Tool man

                 JOHN; SALES REPRESENTATIVE

The following technologiescan be replace djohns day to day activities.

1.PDA:

   It’s a pc you can carry with yourself in your pocket. Its in size of your palm with a stylus with it which is is useful to draw or tae a signature from the customers. The disadvantages from this device is that it has a short battery life which wont hang up for one day use. Its really expensive and also have more maintenance cost.

2.GPS:

    Gps is the most useful device to find your way to your destination. You can find where are you and where are you going. You can have them in your pocket and its light weight you can carry it anywhere. The 2 main disadavantages from this device is its battery life. It has a really short battery life and the other one is atmospheric condition. Your gps signal can be lost by even a tree or building. But mostly by weather.

3.LAPTOP:            
            Where laptops have a distinct advantage over tablets is in their flexibility. In terms of external peripherals, from printers to external hard drives, anything that connects to a desktop computer can also connect to a laptop. There's also the keyboard and optional mouse input methods, making it much easier to type for extended periods on a laptop than it is on a tablet. Laptops are typically much faster than tablets, which run only basic operating systems. But still if there is no charge you have to always carry a extra power supply.
3.SOFTWARE:
          From the link given below can help you to understand the advantage and disadvantages
         https://uk.answers.yahoo.com/question/index?qid=20120322041642AAKAszX