Computer mother board
Motherboard service as a single platform to connect all the part of Computer together . It connects the CPU, memory, driver optical driver, video card, sound card and other ports card directly.
Features of motherboard
# It support a single type of CPU.
# Video card, hard disc ,sound cards have to be function properly in motherboard.
Popular manufacture motherboard
Intel
ASUS
A Open
ABIT
Biostar
Gigabyte
Computer memory unit
Unit and description
Kilobyte (KB) ,1 KB = 1024 byte
Megabyte (Mb), 1Mb= 1024 kb
Gigabyte (Gb), 1Gb = 1024 Mb
Terabyte (Tb), 1 Tb = 1024 Gb
Pentabyte (Pb), 1Pb=1024 Tb
Computer ports
It is physical docking paint using which an external device can be connected to the computer .
Serial ports
# It is used for external modem and older computer mouse .
# It is of two version 9 pin ,25 pin models
# The data travels at 115 KB/s in it.
Parallel ports
# It is used for scanner and printers
# It is of 25 pin models .
# PS ;2 ports used for old computer keyboard and mouse .
most of old computer provide to PS ; 2ports each for the mouse and keyboard.
USB ports ( Universal Serial bus)
It can connect all type of external USB device such as external hard disk, printer scanner mouse and keyboard. Most of the computer provide two USB ports and the data travels at 12 MB per second.
BGA port
It connect monitor to a computer
Modem port
It connect a PC modem to the telephone network.
Socket
It connect the microphone and speaker to the sound card.
Computer hardware
It represent the physical and tangible component of a computer, i.e, the component that can be run and touch .
Input device : keyboard mouse
Output device : printer , monitor
Secondary storage device : hard disk, CD or DVD ๐๐
Internal components : CPU, motherboard and RAM
Hardware and software are mutually dependent on each other both of them must work together to make a computer produce a useful output.
Software cannot be utilised without supporting hardware.
Hardware without a set of software to operate upon can not be applied and useless.
hardware is a 1 time expensive
Different software application can be loaded on a hardware to run different job .
Computer software
It is a set of program which is designed to perform a well define function .
There are two types of software :-----
System software and Application software
System software
It is the collection of programs designed to operate, control and extend the processing of the computer itself. It is generally prepared by the computer manufacturers .
E.g., the system software is compiler and interpreter
Features of system software
It Close the system.
It is fast in speed .
It is difficult to design.
It is smaller in size.
It is difficult to manipulate .
It is generally written in low level language.
Application software
It was designed to satisfy a particular environment . All software application prepared in the computer lab come under the category of application software
examples : railway reservation software, banking software , student record software, Microsoft word, Microsoft Excel ,Microsoft PowerPoint, inventory management software, payroll software.
Features of application software
It is Close to user .
It is easy to designed.
It is slow in a speed .
It is easy to manipulate.
It is generally written in high level language example PHP, Java etc.,
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