Laskentakäskyt

Laskentakäskyt are commands or instructions used in computation. They represent the fundamental operations that a computer processor can perform. These instructions can include arithmetic operations like addition, subtraction, multiplication, and division, as well as logical operations such as AND, OR, and NOT. Additionally, laskentakäskyt encompass data movement instructions, which allow for transferring data between memory locations and the processor registers, and control flow instructions that determine the order in which instructions are executed.

The set of all possible laskentakäskyt for a particular processor architecture is known as its instruction set. Different processor designs have different instruction sets. Some instruction sets are very complex, containing a large number of specialized instructions (Complex Instruction Set Computing or CISC), while others are simpler, with a smaller set of basic instructions (Reduced Instruction Set Computing or RISC).

When a program is compiled, high-level programming language code is translated into a sequence of these machine-readable laskentakäskyt. The processor then fetches, decodes, and executes these instructions one by one to carry out the program's tasks. The efficiency and design of the instruction set significantly impact a processor's performance and power consumption.