Everything about computer hardware and programming

1) Introduction to computers.    A computer is nothing but a device that compute numbers. So now let's talk about how this cool thing works. 2) parts of a computer and their main functions. a] CPU (Central Processing Unit) -     Do all the processing (Arithmetical and          logical operations). b] RAM (Random Access Memory) -     Stores important data that needed for     execution of any program. c] Storage devices (Hard Disk,SSD) -     Stores date like (Operating System (O.S), Software's,  images, songs, videos, etc.) d] Motherboard -     You can think it as a PCB that helps to communicate with other devices like CPU,RAM, storage devices, graphics card etc to each other. e] PSU (Power Supply Unit) -     Provides power to all components.