Computer Hardware

It is a general term used to represent the physical and tangible components of the computer itself i.e. those components which can be seen and touched. It includes:

• Input devices
• Central processor unit
• Output devices
• Backing storage or auxiliary memory devices
• Peripherals

The electronic circuits consist of Resistors, Capacitors, and ICs etc. Inside a computer are all examples of Computer Hardware. All input and output gets connected to computer are collectively known as peripherals. Add-ons are boards containing chips and printed circuits which are inserted into slots on the main system board for the purpose of adding memory, graphics capabilities, co-processors, or other capabilities to the computer.

Relationship between Hardware and Software

• Hardware and software are mutually dependent on each other. Both of them must work together to make a computer produce a useful output.
• Software cannot be utilized without supporting hardware.
• Hardware without a set of programs to operate upon cannot be utilized and is useless.
• To get a particular job done on the computer, relevant software should be loaded into the hardware.
• Hardware is a one-time expense.
• Software development is very expensive and is a continuing expense.
• Different software applications can be loaded on a hardware to run different jobs.
• A software acts as an interface between the user and the hardware.
• If the hardware is the 'heart' of a computer system, then the software is its 'soul'. Both are complementary to each other.