PROCESSORS The ALU and control unit of a computer are combined into a single unit called the Central Processing Unit. The CPU is truly the "brain" of the computer because it combines the circuitry that generates all the control signals needed to execute an instruction with the circuitry that actually performs the operations called by the instructions. ARITHMETIC LOGIC UNIT (ALU) Arithmetic logic unit is the part of the computer where the actual processing takes place. ALU is capable of performing arithmetic. logical and data manipulation operations on binary numbers. The circuitry that performs these operations consists of logic circuits such as adders, subtractors, comparators, etc. The ALU consists of logic circuitry that will perform operations such as addition, subtraction, multiplication, division, square roots, exponentials, data manipulations (for example, shifting), comparisons and logical operations such as AND, OR etc. on the two binary numbers containe...
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