Across
- 5. to tell people about something you want to sell
- 6. a thin piece of metal
- 7. using numbers to find out an amount
- 8. an old machine for sending messages
- 10. information about how to do something
- 12. the person in court who decides how to punish someone
- 14. an electronic switch
- 15. using numbers that hold a secret message
- 16. system the software that lets computers understand programs
Down
- 1. a group of people that control a country
- 2. a person whose job is working with numbers
- 3. a person who works with machines
- 4. computer programs
- 9. saying what you think will happen
- 11. instructions for a computer to follow
- 13. an agreement with a bank to keep your money there