Page 26 - CA 165 ver 1.0 Class 9
P. 26

Keyboard and
                                                  Audio Port  Network Port    USB Slot        Mouse Slot
                                                                     Parallel Port


                                                                                             Processor Power
                                                                                                 Control


                                                                                             SMPS Slot
                                   PCI Slot                                                  Processor



                               Graphics Slot
                              CMOS Battery
                                                                                             RAM Slot







                                                          Hard Drive  Floppy Drive
                                                             Slot         Slot
                  Typically, motherboard contains slots  for the processor, BIOS,  ROM chip, CMOS setup, mass  storage
                  interfaces, serial and parallel ports, expansion slots and all the controllers required for standard peripheral
                  devices like  monitor,  keyboard,  disc drives,  etc.  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 Alternating Current (AC) into Direct Current (DC) with
                  required voltage.

                  It also regulates the voltage to eliminate over voltage conditions
                  inside the computer. It supplies power (i.e., ±3V to ±5V) to different
                  devices inside the computer.

                  Ports
                  Ports are sockets that are used to connect external devices. Generally a desktop computer’s motherboard
                  consists of USB ports, serial port, parallel port, audio port, network port, modem port, monitor port, etc.

                  Cards

                  Cards are the devices that enable the user to configure or customize a computer to perform specific tasks
                  or to enhance its performance. For example: A TV tuner card enables the user to watch television/cable
                  TV on a computer. Such cards are attached to motherboard’s PCI (Peripherals Connecting Interface) slots.

                    MEMORY & STORAGE DEVICES

                  Memory, in context to a computer system refers to the location of storage of information. The CPU stores
                  the data in the memory/storage device that can be used or retrieved whenever required.


                   24     Touchpad Computer Applications-IX
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