Assembly Language Questions Medium
In Assembly Language, data is represented using various data types and formats. The most common data types include integers, floating-point numbers, characters, and strings.
Integers are typically represented using binary or hexadecimal notation. Binary notation represents numbers using only 0s and 1s, while hexadecimal notation uses a base-16 system with digits ranging from 0 to 9 and A to F. For example, the decimal number 10 can be represented as 1010 in binary or A in hexadecimal.
Floating-point numbers are represented using a format called IEEE 754, which specifies the bit pattern for the sign, exponent, and mantissa of the number. This format allows for the representation of both positive and negative numbers with fractional parts.
Characters are represented using ASCII (American Standard Code for Information Interchange) or Unicode encoding. ASCII assigns a unique numeric value to each character, allowing it to be represented using a single byte. Unicode, on the other hand, supports a wider range of characters from different languages and uses multiple bytes for representation.
Strings are sequences of characters and are typically represented as arrays of bytes or words. Each character in the string is stored in consecutive memory locations, with a null character (represented by a byte with all bits set to 0) indicating the end of the string.
In Assembly Language, programmers can use various instructions and directives to manipulate and access data. These instructions include load and store instructions to move data between memory and registers, arithmetic and logical instructions to perform calculations, and control flow instructions to control the execution of the program based on conditions.