Page 10 - TP_iPlus_V2.1_Class7
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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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