Terms of Processor

Instructions
        An instruction is an simple operation that the processor can accomplish. Instructions are stored by & large memory, waiting to be processed by the processor. An instruction has fields:
1. the operation code, which represents the action that the processor must execute;
2. the operand code, which defines the parameters of the action. The operand code depends on the operation. It can be knowledge or a memory address.

Operation Code / Operand Field

           The number of bits in an instruction varies according to the type of knowledge (between one & three 8-bit bytes).
Instructions can be grouped by section, of which the main ones are:
1. Memory Access: accessing the memory or transferring knowledge between registers.
2. Arithmetic Operations: operations such as addition, subtraction, division or multiplication.
3. Logic Operations: operations such as AND, OR, NOT, EXCLUSIVE NOT, etc.
4. Control: sequence controls, conditional connections, etc.

Bus/Core ratio (clock multiplier)
         The ratio of the method bus speed & the operating (core) frequency of the processor. This information is necessary by most motherboards when setting up the BIOS for a used processor.


Processor speed
         Processor speed is the speed at which the processor executes its instructions or commands. This speed is measured in millions of cycles per second, or megahertz (MHz). Original CPUs had a speed of two.77 MHz, while systems at the time of this writing are walking around one.5 GHz. Although processor speed is not the only factor affecting performance, in general, the larger the MHz the faster the technique.

Data bus

In the world of computers, a knowledge bus is responsible for delivering knowledge from location on the PC to another (for example, from the processor to memory).