Question

Why the number of output ports in the peripheral-mapped i/o is restricted to 256 ports?

Answer 1

Explanation:

Although high-end tablets with full-size USB are very limited in the market, you can still get a tablet with a mini USB port. This will help you to connect your Tablet to an external keyboard, mouse, Pen Drive, Hard Drive or a game controller with the help of an OTG cable(Amazon).