A system namely Simple Head Operated Mouse for Disabled Persons (Hand Disability) has been developed which is solely intended so as to enable the people with hand disabilities to use the computer the existing system requires a hand operated mouse and therefore, the people with inability to use their hands (i.e. people with disability, amputees, and quadriplegia patients) are deprived of accessibility to the computer the new system comprises of a Head Operated Mouse device for use with a computer that can be operated by people with disabilities the said device enables the disabled person the facility and strength to use the computer with ease similar to an able person the said system can also replace the numerous input devices to the computer viz. Trackballs, mice, joysticks, touch pads etc. the said device is compatible with any modern computer with a modern Operating System or even the older versions of operating systems.