Some Generic Terms of a Computer

Processor : Processor is like the brain of the computer which organizes and carries out instructions.

In a PC, processor consists of one or more processors which are made up of silicon and other materials connected with many tiny electrical circuit. This microprocessor is connected into a circuit board which is also known as motherboard. Motherboard is a rectangular card that connects processor to other hardware.

Memory : Programs are loaded into and run from memory. Data used by program is also located into memory. The most common type of memory is RAM (Random Access Memory) which is a volatile memory i.e. it needs constant power supply. When we turn off the computer, everything in RAM will be erased. One of the factors which affects the computer speed is RAM. Computer memory is commonly described in bytes.

• 1 KB (Kilobyte) = 1024 Bytes
• 1 MB (Megabyte) = 1024 KB
• 1 GB (Gigabyte) = 1024 MB
•  1 TB (Terabyte) = 1024 GB

Input devices are the medium through which user can interact with computer i.e. feeding the input. In other words, input devices are those devices through which user inputs / gives commands to the computer. The most commonly used input device are mouse, keyboard, etc. 

Storage devices : Along with the processor, memory, input and output devices, computer also needs a place to keep programs and other stuffs. The purpose of storage device is to hold program and data files when computer is not using them. Some of the storage devices are non-volatile  whereas some are volatile. The storage devices capacity is much higher and less cheaper than the memory. Example : 1 GB RAM and 16 GB pen drive costs similar. Most commonly used storage devices are hard disk, floppy disk (rarely found nowadays), optical disks, etc.