Three characteristics of an ideal encrytion scheme are:
1. The encryption sheme should be strong: the algorithm is imprevious to direct attack and attempts are derived.
2. The encryption scheme should create unique ciphertext from the same plaintext for each key permutation, among other traits.
3. It should take at least millions of years to break ideal encryption scheme, based on mathematical predictions.
To organize your data in a list of rows and coloums. (Table, Graph)
They could go flying out the window, getting seriously injured. This could also leave to death.
The working of dot matrix printer is provided in the picture.