Unicode string is to be created. If you want to include special characters in the string, you can do so using the Python Unicode-Escape encoding.
What is A += in python?
The Python += operator lets you add two values together and assign the resultant value to a variable. This operator is often referred to as the addition assignment operator. It is shorter than adding two numbers together and then assigning the resulting value using both a + and an = sign separately.
Can I use Unicode in Python?
You can also use Unicode characters directly in your Python source code (e.g. print u’Россия’ in Python 2), if you are confident all your systems handle Unicode files properly.
Who invented UTF-8?
Ken Thompson
What is the full form of UTF-8?
UTF-8 is a variable-width character encoding used for electronic communication. Defined by the Unicode Standard, the name is derived from Unicode (or Universal Coded Character Set) Transformation Format – 8-bit.
Why is UTF-8 used?
Why use UTF-8? An HTML page can only be in one encoding. You cannot encode different parts of a document in different encodings. A Unicode-based encoding such as UTF-8 can support many languages and can accommodate pages and forms in any mixture of those languages.