Answer is the son-father-grandfather concept. Good luck
To organize your data in a list of rows and coloums. (Table, Graph)
a) Personal communication devices are used in healthcare for sending e-mails or messages to healthcare members.
b) They use these devices for calculations.
c)They can access work related medical information by using mobiles.
2) Personal communication devices use at work has positive effect on their work including reducing stress, benefiting patients care improving coordination of patient care among the healthcare team or increases unit team work.
ENIAC, in full Electronic Numerical Integrator and Computer, the first programmable general-purpose electronic digital computer, built during World War II by the United States. American physicist John Mauchly, American engineer J. Presper Eckert, Jr., and their colleagues at the Moore School of Electrical Engineering at the University of Pennsylvania led a government-funded project to build an all-electronic computer.
From Brittanica.com