Intel describes their processors by different levels. Figure 10 illustrates a level 2 superscalar pipelined processor. A register located on the central processing unit . The contents can be used by the arithmetic-logic unit for arithmetic and logic operations, and by the memory buffer register . Usually, all results generated by the arithmetic-logic unit end up in the accumulator.
Most operations require two operands.
One of these operands usually comes from memory via the memory buffer register , while the other is the previously loaded value stored in the accumulator . The results of an arithmetic-logic unit operation is usually transfered to the accumulator . The basic components found on the central processing unit include the accumulator , arithmetic-logic unit , control unit , instruction register , memory address register , memory buffer register and the program counter . Clock Pulse A circuit which sends pulses of current to the central processing unit. Nothing happens in the computer untill a pulse is received.