Computer Science

Computer Hardware Computer hardware  is the physical parts or components of a computer, such as the  monitor ,  keyboard ,  computer data storage ,  graphic card ,  sound card  and  motherboard . [1]  By contrast,  software  is instructions that can be stored and ran by hardware. Hardware is directed by the  software  to execute any command or  instruction . A combination of hardware and software forms a usable  computing  system. Different systems There are a number of different types of computer system in use today. Personal computer Basic hardware components of a modern personal computer, including a  monitor , a  motherboard , a  CPU , a  RAM , two  expansion cards , a  power supply , an  optical disc drive , a  hard disk drive , a  keyboard  and a  mouse Inside a custom-built computer: power supply at the bottom has its ow...

Softwares Computer software , or simply  software , is a part of a  computer system  that consists of  data  or computer instructions, in contrast to the  physical hardware  from which the system is built. In  computer science  and  software engineering , computer software is all  information processed by  computer systems ,  programs  and data. Computer software includes  computer programs ,  libraries  and related non-executable  data , such as  online documentation  or  digital media . Computer hardware and software require each other and neither can be realistically used on its own. At the lowest level,  executable code  consists of  machine language instructions  specific to an individual  processor —typically a  central processing unit  (CPU). A machine language consists of groups of  binary values  signifying processor ins...