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CPU box consists of various hardware components present inside it. The hardware inside the CPU
box are Memory and Storage Devices, Main Circuit (Motherboard), Power Controller (SMPS),
Processor, Ports, Cards etc.
Memory Unit
The three main components of the CPU are:
• Arithmetic Logic Unit (ALU): It performs all mathematical and logical
operations. Control Unit
• Control Unit (CU): It manages and directs the processor’s operations.
• Memory Unit (MU): It stores data and instructions. ALU
Info Byte
The speed of a CPU is measured in Gigahertz(GHz). The higher the value, the faster
the information is processed by the CPU.
Motherboard
The motherboard is also known as the System Board or Main Circuit
Board. It lies inside the CPU, to which all the hardware devices are
connected. Many electronic components are either attached to the
motherboard or built into it.
The motherboard contains the connectors or slots for attaching additional boards, the CPU and
memory. The chips that are attached on the motherboard are known as the ‘Motherboard Chipset’.
SMPS
Switched Mode Power Supply (SMPS) is an electric regulator component
that receives electricity from the main power supply and then supplies
appropriate power to the other components of the computer. It takes the
required amount of electricity from mains or UPS and converts the AC
current into DC current with required voltage.
It has a switching regulator which controls the output voltage. It also has an in-built fan to
reduce the heat.
Disk Drive
A disk drive is an internal hardware component of the computer system that is used to read
from and write to storage disks. Disk drives can be located internally within the CPU box or in a
separate external enclosure. Most disk drives operate in a similar manner, spinning the disk to
read and write data. The Hard Disk Drive (HDD) is the most commonly used type of disk drive.
Other types of disk drives include the Compact Disc (CD) drive, Digital Versatile Disc (DVD) drive,
and Blu-ray Disc (BD) drive.
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iPlus (Ver. 2.1)-VII

