Question

who is invented mobile,tab and laptop​

Answer 1

Adam Osborne

The laptop was invented by Adam Osborne in 1981. It was called ''Osborne 1'' and cost $1,795. It came bundled with $1,500 worth of programmes. It had a tiny computer screen built into it.

Ipad/tab is invented by Steve Jobs

Martin Cooper, Eric Tigerstedt, W. Rae Young and Donald Cox are inventors of mobile

Answer 2

Answer:

Moblie

• Motorola was the first company to produce a handheld mobile phone. On April 3, 1973, Martin Cooper, a Motorola researcher and executive, made the first mobile telephone call from handheld subscriber equipment, placing a call to Dr. Joel S. Engel of Bell Labs, his rival.
• The first handheld mobile phone was demonstrated by John F. Mitchell[2][3] and Martin Cooper of Motorola in 1973, using a handset weighing c. 2 kilograms (4.4 lbs).

Tab

• The Dynabook (1968) You could say that the idea for a tablet computer was born back in the 1960s. When Alan Kay and his colleagues at the Xerox Palo Alto Research Centre dreamt up the Dynabook, they envisaged a portable tablet-style device that would primarily serve to give children easy access to any digital media.

Laptop

• The laptop was invented by Adam Osborne in 1981. It was called ''Osborne 1'' and cost $1,795. It came bundled with $1,500 worth of programmes.
• The first "laptop-sized notebook computer" was the Epson HX-20, invented (patented) by Suwa Seikosha's Yukio Yokozawa in July 1980, introduced at the COMDEX computer show in Las Vegas by Japanese company Seiko Epson in 1981, and released in July 1982.

Explanation:

Hope it helps..... ≧ω≦