what is computer 

An electronic device that processes data according to instructions that are provided by computer programs. computer is a calculating device that accept data and instructions as input and use the instructons to process and transform data in to information.

HADWARE VS SOFTWARE

Hardware is any part of your computer that has a physical structure, such as the keyboard or mouse.

Software is any set of instructions that tells the hardware what to do and how to do it.  such as the web brows and games.

The basic parts without which a computer cannot work are as follows,

Processor: It executes instructions from software and hardware.

Memory: It is the primary memory for data transfer between the CPU and storage.

Motherboard: It is the part that connects all other parts or components of a computer.

Storage Device: It permanently stores the data, e.g., hard drive.

Input Device: It allows you to communicate with the computer or to input data, e.g., a keyboard.

Output Device: It enables you to see the output, e.g., monitor.

five types of computer

1.                       Micro Computer

2.                       Mini Computer

3.                       Mainframe Computer

4.                       Super Computer

5.                       Workstations