Computerphile

Contacting people, Before the computer….

• Writing a letter or calling

• they did not communicate

Getting information,Before the computer….

• Newspaper and books

• Gossips

• they did not receive

Buying stuffs, Before the computer……

• Go to the store for shopping

• delivered

Listening to the music Before the computer…

• Radio,various tools

• On the phone

Was it easier to store files and documents when there were no computers

• Yes

• No

LCD or LED

• Kinds of keyboards
• Kinds of monitors
• All-in-one-computer
• Back of the case

Plain text is ...

• a person who is master in cryptography.

• a set of rule to encrypt a document.

• A text that can be read by anybody.

• a secret text resulting from encryption process.

• keyboard and mouse

• keyboad and mouse

• qeyboard and mouse

• keiboard and mouse

bookshelf

• 
• 
• 
• 

• Computer

• Monitor

• laptop

• screen