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Floppy Disk- Alan Shugart(IBM)
Floppy disk is a type of disk storage. Even thought it had limited space for people to save the data, but the floppy disk still plays an important role for people to save data. -
Personal stereo- Andreas Pavel
The first personal stereo was invented in 1972. Personally, I think this is very important invention because people can use that to listen whenever, whatever, wherever they want. Before, people may only have chance listen to music in their home or concert, but after that people even can listen the music on the way home! -
Cellphone- Martin Cooper
Martin Cooper invented the first cell phone in the world. This invention is very important in human history. Because of the cell phone, we can talk with people when we are even not at home or company. It makes our life much easier, especially we need to talk to someone immediately. -
Digital Camera- Steven Sasson
Steven Sasson Invented the digital camera in 1975. This camera used a floppy disk to save the image, which made it had low cost. Also, it is small, so people can take it everywhere and record every moment. -
VisiCalc- Dan Bricklin and Bob Frankston
VisiCalc is the first spreadsheet in the world. We can plug in the numbers, formulas, and functions; it will compute everything for you. This is very helpful for people whose job is related to business, it can help them save a lot of time and reduce mistakes.