information and technology

Through the ages, humans have communicated using ________beginning with simple drumbeats and smoke signals that later developed into a written language of symbols and alphabets.

• coded patterns

• emails

Drum beats and ___________________ were EARLY long-distance forms of communication.

• text messages

• smoke signals

Petroglyphs are ________

• carvings

• animals

In order to communicate more with fewer symbols, shorthand ______________ or codes were developed to speed up message transmission.

• patterns

• animals

In 1838, the telegraph was invented which used ______________________ Code to encode messages into electrical short and long buzzes over telegraph lines, and to decode as words at the other end.

• Morse

• More

• Madden

Many modern communication devices use ________________ waves

• radio

• light

A radio wave is not a sound wave, it is an ____________ wave

• micro

• light

A cell phone handset contains a __________________ for sending radio signals from the phone, and a radio receiver for receiving incoming signals from other phones.

• radio transmitter

• laser

The table provides information on coding letters of the alphabet using zeros and ones. Using the information on the table, how would one write the word CAB in 1s and 0s? (You can use your white boards to help you if you need to)

• 000001011

• 011000001