PROCESSOR
Basic Component of Processor : I. THE CONTROL UNIT Component of the processor that directs and coordinates most of the operations in the computer. It interprets each instruction issued by a program and then initiates the appropriate action to carry out the instruction. II.
THE ARITHMETIC LOGIC (ALU) Another component of the processor, performs arithmetic, comparison, and other operations. Arithmetic operations include basic operations such as addition, subtraction, multiplication and division. Comparison operations involve comparing one data item
with another to determine whether the first item is greater than, equal to, or
less than the other item. |
Option 3 : Central Processing Unit (CPU)
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20 Questions 20 Marks 25 Mins
Option 3 is the correct answer: Central Processing Unit (CPU) in a computer controls, coordinates and supervises the operations of the computer.
- Central Processing Unit (CPU) is also known as the brain of the computer.
- It is the key component that processes the data to give useful information.
- Commonly referred to as Processor it is made up of a number of micro transistors mounted on a chip.
- It consists of two basic components:
- Arithmetic and Logical Unit (ALU): This unit of CPU performs all the arithmetic and logic operations.
- Control unit: It directs the flow of data and information.
- Random Access Memory (RAM):
- It is the volatile memory of the computer where information is temporarily stored.
- The data is stored until the system is working and loses it as soon as power is switched off.
- Read-Only Memory (ROM):
- It is a non-volatile memory in which the information is stored permanently.
- The content does not get erased off even when the system is switched off.
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