I.C.T. revision

The words you enter to explain what the numbers mean.

The numbers you already know before you start the calculations.                                    

Electronic Mail

• you get instant feedback for what you send.
• conversations are private
• you can call people from anywhere on the planet.
• calls can be made at anytime.
• internet calls can be free.
• most people have a phone so no special equipment is needed.
• you can leave messages on answer phones.

• the line might be engaged so you cant speak to people sometimes.
• you have to pay for your calls sometimes.
• there might be noise or interfernce so your call may be interupted.
• mobiles might move out of the available range so your call might get cut off.
• you can't send files on telelphone calls.