these are the parts of a computer: Central Processing Unit (CPU) Memory Motherboard Power Supply Hard Disk Operating System Integrated Drive Electronics (IDE) Controller Accelerated Graphics Port (AGP) Sound Card Graphics Card Ports Real-time Clocks Complementary Metal-Oxide Semiconductor Fans, Heat Sinks and Cooling Systems
5 Types Of Computers: PC (Personal Computer) Desktops Laptops PDA's (Personal Digital Assistance) Servers
a computer is a huge machine that organizes data. a computer doesn't necsesarily have to be an electronic device, its just a something or a someone who carries out "computations".